| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 536063000 | Carboxylic acid esters | 80 |
| 20080200667 | METHOD FOR PRODUCING CELLULOSE ACYLATE FILM - Cellulose with a calcium (Ca) content of at most 10 ppm is used as a raw material of cellulose acylate. The cellulose acylate is synthesized by esterification of cellulose with carboxylic acid such as acetic acid. A dope containing the cellulose acylate and a solvent is continuously cast onto a belt, which is a support, to form a casting film. The casting film is peeled off from the belt as a film, and then the film is dried. | 08-21-2008 |
| 20090111980 | MODIFICATION OF AMINES AND ALCOHOLS - A process for the modification of amines and alcohols, comprising (i) providing a substrate having amino groups or alcohol groups, wherein said substrate is, e.g., a polysaccharide; (ii) providing a modifying agent which is a lactone, an ester, a polyester, a carbonate, a polycarbonate, a lactide, a glycolide, an anhydride, an acid, a thioester or a carbamate; (iii) providing a catalyst which is, e.g., a amino acid or an organic acid; and (iv) reacting the substrate with the modifying agent in the presence of the catalyst. | 04-30-2009 |
| 20090111981 | CELLULOSE ACYLATE FILM AND ITS APPLICATIONS - A cellulose acylate film, comprising a cellulose acylate having at least one substituent (Substituent A) comprising an aromatic group having at least one C4 or longer aliphatic group, is disclosed. | 04-30-2009 |
| 20090286972 | CELLULOSE ACYLATE FILM AND METHOD FOR MANUFACTURING THE SAME - According to the present invention, a film is formed from a powdered cellulose acylate resin using a twin-screw extruder which has complete-mating-type screws and whose L/D is set in the range of 20 to 55, while setting the temperature of the resin in the extruder in the range of Tm+10° C. to Tm+70° C., keeping the average residence time of the cellulose acylate resin within 5 minutes, and drawing a vacuum so that the degree of vacuum in extruder after the powdered cellulose acylate resin has been melted is kept at 100 Torr or lower, whereby the color change or deterioration in mechanical strength of the resin can be decreased, and thus, a high-quality and high-functionality film which is good for the optical application can be provided. | 11-19-2009 |
| 20090306361 | PROCESS FOR PRODUCING CELLULOSE ESTER FILM, CELLULOSE ESTER FILM, POLARIZATION PLATE AND DISPLAY UNIT - A process for producing a cellulose ester film that is produced by a melt casting method using no solvent at film formation, and that attains reduction of bright spot foreign matter, excelling in planarity, and that attains reduction of staining, excelling in dimensional stability. It is also intended to provide such a cellulose ester film, a polarizing plate and a liquid crystal display unit. There is provided a process for producing a cellulose ester film, characterized by forming into a film a material containing a cellulose ester and an ester compound of 1 to 7.5 distribution coefficient obtained by condensation of a polyhydric alcohol and an organic acid of the general formula: (1) according to a melt casting method. | 12-10-2009 |
| 20090312537 | CARBOHYDRATES - Carbohydrates having functional groups, such as carboxylic acid groups and methods of making such carbohydrates. | 12-17-2009 |
| 20100099863 | METHOD FOR LONGITUDINALLY STRETCHING THERMOPLASTIC RESIN FILM AND LONGITUDINALLY STRETCHED FILM PRODUCED BY THE METHOD - A method according to one of the aspects of the present invention, for longitudinally stretching a thermoplastic resin film by drawing the thermoplastic resin film by a pair of rolls rotating at different circumferential velocities is characterized in that an draw initiation position is set between the pair of the rolls, and that the thermoplastic resin film is longitudinally stretched, while being heated locally and rapidly by contact-free local and rapid heating device installed at the draw initiation position along the film width direction in a range from Tg of the resin film −5° C. or higher to Tg +30° C. or lower. | 04-22-2010 |
| 20100137578 | CELLULOSE ESTER FILM FOR OPTICAL USE, AND POLARIZING PLATE AND LIQUID CRYSTAL DISPLAY USING SUCH CELLULOSE ESTER FILM FOR OPTICAL USE - Disclosed is a cellulose ester film for optical use which contains an ultraviolet absorbent and hardly suffers from retardation fluctuations. The cellulose ester film is excellent in spectral absorption property as an optical film. In addition, the cellulose ester film is free from coloration and has excellent transparency, which having sufficient ultraviolet absorption and excellent long-term light resistance. Also disclosed are a polarizing plate and liquid crystal display wherein high contrast is maintained by using such a cellulose ester film for optical use. Specifically disclosed is a cellulose ester film for optical use which is characterized by containing at least one compound represented by one of the general formulae 1-3. Also specifically disclosed are a polarizing plate and liquid crystal display using such a cellulose ester film for optical use. | 06-03-2010 |
| 20100228019 | Production Process of Glucan Derivative Modified with Cyclic Ester - A process for producing a glucan derivative modified with a cyclic ester with a highly suppressed homopolymerization of a cyclic ester is provided. | 09-09-2010 |
| 20120123112 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 05-17-2012 |
| 20130217873 | METHOD FOR THE PREPARATION OF A PARTICULATE REVERSIBLY CROSSLINKED POLYMERIC MATERIAL - The present invention relates to method for the preparation of a particulate reversibly-crosslinked polymeric material comprising: treating a particulate water-soluble hydroxyl-functional polymer in a liquid phase comprising a solvent mixture in that the hydroxyl-functional polymer is insoluble containing an organic solvent and water; a tetracarboxylic acid dianhydride represented by formula (I), 10 (I) wherein: U and V are independently selected from CH, N and P; 15 X is selected from a single bond, a saturated divalent (C | 08-22-2013 |
| 20130345415 | Methods for biocompatible derivitization of cellulosic surfaces - The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired. | 12-26-2013 |
| 20140296507 | Polymer Hydrogels and Methods of Preparation Thereof - The invention relates to a method for the preparation of a polymer hydrogel, comprising cross-linking a precursor comprising a hydrophilic polymer optionally in combination with a second hydrophilic polymer, using a polycarboxylic acid as the cross-linking agent. The invention further concerns the polymer hydrogel obtainable by the method of the invention and the use thereof in a number of different applications. | 10-02-2014 |
| 20150119568 | HETEROGENEOUS THIOL-ENE CLICK MODIFICATIONS OF SOLID POLYSACCHARIDE-BASED MATERIALS - This invention concerns the first environmentally benign heterogeneous modification of polysaccharide-based material in native solid state by thiol-ene “click chemistry”. The direct reaction of a thiol with an un-activated double or triple bond by thiol-ene and thiol-enyne click modification is thermally or photochemically catalyzed and is completely metal-free and allows for a highly modular approach to modifications of fibers and fiber-based materials. | 04-30-2015 |
| 20150148531 | METHOD FOR THE MANUFACTURE OF CARBONYL DERIVATIVES OF POLYSACCHARIDES - The invention relates to a method for the manufacture of carbonyl derivatives of polysaccharides and to the oxidization of polysaccharides in the presence of nitrogen dioxide to yield carbonyl derivatives of polysaccharides. The products including carbonyl derivatives of polysaccharides, obtained by the method are also described. | 05-28-2015 |
| 20150148532 | Methods for Biodegradable Derivatization of Cellulosic Surfaces - The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired. | 05-28-2015 |
| 20150291707 | DEPOLYMERISATION OF POLYSACCHARIDES AND RELATED PRODUCTS - Procedure for depolymerising polysaccharides using UV-vis light irradiation catalyzed by a radical photoinitiator. The polysaccharides obtained with the procedure of the invention have a average number molecular weight comprised between 5,000 and 500,000 and when dissolved in water give solutions with high concentrations and low viscosity. | 10-15-2015 |
| 20150368364 | Methods for Biodegradable Derivatization of Cellulosic Surfaces - The present invention describes methods of treating cellulosic materials with a composition that provides increased hydrophobicity to such materials without sacrificing the biodegradability thereof. The methods as disclosed provide for esterification of available hydroxyl groups on cellulosic materials, where such hydroxyl groups are “masked” by bulky organic chains, including that the disclosure provides products made by such methods. The materials thus treated display higher hydrophobicity, barrier function, and mechanical properties, and may be used in any application where such features are desired. | 12-24-2015 |
| 20160158383 | METHOD AND DEVICE FOR MANUFACTURING POLYMER PARTICLES CONTAINING A THERAPEUTIC MATERIAL - Methods and devices for manufacturing polymer particles containing a therapeutic material and polymer conjugate particles comprising (a) introducing a first stream comprising a first solvent into a channel, wherein the channel has a first region adapted for flowing one or more streams introduced into the channel and a second region for mixing the contents of the one or more streams; (b) introducing a second stream comprising polymer conjugate in a second solvent into the channel to provide first and second streams flowing in the channel; (c) flowing the one or more first streams and the one or more second streams from the first region of the channel into the second region of the channel; (d) mixing of the contents of the one or more first streams and the one or more second streams flowing in the second region of the channel to provide a third stream comprising polymer conjugate nanoparticles. | 06-09-2016 |
| 536064000 | Mixed carboxylate esters | 23 |
| 20120095207 | CELLULOSE ESTERS AND THEIR PRODUCTION IN CARBOXYLATED IONIC LIQUIDS - Ionic liquids and cellulose ester compositions and processes and apparatus for producing ionic liquids and cellulose esters. Cellulose esters can be produced by dissolving cellulose in carboxylated ionic liquids and thereafter contacting the cellulose solution with at least one acylating reagent. Cellulose esters produced via the present invention can comprise ester groups that originate from the carboxylated ionic liquid and/or the acylating reagent. | 04-19-2012 |
| 20120330002 | HETEROGENEOUS THIOL-ENE CLICK MODIFICATIONS OF SOLID POLYSACCHARIDE-BASED MATERIALS - This invention concerns the first environmentally benign heterogeneous modification of polysaccharide-based material in native solid state by thiol-ene “click chemistry”. The direct reaction of a thiol with an un-activated double or triple bond by thiol-ene and thiol-enyne click modification is thermally or photochemically catalyzed and is completely metal-free and allows for a highly modular approach to modifications of fibers and fiber-based materials. | 12-27-2012 |
| 20160200836 | METHOD FOR PRODUCING CELLULOSE DERIVATIVE, AND CELLULOSE DERIVATIVE | 07-14-2016 |
| 20160251452 | PROCESS FOR PRODUCING CELLULOSE DERIVATIVE AND CELLULOSE DERIVATIVE | 09-01-2016 |
| 20160376379 | POLYSACCHARIDE DERIVATIVES AND CROSS-METATHESIS PROCESSES FOR PREPARING THEM - Methods for the cross-metathesis of polysaccharides with one or more olefin-terminated side chains and cross-metathesized products are described. In an exemplary embodiment, a method for the synthesis of cellulose ω-carboxyesters via olefin cross-metathesis with acrylates is described. Conditions of the reactions were relatively mild and the olefin-substituted polysaccharides and the appropriate acrylate partners appear to follow Grubbs rules as summarized herein. Additionally, a method of hydrogenation of the cross-metathesized product is described. The compounds and methods may be useful for waterborne coating applications, adhesives, lubricants, or any product in need of dispersion in an aqueous media. | 12-29-2016 |
| 536065000 | Propionate, butyrate or isobutyrate containing | 18 |
| 20090054638 | Cellulose Ester Compositions Having Low Bifringence and Films Made Therefrom - The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. Therefore, these films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation. | 02-26-2009 |
| 20100093996 | CELLULOSE ESTER COMPOSITIONS HAVING LOW BIFRINGENCE AND FILMS MADE THEREFROM - The present invention relates to cellulose esters having low hydroxyl content for use in optical applications, such as liquid crystal display (LCD) films. Films made with low hydroxyl levels and a given ratio of non-acetyl ester to hydroxyl level have been found to have low intrinsic birefringence. These films can be cast, molded, or otherwise oriented without an appreciable birefringence or optical distortion (i.e. retardation). Such features make these films useful in polarizer, protective, and compensator films as well as molded optical parts, such as lenses. Furthermore, it has also been found that resins of the present invention can also be made to have “+C plate” behavior either by melt or solvent based processing, a characteristic which is not typical of cellulose esters. Such +C behavior allows films to be produced having unique compensatory behavior. Other embodiments of the invention relate to methods melt casting films while minimizing birefringence formation. | 04-15-2010 |
| 20110098464 | CELLULOSE INTERPOLYMERS AND METHODS OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 04-28-2011 |
| 20110213138 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 09-01-2011 |
| 20120101269 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A CARBOXYLATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 04-26-2012 |
| 20120165517 | CELLULOSE DERIVATIVE, THERMO-MOLDING MATERIAL, MOLDED BODY AND METHOD FOR PREPARATION THEREOF, AND CASE FOR ELECTRIC AND ELECTRONIC DEVICES - A thermo-molding material contains a water-insoluble cellulose derivative, wherein the water-insoluble cellulose derivative comprises: A) a hydrocarbon group; B) a group containing an acyl group: —CO—R | 06-28-2012 |
| 20120197011 | ESTERS OF CELLULOSIC MATERIALS AND DIACIDS AND METHOD OF MAKING THEREOF - The present invention relates to esters of diacids and cellulosic materials and methods for making thereof. The ester has the chemical composition of Formula (I) Formula I where R1, R2, and R3 can be the same or different, and each of which is selected from —H, —COR′, —R′″, or —COR″ COOH, with the proviso that at least one of the R1, R2, or R3 is —COR″ COOH; R′ is an alkyl, alkenyl, alkynyl, or aromatic group; R″ is an alkyl, alkenyl, or alkynyl group having 4 or more carbon atoms (≧C | 08-02-2012 |
| 20120202984 | TREATMENT OF CELLULOSE ESTERS - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by esterifying cellulose in a reaction medium comprising one or more ionic liquids. Cellulose esters prepared via the methods of the present invention can be contacted with at least one bleaching agent to produce bleached cellulose esters having a ΔE value of less than 30. | 08-09-2012 |
| 20120238741 | PRODUCTION OF CELLULOSE ESTERS IN THE PRESENCE OF A COSOLVENT - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium. | 09-20-2012 |
| 20120238742 | PRODUCTION OF CELLULOSE ESTERS IN THE PRESENCE OF A COSOLVENT - Ionic liquids and cellulose ester compositions and processes for producing ionic liquids and cellulose esters. Cellulose esters can be produced by subjecting a cellulose-ionic liquid solution comprising cellulose, one or more ionic liquids, and one or more co-solvents to esterification to thereby produce an esterified medium comprising a cellulose ester. The co-solvents employed in the present invention can be either miscible or immiscible with the cellulose-ionic liquid solution but can be readily dispersed or soluble in the esterified medium. | 09-20-2012 |
| 20120264930 | Cellulose Ester Optical Films - Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology. | 10-18-2012 |
| 20130116425 | CELLULOSE INTERPOLYMERS AND METHOD OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 05-09-2013 |
| 20130116426 | CELLULOSE INTERPOLYMERS AND METHOD OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 05-09-2013 |
| 20130116427 | CELLULOSE INTERPOLYMERS AND METHOD OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 05-09-2013 |
| 20130190485 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 07-25-2013 |
| 20130253182 | POLYMER FILM, AND OPTICALLY-COMPENSATORY FILM, POLARIZER AND LIQUID-CRYSTAL DISPLAY DEVICE COMPRISING THE SAME - A polymer film that has an in-plane retardation Re | 09-26-2013 |
| 20140343271 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A TETRAALKYLAMMONIUM ALKYLPHOSPHATE IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate and processes to produce the cellulose solution. Another aspect of this invention relates to shaped articles prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising derivatives of cellulose prepared from a cellulose solution comprising at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising regioselectively substituted cellulose esters prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. In another embodiment of the invention, the cellulose esters of the present invention are used as protective and compensation films for liquid crystalline displays. | 11-20-2014 |
| 20160108137 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A HALOGENATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 04-21-2016 |
| 536066000 | Ether-esters | 3 |
| 20120296078 | ACETYLATED CELLULOSE ETHER AND ARTICLES COMPRISING THE SAME - Acetylated cellulose ether and an article including the same. The acetylated cellulose ether has a degree of substitution (DS) of alkyl group of 1 to 2, a molar substitution (MS) of hydroxyalkyl group of 0 to 1, and a degree of substitution (DS) of acetyl group of 1 to 2. | 11-22-2012 |
| 20130245248 | ACETYLATED CELLULOSE ETHER AND ARTICLES INCLUDING SAME - Provided are acetylated cellulose ether and an article including the same. The acetylated cellulose ether has a molecular weight of about 1,000 to about 1,000,000 Daltons, a contact angle of about 20 to about 45 degrees (°), and a tensile strength of about 50 to about 100 MPa. | 09-19-2013 |
| 20140343272 | PREPARATION METHOD OF ACETYLATED CELLULOSE ETHER, AND ACETYLATED CELLULOSE ETHER PREPARED THEREBY - Disclosed are a method of preparing acetylated cellulose ether, and acetylated cellulose ether prepared thereby. Here, the disclosed method of preparing the acetylated cellulose ether includes dissolving acetylated cellulose ether in an organic solvent to obtain a mixture comprising a solution of the acetylated cellulose ether; removing an insoluble component that is insoluble in the organic solvent from the mixture; and adding the mixture to water to precipitate the acetylated cellulose ether. The acetylated cellulose ether prepared thereby has a turbidity of less than 40 formazin turbidity units (FTU). | 11-20-2014 |
| 536068000 | Propionates, butyrates or isobutyrates | 8 |
| 20090062524 | METHOD FOR BREAKING DOWN CELLULOSE IN SOLUTION - The present invention describes a process for the degradation of cellulose by dissolving the cellulose in an ionic liquid and treating it with an acid, if appropriate with addition of water. | 03-05-2009 |
| 20100022764 | METHOD AND APPARATUS FOR PRODUCING CELLULOSE ACYLATE FILM, AND CELLULOSE ACYLATE FILM - According to the present invention, the adaptability to producing the cellulose acylate film and the surface properties of the cellulose acylate film produced by means of the melt film-forming method can be remarkably improved. Accordingly, there is also improved the surface properties of a stretched cellulose acylate film produced by stretching such an unstretched cellulose acylate film. | 01-28-2010 |
| 20100029927 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS PRODUCED IN A CARBOXYLATED IONIC LIQUID PROCESS AND PRODUCTS PRODUCED THEREFROM - This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays. | 02-04-2010 |
| 20110046365 | CELLULOSE DERIVATIVES, METHOD OF PRODUCING THE SAME AND USE THEREOF - A transglycosylation product, a method of producing the same and use of the product. The transglycosylation product comprises an alkyl or hydroxyalkyl glycoside of a cellulose ester or ether, wherein the alkyl or hydroxyalkyl groups of the glycoside residue comprise a carbon chain having 1 to 4 carbon atoms, and having 0 to 2 free hydroxyl groups and being attached to the 1-carbon of the anhydroglucose unit via an oxy group. The product can be produced by mixing the cellulose derivative with mono-, di- or triol to form a reaction mixture, after which the reaction mixture is heated and the reaction is continued until a clear mixture is obtained. After cooling the recoverable product is suitable for use for example as an adhesive or as a hydrophobic coating. | 02-24-2011 |
| 20120142910 | CELLULOSE ESTERS AND THEIR PRODUCTION IN CARBOXYLATED IONIC LIQUIDS - Ionic liquids and cellulose ester compositions and processes and apparatus for producing ionic liquids and cellulose esters. Cellulose esters can be produced by dissolving cellulose in carboxylated ionic liquids and thereafter contacting the cellulose solution with at least one acylating reagent. Cellulose esters produced via the present invention can comprise ester groups that originate from the carboxylated ionic liquid and/or the acylating reagent. | 06-07-2012 |
| 20130178614 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS AND EFFICIENT METHODS OF PREPARING THEM - Embodiments of the invention provide regioselectively substituted carbohydrate and polysaccharide derivatives, such as cellulose esters, and methods for preparing them. Particular methods of the invention include deacylation of esters using tetrabutylammonium fluoride to obtain selective substitution at desired hydroxyl position(s) of the ester. Preferred is deacylation of an ester, which shows selectivity for removal of acyl groups from the ester of the secondary alcohols at C-2 and C-3, and which affords cellulose-6-O-esters with high regioselectivity by a simple one-step process employing no protective groups. Inventive regioselectively substituted cellulose esters can be prepared by such methods to obtain esters with the following anhydroglucose repeating units: | 07-11-2013 |
| 20130203982 | CELLULOSE INTERPOLYMERS AND METHOD OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 08-08-2013 |
| 20140024825 | ESTER COMPOUND OF CELLULOSE DERIVATIVE AND MANUFACTURING METHOD OF SAME - A manufacturing method for an esterification product of a cellulose derivative by comprising esterification of a cellulose derivative in a mixture of an ionic liquid, cellulose derivative and agent that is at least one selected from the group consisting of carboxylic anhydride, carboxylic acid halide, and carboxylic acid. | 01-23-2014 |
| 536069000 | Acetates | 27 |
| 20090036667 | CELLULOSE ACYLATE FILM AND METHOD FOR PRODUCING SAME, POLARIZING PLATE, RETARDATION FILM, OPTICAL COMPENSATORY FILM, ANTI-REFLECTION FILM, AND LIQUID CRYSTAL DISPLAY DEVICE - A cellulose acylate film is stretched in the longitudinal direction by 1-300% under such conditions that the ration of the stretching distance (L) to the width (W) of the film before stretching, i.e., length/width ratio (L/W), is higher than 0.01 and lower than 0.3. The film stretched is relaxed in the longitudinal direction by 1-50% to produce a cellulose acylate film. When this film is incorporated in a liquid-crystal display, it can prevent the occurrence of color unevenness even when used in an high-temperature high-humidity atmosphere. | 02-05-2009 |
| 20090062525 | METHOD OF ADJUSTING THE DEGREE OF SUBSTITUTION WITH ACETYL GROUP OF CELLULOSE ACETATE - A process for adjusting an intermolecular or intramolecular degree of acetyl substitution of cellulose acetate is disclosed. The process comprises ripening cellulose acetate in the presence of a catalyst, an acetyl donor, and water or an alcohol. The amount of water and the alcohol is in the range of 0.1 to 10 mol % based on the amount of the acetyl donor. | 03-05-2009 |
| 20090082557 | CELLULOSE ACYLATE FILM AND ITS APPLICATIONS - A novel cellulose acylate film is disclosed. The film is formed of a composition comprising at least one cellulose acylate having an aromatic group-containing acyl group (Substituent A), in which a substitution degree with Substituent A satisfies following relational expressions (I) and (II): | 03-26-2009 |
| 20100222567 | STRETCHED CELLULOSE ACYLATE FILM AND PROCESS FOR PRODUCING THE SAME - One embodiment of the present invention provides a method for producing a stretched cellulose acylate film with an in-plane retardation, Re, of 100 nm or more and a relationship between the thickness direction retardation, Rth, and Re which satisfies Rth<(Re/2), by longitudinally stretching an unstretched cellulose acylate film in a longitudinal direction by pulling by means of a difference in circumferential velocity between a pair of rollers, wherein the method is characterized in that the cellulose acylate film is subjected to free-end uniaxial stretching to a longitudinal stretch ratio of 1 to 2 while the film is being heated in a heating oven installed between the pair of rollers at a stretching temperature in the range of Tc−10° C. to Tc+70° C., Tc being the crystallization temperature of the film, and with the temperature difference in the film width direction maintained within 10° C. | 09-02-2010 |
| 20110009610 | Process For The Acetylation Of Lignocelluloses, Hemicelluloses, and Celluloses With Ketene - The invention relates to a process for acetylating celluloses, lignocelluloses and hemicelluloses such as wood, straw and cotton, and regenerated celluloses produced from natural products, by means of ketene. | 01-13-2011 |
| 20110166340 | Process for adjusting degree of acetyl substitution of cellulose acetate - A process for adjusting an intermolecular or intramolecular degree of acetyl substitution of cellulose acetate is disclosed. The process comprises ripening cellulose acetate in the presence of a catalyst, an acetyl donor, and water or an alcohol. The amount of water and the alcohol is in the range of 0.1 to 10 mol % based on the amount of the acetyl donor. | 07-07-2011 |
| 20120172585 | CELLULOSE DIACETATE FOR RETARDATION FILM - To provide a cellulose acetate which gives a cellulose acetate optical film exhibiting optical properties as a result of stretching, in which the film shows excellent stretchability and gives a stretched film having excellent optical properties. | 07-05-2012 |
| 20130324710 | PROCESS FOR THE DERIVATIZATION OF CELLULOSE - There is disclosed a process for the derivatization of cellulose comprising the sequential steps: a) mixing cellulose with a viscosity below 900 ml/g with an aqueous solution to obtain a liquid, wherein particles comprising cellulose in said liquid have a diameter of maximum 200 nm, wherein the temperature of the aqueous solution is below 20° C., and wherein the pH of the aqueous solution is above 12, b) subjecting the liquid to at least one of the steps: i) decreasing the pH of the liquid with at least 1 pH unit, ii) increasing the temperature by at least 20° C., and c) derivatization of the cellulose. Advantages include that there is provided the possibility to derivatize cellulose faster and to a greater extent after the treatment. Further the yield is improved. The product quality is improved and the manufacture is cheaper and easier. | 12-05-2013 |
| 20140018530 | CELLULOSE RESIN AND PROCESS FOR PRODUCING THE SAME - A cellulose resin produced by binding a hydrogenated cardanol containing 3-pentadecylcyclohexanol, and cellulose or a derivative thereof through the reaction between a hydroxy group of the hydrogenated cardanol, a hydroxy group of the cellulose or a derivative thereof and isocyanate groups of a diisocyanate compound. | 01-16-2014 |
| 20140073776 | CELLULOSE NANOFIBERS AND METHOD FOR PRODUCING SAME, COMPOSITE RESIN COMPOSITION, AND MOLDED BODY - Cellulose nanofibers have an average degree of polymerization of 600 or more to 30000 or less, an aspect ratio of 20 or more to 10000 or less, an average diameter of 1 nm or more to 800 nm or less, and an Iβ-type crystal peak in an X-ray diffraction pattern, in which a hydroxyl group in the cellulose nanofibers is esterified and has a modification degree of 1.0 or more based on all of the hydroxyl groups. | 03-13-2014 |
| 20140323714 | METHOD AND A SYSTEM FOR MANUFACTURING CELLULOSE MATERIAL - The invention relates to a method for manufacturing cellulose material, the method comprising introducing cellulose fibers as raw material pulp ( | 10-30-2014 |
| 20160122440 | MODIFIED WOOD FIBRES FOR MANUFACTURE IN COMPOSITES - A method for the acylation of lignocellulose by exposing the lignocellulose to an acylation agent in a closed vessel. | 05-05-2016 |
| 20160376380 | PHARMACEUTICAL COMPOSITIONS WITH ENHANCED PERFORMANCE AND IMPROVED PROCESSABILITY - The presently disclosed and claimed inventive concept(s) relates to a polymer for enhancing drug performance and improving processability. Specifically, the polymer comprises hydroxypropyl methyl cellulose acetate succinate (HPMC-AS). On the HPMC-AS, the percentage of total succinoyl degree of substitution is less than 12% at C6-OH position and greater than 53% at C3-OH, and the percentage of total acetyl degree of substitution is greater than 32% at C6-OH position. | 12-29-2016 |
| 20220135706 | CELLULOSE ACETATE FILM AND METHOD FOR PRODUCING CELLULOSE ACETATE FILM - An object of the present disclosure is to provide a cellulose acetate film having excellent bending properties and high transparency. The subject cellulose acetate film contains cellulose acetate having a cellulose triacetate I crystal structure, the cellulose acetate film having a light transmittance of 70% or higher at 660 nm. | 05-05-2022 |
| 536070000 | With pretreatment process | 3 |
| 20150141639 | PROCESS FOR PRODUCING CELLULOSE DERIVATIVE AND CELLULOSE DERIVATIVE - A process for producing a cellulose derivative, including reacting a reactant and a cellulose or a derivative thereof in a solid-liquid heterogeneous system to form a cellulose derivative containing a long-chain organic group having 5 or more carbon atoms introduced therein, in a swollen state, and performing solid-liquid separation to obtain the cellulose derivative containing a long-chain organic group introduced therein. | 05-21-2015 |
| 536071000 | Acetic acid utilized in pretreatment | 1 |
| 20160200835 | METHOD FOR PRODUCING POROUS CELLULOSE PARTICLES, AND POROUS CELLULOSE PARTICLES | 07-14-2016 |
| 536075000 | Halogen containing compound utilized in process | 1 |
| 20130131333 | CELLULOSE INTERPOLYMERS AND METHOD OF OXIDATION - This invention provides cellulose ester interpolymers, and methods of oxidizing cellulose interpolymers and cellulose ester interpolymers. The invention also provides routes to access carboxylated cellulose ester derivatives with high acid numbers wherein the carboxyl group is attached directly to the cellulose backbone by a carbon-carbon bond. Through functionalization of an intermediate aldehyde, the corresponding cationic or zwitterionic cellulose ester derivatives can also be accessed. The interpolymers of the present invention have a number of end-use applications, for example, as binder resins in various types of coating compositions and as drug delivery agents. | 05-23-2013 |
| 536076000 | Subsequent treatment process | 6 |
| 20090171079 | 6-POSITION HIGHLY ACETYLATED CELLULOSE DIACETATE AND PROCESS FOR PRODUCING THE SAME - Disclosed is a cellulose diacetate comprising a 6-position highly acetylated cellulose diacetate having a 6-percent viscosity of 40 to 600 mPa·s, and having a total degree of acetyl substitution of DSt and a degree of acetyl substitution at the 6-position of DS6, wherein DSt and DS6 satisfy following Conditions (1) and (2): | 07-02-2009 |
| 20130096296 | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst - Instilling an acidic catalyst to a reaction mixture can be beneficial during the acylation of cellulose. Methods described herein can comprise preparing a reaction mixture comprising an acylating agent and cellulose, instilling a catalyst comprising an acid to the reaction mixture, and reacting the cellulose with the acylating agent in the presence of the catalyst, thereby forming an acylated cellulose. | 04-18-2013 |
| 20130096297 | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst - Instilling an acidic catalyst to a reaction mixture can be beneficial during the acylation of cellulose. Methods described herein can comprise preparing a reaction mixture comprising an acylating agent and cellulose, instilling a catalyst comprising an acid to the reaction mixture at an overall catalyst loading level of about 1% or less by weight of the cellulose, and reacting the cellulose with the acylating agent in the presence of the catalyst, thereby forming an acylated cellulose. | 04-18-2013 |
| 20130096298 | Methods for Synthesizing Acylated Cellulose Through Instillation of an Acidic Catalyst - Instilling an acidic catalyst to a reaction mixture can be beneficial during the acylation of cellulose. Methods described herein can comprise preparing a reaction mixture comprising an acylating agent and cellulose, instilling a catalyst comprising an acid to the reaction mixture at an overall catalyst loading level of about 10% to about 20% by weight of the cellulose, and reacting the cellulose with the acylating agent in the presence of the catalyst, thereby forming an acylated cellulose. | 04-18-2013 |
| 20160032020 | CELLULOSE ACETATE WITH A LOW DEGREE OF SUBSTITUTION - A cellulose acetate according to the present invention has a total degree of acetyl substitution of 0.4 to 1.1 and has a compositional distribution index (CDI) of 3.0 or less, where the CDI is specified by the formula: | 02-04-2016 |
| 536082000 | Halogen containing compound utilized in process | 1 |
| 20150038695 | REGIOSELECTIVELY SUBSTITUTED CELLULOSE ESTERS AND EFFICIENT METHODS OF PREPARING THEM - Embodiments of the invention provide regioselectively substituted carbohydrate and polysaccharide derivatives, such as cellulose esters, and methods for preparing them. Particular methods of the invention include deacylation of esters using tetrabutylammonium fluoride to obtain selective substitution at desired hydroxyl position(s) of the ester. Preferred is deacylation of an ester, which shows selectivity for removal of acyl groups from the ester of the secondary alcohols at C-2 and C-3, and which affords cellulose-6-O-esters with high regioselectivity by a simple one-step process employing no protective groups. Inventive regioselectively substituted cellulose esters can be prepared by such methods to obtain esters with the following anhydroglucose repeating units: | 02-05-2015 |
| 536083000 | Halogen containing compound utilized in process | 4 |
| 20090012283 | Cellulose Acylate Film and Method for Producing Same, and Retardation Film, Polarizer and Liquid Crystal Display Device Comprising the Film - A cellulose acylate film satisfying Re≧40 is produced by transporting a cellulose acylate film having a substitution degree of acyl substituted for hydroxyl group of cellulose of 2.88 or higher, and subjecting the film to heat treatment at 160° C. or higher. | 01-08-2009 |
| 20130046089 | ACETYLATION OF CELLULOSE IN DENSIFIED GAS - Cellulose acetates and processes for producing same. The process involves esterifying a cellulose containing material in the presence of a densified gas such as supercritical carbon dioxide to form a cellulose acetate product having a degree of substitution less than 3. The cellulose acetate preferably is sulfate-free. | 02-21-2013 |
| 20140275516 | NATURALLY DERIVED MIXED CELLULOSE ESTERS AND METHODS RELATING THERETO - Mixed cellulose esters derived from natural products (e.g., natural cellulose esters) may be produced by methods that include acylating a cellulose with a natural esterification reactant or a derivative thereof to yield a natural cellulose ester. In some instances, the natural esterification reactant derivative may be a saponified natural esterification reactant. In some instances, the natural cellulose esters may have a glass transition temperature of about −55° C. to about 170° C. | 09-18-2014 |
| 20150073135 | CELLULOSE RESIN AND METHOD FOR PRODUCING THE SAME - A cellulose resin produced by binding cardanol or a derivative thereof to cellulose or a derivative thereof with the use of a cellulose hydroxy group of the cellulose or a derivative thereof and the phenolic hydroxy group of the cardanol or a derivative thereof. | 03-12-2015 |
