| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 526213000 | Material contains carboxylic acid, salt, ester, or anhydride thereof | 39 |
| 20090023876 | Crosslink Agents and Dual Radical Cure Polymer - Crosslink agents used to copolymerize at least one hydrophilic monomer with at least one lens monomer typically used to prepare polymeric materials for ophthalmic lenses. The crosslink agents have a relatively high selectivity for the hydrophilic monomer and limited reactivity with the crosslink agent used to polymerize the lens monomer. Accordingly, the invention is also directed to a hydrophilic crosslinked polymer that comprises at least two monomeric units and at least two different crosslink units. The use of the dual crosslink system provides an improved means to control the final chemical, physical and structural characteristics of the resulting polymer. | 01-22-2009 |
| 20090270572 | Oxymethylene Copolymers and the Use Thereof and Process for the Preparation of Oxymethylene Copolymers - Oxymethylene copolymers having a high proportion of terminal alkyl ether groups and having terminal hydroxyalkylene groups are described. These polymers are distinguished by high thermal stability and high hot water resistance. | 10-29-2009 |
| 20090318649 | Styrene-Maleic Anhydride Copolymers for Bioapplications and Their Preparation - The present invention discloses styrene-maleic anhydride copolymers preparations using solventless techniques. The solventless method resulted in reduced amounts of residues, such as unreacted styrene and/or maleic anhydride monomers, which makes the copolymers particularly suitable for bioapplications. | 12-24-2009 |
| 20100168354 | Low Gloss Thermoplastic Resin Having Excellent Heat Resistance and Impact Strength and Method of Preparing the Same - A thermoplastic resin of the present invention is prepared by copolymerizing conjugated diene rubber (A), rubbery aromatic copolymer (B), heat resistant aromatic vinyl compound (C), aromatic vinyl compound (D), unsaturated nitrile compound (E) and cross linking agent (F) and can have excellent heat resistance, impact strength, and low gloss. | 07-01-2010 |
| 20100174040 | PROCESS FOR PREPARING ACRYLATE COPOLYMERS - The present invention relates to a method of producing polymers by free-radical polymerization in solution, wherein the polymerization initiator used is an ethanol-soluble initiator, and the solution polymerization is carried out in an alcoholic solvent which comprises 5 to 50% by weight of water. | 07-08-2010 |
| 20100197874 | Random Propylene Copolymer Compositions, Articles and Process - The present disclosure is directed to random propylene/α-olefin compositions, articles, and processes for producing the same. The present compositions contain a random copolymer of propylene and α-olefin. Polymerization with an improved catalyst composition increases the molecular weight distribution of the copolymer and increases the randomness of comonomer distribution to yield random propylene/α-olefin copolymers with improved stiffness and/or improved optical properties. | 08-05-2010 |
| 20100240850 | IODINATED ORGANIC SUBSTANCES OF LOW MOLECULAR MASS AND PROCESS FOR PREPARING THEM - Process for preparing one or more iodinated organic substances having a molecular mass of less than 2000 (substances (S)) using (A) at least one free-radical-generating substance chosen from peroxides, diazo compounds, dialkyldiphenylalkanes, substances derived from tetraphenylethane, boranes and iniferter substances comprising at least one thiuram disulphide group, (B) an ethylenically unsaturated substance capable of adding a free radical to its ethylenic double bond, (C) molecular iodine, which comprises the steps according to which at least a fraction of (A), at least a fraction of (B) and at least a fraction of (C) are introduced into a reactor, and then the contents of the reactor are caused to react, while introducing therein the possible remainder of (A), the possible remainder of (B) and the possible remainder of (C), until a moment is reached when the content of the reactor is a mixture comprising one or more substances (S). Iodinated organic substances for whose preparation the abovementioned process is particularly well suited. | 09-23-2010 |
| 20100273966 | Procatalyst Composition with Adamantane and Method - Disclosed are procatalyst compositions having an internal electron donor which includes an adamantanedicarboxylate and optionally an electron donor component. Ziegler-Natta catalyst compositions containing the present procatalyst compositions produce propylene-based olefins with broad molecular weight distribution. | 10-28-2010 |
| 20110112265 | CURABLE COMPOSITION AND MOLDED ARTICLE MADE OF SAME - A curable composition comprising (A) a vinylidene fluoride type elastomer which is a copolymer of vinylidene fluoride (a1), at least one perfluoroolefin (a2) selected from the group consisting of tetrafluoroethylene, hexafluoropropylene and perfluoro(alkyl vinyl ether) and a cyano group-containing monomer (a3) (the proportion of vinylidene fluoride exceeds 20% by mole), and (B) a compound generating ammonia at 40° to 330° C. alone as a curing agent. The present invention can provide a curable composition of a vinylidene fluoride type elastomer assuring improved crosslinking speed and making it possible to use a cheap curing agent, and a molded article obtained from the curable composition. Physical properties under normal conditions can also be improved by the presence of the solvent having affinity for the compound generating ammonia. | 05-12-2011 |
| 20120157645 | Procatalyst Composition with Alkoxypropyl Ester Internal Electron Donor and Polymer From Same - Disclosed herein are catalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present catalyst compositions include an internal electron donor with an alkoxypropyl ester. The present catalyst compositions improve catalyst selectivity. Propylene-based polymer produced from the present catalyst composition has a melt flow rate greater than 4 g/10 min. | 06-21-2012 |
| 20130053525 | Production of Substituted Phenylene Dibenzoate Internal Electron Donor and Procatalyst with Same - The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization. | 02-28-2013 |
| 20150344597 | PRODUCTION OF SUBSTITUTED PHENYLENE DIBENZOATE INTERNAL ELECTRON DONOR AND PROCATALYST WITH SAME - The present disclosure is directed to the production of substituted phenylene aromatic diesters and 5-tert-butyl-3-methyl-1,2-phenylene dibenzoate (or “BMPD”) in particular. The processes disclosed herein produce a liquid BMPD product. The liquid BMPD product unexpectedly creates production efficiencies by reducing the number of production steps, reducing the amount and/or number of reagents required for BMPD production. The liquid BMPD product may also be utilized in procatalyst production yielding similar production efficiencies. The procatalyst composition is subsequently used for olefin polymerization. | 12-03-2015 |
| 20160046740 | COMBINED INTERNAL DONOR SYSTEM FOR ZIEGLER-NATTA POLYOLEFIN CATALYSTS AND METHODS OF MAKING AND USING SAME - Solid catalyst components are disclosed including titanium, magnesium, halogen and an internal electron donor compound having a combination of internal electron donor compounds including at least one 1,8-naphthyl diester and at least one secondary internal donor compound selected from alkyl 2-alkoxy-1-naphthoates, alkyl 2-alkoxybenzoates, alkyl 2,6-dialkoxybenzoates, (2-alkoxyphenyl)(pyrrolidin-1-yl)alkanones, dialkyl phthalates, alkyl alkionates, and dialkyl cyclohexane-1,2-dicarboxylates, and catalyst systems containing the catalyst solid components, organoaluminum compounds, and organosilicon compounds. Further, methods of making the catalyst components and the catalyst systems are disclosed as well as methods of polymerizing or copolymerizing alpha-olefins using the catalyst systems. | 02-18-2016 |
| 526214000 | Derived from carboxylic acid containing at least one atom of halogen or sulfur | 12 |
| 20080200627 | METHOD FOR PRODUCING MELT-PROCESSABLE FLUORORESIN - To provide a method for producing a melt-processable fluororesin, which is capable of increasing the molecular weight of the fluororesin and preventing coloration of the fluororesin, by using a specific fluorinated emulsifier other than ammonium perfluorooctanoate. | 08-21-2008 |
| 20080207859 | FLUORORESIN HAVING LOW RESIDUAL AMOUNT OF FLUORINATED EMULSIFIER AND PROCESS FOR ITS PRODUCTION - To provide a fluororesin which does not substantially contain perfluorooctanoic acid or its salt, and which has a low residual amount of a fluorinated emulsifier. | 08-28-2008 |
| 20100317815 | PROCESS FOR MANUFACTURING FLUOROELASTOMER - A fluoroelastomer is produced by the polymerization reaction of a fluorinated olefin using a ωH perfluorocarboxylic acid represented by the general formula: H(CF | 12-16-2010 |
| 20110082272 | METHOD FOR PURIFYING FLUORINATED COMPOUND - To provide a method for purifying a fluorinated carboxylic acid having an etheric oxygen atom and its derivative, with small decomposition and inclusion of impurities. | 04-07-2011 |
| 20120157646 | METHOD FOR PRODUCING FLUORINE-CONTAINING POLYMER - An object of the present invention is to provide a method for producing a fluoropolymer which produces a large number of particles with a small particle size using a specific non-fluorous compound having surfactant ability. The method for producing a fluoropolymer includes aqueous dispersion polymerization of a monomer including at least one fluoroolefin in the presence of a compound represented by the formula: CH | 06-21-2012 |
| 20120259083 | TRITHIOCARBONATE DERIVATIVES AND THE USE THEREOF IN THE FORM OF TRANSFER AGENTS FOR ACRYLIC ACID CONTROLLED RADICAL POLYMERISATION - The invention relates to novel sulphur compounds, to the production thereof by a method carried out in an aqueous medium and the use thereof in the form of transfer agents in a method for controlled radical polymerisation of acrylic acid and/or acrylic acid with water-soluble monomers in water. The thus obtained polymers are usable in the form of dispersing agents or grinding aid agents and/or aid agents for combined grinding of mineral materials in an aqueous suspension and in the form of dispersing agents directly incorporated into aqueous formulations containing mineral materials. | 10-11-2012 |
| 20120322964 | Halogenated Amide Ester and Internal Electron Donor with Same - Disclosed are halogenated amide esters that are suitable as internal electron donors in procatalyst compositions. Ziegler-Natta catalyst compositions containing the present procatalyst compositions exhibit improved catalyst activity and/or improved catalyst selectivity and produce propylene-based olefins with broad molecular weight distribution. | 12-20-2012 |
| 20130225776 | NOVEL HETEROCYCLIC AROMATIC COMPOUND AND POLYMER - An electrically conductive polymer obtained by oxidative polymerization of a heterocycle-containing aromatic compound as a monomer, wherein the heterocycle-containing aromatic compound is represented by the formula: A-B. In the above formula, A represents a substituted or unsubstituted thiophene ring group, or a substituted or unsubstituted pyrrole ring group; B represents a substituted or unsubstituted hydrocarbon aromatic ring group, a substituted or unsubstituted thiophene ring group, or a substituted or unsubstituted pyrrole ring group; the ring represented by A and the ring represented by B are directly linked; however, A and B represent structures that are different from each other. The compound can be produced by a coupling reaction using a hypervalent iodine reactant. | 08-29-2013 |
| 20140094578 | POLYMERIZABLE COMPOSITIONS - A polymerizable composition that comprises a first component comprising a (meth)acrylate and an organic peroxide as an oxidizing agent and a second component comprising a (meth)acrylate and a cysteine as a reducing agent which has a partial structure represented by the following structural formula, the first component and/or the second component further comprising a polymerization promoter: | 04-03-2014 |
| 20140179887 | SYNTHESIS OF 2,3,3,3-TETRAFLUOROPROPENE/VINYLIDENE FLUORIDE COPOLYMERS - In accordance with the present invention, aqueous emulsion polymerization processes of synthesizing 2,3,3,3-tetrafluoropropene/vinylidene fluoride copolymers having 2,3,3,3-tetrafluoropropene as the major monomer unit are provided. | 06-26-2014 |
| 20140187728 | PROCESS FOR PRODUCING FLUORINATED OLEFIN/VINYL ALCOHOL COPOLYMER AND FILM MADE BY FORMING A COMPOSITION CONTAINING THE COPOLYMER - To provide a process for producing a fluorinated olefin/vinyl alcohol copolymer having a high molecular weight which can be formed into a strong film with high productivity. | 07-03-2014 |
| 20140235807 | Use of Mercapto-Methyl Esters as Chain Transfer Agents - Disclosed herein is a chain transfer agent in a free-radical emulsion polymerization process, of at least one mercapto-methyl ester, and also relates to the free-radical emulsion (co)polymerization process comprising at least one such mercapto-methyl ester and uses thereof. Also disclosed herein are mercapto-methyl diesters. | 08-21-2014 |
| 526215000 | Derived from carboxylic acid containing at least one atom of nitrogen | 7 |
| 20110054132 | SYNTHETIC MYCOTOXIN ADSORBENTS AND METHODS OF MAKING AND UTILIZING THE SAME - The present invention relates generally to molecularly imprinted polymers (MIPs). In particular, the present invention relates to reusable, ecologically friendly MIPs that can be produced in relatively large quantities, methods of producing the same, and methods of utilizing the same (e.g., to sequester and/or adsorb target compounds (e.g., mycotoxins)). Compositions and methods of the invention find use in a variety of applications including dietary therapeutic, prophylactic, food and beverage processing and manufacture, as well as research, quality control and traceability applications. | 03-03-2011 |
| 20120059136 | METHOD FOR PRODUCING HIGHLY BRANCHED POLYMER - A method for producing a highly branched polymer, with which a molecular weight can be controlled without using a polymerization inhibitor and a polymer having a controlled molecular weight can be produced safely even in a case of mass production in an industrial scale. A method for producing a highly branched polymer including polymerizing a monomer A having two or more radical polymerizable double bonds in a molecule, in the presence of a polymerization initiator B in an amount of 5% by mol to 200% by mol with respect to 1 mol of the monomer A at a temperature 20° C. higher than a 10-hour half-life temperature of the polymerization initiator B or higher. | 03-08-2012 |
| 20120123072 | NOVEL MULTIFUNCTIONAL AZO INITIATORS FOR FREE RADICAL POLYMERIZATIONS: METHODS OF PREPARATION - The invention provides compositions of matter, methods of their synthesis, and methods of their use in polymerization reactions. The compositions include polyfunctional initiators used to make star polymers when polymerized with monomers. The polyfunctional initiators are synthesized out of a multifunctional core with at least two functional groups and two or more initiator units bonded to the functional groups. The initiator units have two electron-withdrawing groups bonded to a central carbon atom and an azo group between the central carbon atom and the functional group. The polyfunctional initiators are particularly effective because when they decompose to form the radical core of a star polymer, the electron-withdrawing groups prevent the corresponding radical from forming any linear polymer contamination and only desired star polymers result. | 05-17-2012 |
| 20120271020 | METHOD FOR PRODUCING COPOLYMER FOR SEMICONDUCTOR LITHOGRAPHY CONTAINING REDUCED AMOUNT OF METAL IMPURITIES, AND METHOD FOR PURIFYING POLYMERIZATION INITIATOR FOR PRODUCTION OF COPOLYMER - A method for producing a copolymer for semiconductor lithography containing less metal impurities, and a method for purifying a polymerization initiator for production of the copolymer, are provided. The method for purifying a polymerization initiator to be used for production of a polymer includes a filtering step wherein a solution of a polymerization initiator dissolved in an organic solvent is allowed to pass through a filter having a nominal pore size of not more than 1.0 μm, to reduce the sodium content of the polymerization initiator solution to not more than 300 ppb with respect to the weight of the polymerization initiator. Further, the method for producing a copolymer for semiconductor lithography includes a polymerization step wherein the polymer for semiconductor lithography is synthesized by a radical polymerization reaction in the presence of a polymerization initiator purified by the above purification method. | 10-25-2012 |
| 20130123446 | METHOD FOR PRODUCING RESIST COPOLYMER HAVING LOW MOLECULAR WEIGHT - A method for producing a resist copolymer having a weight-average molecular weight of not less than 3000 and not more than 6000, in which copolymer the contents of an oligomer having a molecular weight of not more than 1000 and a byproduct derived from a polymerization initiator are small, is provided. | 05-16-2013 |
| 20140031507 | METHOD FOR PRODUCING WATER-ABSORBING RESIN - The invention provides a novel method for producing a water-absorbent resin comprising: subjecting at least one water-soluble ethylenic unsaturated monomer to reversed-phase suspension polymerization in a petroleum hydrocarbon dispersion medium, the reversed-phase suspension polymerization being conducted using a 0.00005 to 0.00016 mol of water-soluble azo initiator for radical polymerization per mol of the water-soluble ethylenic unsaturated monomer in the presence of 0.000015 to 0.00015 mol of hypophosphorous compound per mol of the water-soluble ethylenic unsaturated monomer. | 01-30-2014 |
| 20160115261 | CATALYST COMPONENTS FOR THE POLYMERIZATION OF OLEFINS - A solid catalyst component for the polymerization of olefins comprising Mg, Ti, Cl and at least an electron donor compound which is the reaction product obtained by bringing into contact a Mg compound and a Ti compound having at least a Ti-halogen bond with an electron donor selected from specific diphenol derivatives. | 04-28-2016 |
| 526216000 | Derived from aliphatic acid | 7 |
| 20080300373 | Method of Purifying (Meth) Acrylates - The invention relates to a process for purifying (meth)acrylates. | 12-04-2008 |
| 20090203864 | ULTRA-HIGH MOLECULAR WEIGHT POLY(VINYLIDENE FLUORIDE) - The invention relates to a polyvinylidene fluoride polymer having an ultra-high molecular weight, and unexpected physical properties. The ultra-high molecular weight polymer is clear, has a lower melting point, reduced crystallinity, excellent impact resistance, and a high elongation at the yield point. The ultra-high molecular weight polyvinylidene fluoride can be alone, or blended with other polymers, in final applications and articles. | 08-13-2009 |
| 20110077370 | CONTINUITY ADDITIVES AND THEIR USE IN POLYMERIZATION PROCESSES - The invention relates to catalyst compositions including at least one catalyst compound and at least one continuity additive such as poly-oxo-metal carboxylate compound and their use in the polymerization of olefins. | 03-31-2011 |
| 20110144292 | POLYMERIZABLE COMPOSITION, CROSSLINKABLE RESIN, AND MANUFACTURE METHODS AND APPLICATIONS THEREOF - A polymerizable composition suitable as an electric material and the like used in an electric circuit board, which comprises a norbornene monomer, a metathesis polymerization catalyst, and a chain transfer agent composed of a compound represented by formula (A): | 06-16-2011 |
| 20130289231 | Catalyst Composition with Alkoxyalkyl Ester Internal Electron Donor and Polymer from Same - Disclosed herein are catalyst compositions and polymers, i.e., propylene-based polymers, produced therefrom. The present catalyst compositions include an internal electron donor with a compounded alkoxyalkyl ester and optionally a mixed external electron donor. The present catalyst compositions improve catalyst selectivity, improve catalyst activity, and/or improve hydrogen response. Propylene-based polymer produced from the present catalyst composition has a melt flow rate greater than 10 g/10 min. | 10-31-2013 |
| 20140316090 | METHOD FOR PRODUCING METHACRYLIC RESIN FOR OPTICAL FILM - The present invention can provide a methacrylic resin which has excellent transparency and color and less defects such as fish eyes and thus suitable for optical films by adding (A) a polymeric dispersant represented by formula (1) below and (B) an inorganic salt and/or organic salt selected from alkali metal salts, alkaline earth metal salts and ammonium salts when methyl methacrylate alone or a monomer mixture containing methyl methacrylate as one component is subjected to suspension-polymerization: | 10-23-2014 |
| 20140357821 | LOW-TEMPERATURE-RESISTANT FLUORINE-CONTAINING ELASTOMER AND PREPARATION METHOD THEREFOR - The present invention provides a low-temperature-resistant fluorine-containing elastomer formed through polymerization of the comonomers: 40-80 mol % 1,1-vinylidene fluoride, 2-10 mol % tetrafluoroethylene, 10-30 mol % perfluoro(alkyl vinyl ether), and 1-10 mol % vulcanization monomer. The present invention further provides a preparation method of the fluorine-containing elastomer. In the present invention, on basis of a large number of experiments, the contents of the comonomers of the fluorine-containing elastomer are adjusted, so that the low temperature performance thereof is significantly improved, and the low-temperature retraction temperature TR-10<−40. Moreover, the rate of the volume change of the fluorine-containing elastomer in methanol decreases, and the oil resistance and the solvent resistance are improved, thereby improving the oil resistant performance and solvent resistant performance of the fluorine-containing elastomer. | 12-04-2014 |
