Class / Patent application number | Description | Number of patent applications / Date published |
528370000 | FROM REACTANT HAVING A HALOGEN ATOM OR OXYGEN SINGLE BONDED TO A CARBONYL GROUP, E.G., HALO-C(=O)-, -O-C(=O)-O, ETC. | 51 |
20080255336 | PROCESS FOR THE PREPARATION OF DIARYL CARBONATE - Diaryl carbonate is prepared by reaction of an aromatic alcohol with a dialkyl carbonate, which dialkyl carbonate has been prepared by the reaction of an alkanol and an alkylene carbonate. | 10-16-2008 |
20090270586 | PLANT-DERIVED COMPONENT-CONTAINING POLYCARBONATES AND PROCESS FOR THEIR PRODUCTION - The object of the invention is to provide plant-derived component-containing polycarbonates with improved color tone, and a process for their production. | 10-29-2009 |
20090299029 | SOLUBLE POLYTHIOPHENE DERIVATIVES - The present invention discloses a soluble polythiophene derivative containing highly coplanar repeating units. The coplanar characteristic of the TPT (thiophene-phenylene-thiophene) units improves the degree of intramolecular conjugation and intermolecular π-π interaction. The polythiophene derivative exhibits good carrier mobility and is suitable for use in optoelectronic devices such as organic thin film transistors (OTFTs), organic light-emitting diodes (OLEDs), and organic solar cells (OSCs). | 12-03-2009 |
20100076172 | Method of manufacturing a molded article - A method of manufacturing a molded article having excellent color and transparency and made from a polycarbonate resin. | 03-25-2010 |
20100190953 | POLYCARBONATE COPOLYMER AND METHOD OF PRODUCING THE SAME - The object is to provide a polycarbonate copolymer having excellent mechanical strength, good heat resistance, a low refractive index, a large Abbe number, a low berefringence and excellent transparency and containing a plant-derived raw material. Disclosed is a polycarbonate copolymer which comprises a constituent unit derived from a dihydroxy compound represented by the general formula (1) and a constituent unit derived from an alicyclic dihydroxy compound and has an Abbe number of 50 or greater and “a 5% heating weight loss temperature” (a temperature at which the 5% weight loss under heating is observed) of 340° C. or higher. Also disclosed is a process for producing the polycarbonate copolymer by reacting a dihydroxy compound represented by the general formula (1) and an alicyclic dihydroxy compound with a carbonate diester in the presence of a polymerization catalyst. | 07-29-2010 |
20100204436 | PROCESS FOR PREPARING POLY(TRIMETHYLENE ETHER) GLYCOL AND COPOLYMERS THEREOF - Processes for preparing relatively high molecular weight poly(trimethylene ether)glycol employing a cocatalyst system are provided. | 08-12-2010 |
20110065894 | METHODS OF CONTROLLING MOLECULAR WEIGHT DISTRIBUTION OF POLYMERS AND COMPOSITIONS THEREOF - A catalyst, co-catalyst, and/or chain transfer agent is added at a time after initiation of an addition polymerization reaction to produce a polymer product with a widened molecular weight distribution relative to having all of the components in the original reaction mixture. The catalyst, co-catalyst, or chain transfer agent may be added discretely or continuously to the reaction to produce a product with a bimodal, trimodal, or other broadened molecular weight distribution. | 03-17-2011 |
20110092664 | Monomers Issued from Renewable Resources and Process for Polymerising Them - This invention relates to the synthesis of polycarbonates prepared from carbonate monomers derived from the biomass in the presence of a system comprising an organometallic transfer agent and alcohol. It also relates to the polymers resulting from these cyclic compounds. | 04-21-2011 |
20110190471 | POLYCARBONATE DIOL AND POLYCARBONATE DIOL COPOLYMER - The invention provides a polycarbonate diol and a polycarbonate diol copolymer each having excellent mechanical performance, hydrolysis resistance, etc. and exhibiting excellent industrial productivity. The polycarbonate diol includes a repeating unit represented by formula (1), and the polycarbonate diol copolymer includes a repeating unit represented by formula (1) and a repeating unit represented by formula (3): | 08-04-2011 |
20120041169 | METHOD FOR PREPARING A DIALKYL CARBONATE OF DIANHYDROHEXITOL - A method for preparing dialkyl carbonates of dianhydrohexitol, includes the following steps: (a) preparing an initial reaction mixture containing at least one dianhydrohexitol, at least two mole equivalents of a dialkyl carbonate of formula and a transesterification catalyst; (b) heating the reaction mixture to a temperature greater than or equal to the boiling temperature of the formed alcohol, or of the azeotrope thereof, in a reaction chamber preferably provided with a rectification column including a sufficient number of theoretical distillation plates to separate the resulting alcohol from the reaction mixture. Certain dialkyl carbonates of dianhydrohexitols produced by the method and the use thereof for synthesizing synthetic polymers are also described. | 02-16-2012 |
20120108786 | ORGANIC SYSTEM FOR THE RING-OPENING POLYMERIZATION OF CYCLIC CARBONATES IN ORDER TO OBTAIN (BIO)-POLYCARBONATES - An organocatalytic system, having a sulfonic acid as catalyst, for the polymerization of carbonates, and a polymerization process employing said system to obtain bio-polycarbonates devoid of ether units inserted by decarboxylation. The catalyst system for the ring-opening polymerization reaction of cyclic carbonates is formed of an initiator and, as catalyst, of a sulfonic acid of formula R′—SO | 05-03-2012 |
20120172573 | Aromatic Carbonate, Method of Preparing the Same, and Polycarbonate Prepared Using the Same - A method of preparing aromatic carbonate from dialkyl carbonate includes reacting an aromatic hydroxyl compound and dialkyl carbonate in the presence of at least one type of samarium-containing catalyst represented by Formula 1, Formula 2, or a combination thereof: | 07-05-2012 |
20130231455 | STRETCHED FILM AND METHOD FOR PRODUCING THE SAME - The present invention aims at providing a method for producing a stretched film, the method achieving suppression of wrinkles formed on the stretched film and limitation of biaxiality of the stretched film within a desired range and being carried out with simple facilities and providing a stretched film having optical properties suitably usable as a retardation plate. | 09-05-2013 |
20130261283 | COPOLYCARBONATE - The present invention provides a copolycarbonate that has a low photoelastic constant and has fewer foamed cells and that is in particular suitable for use in optical fields. | 10-03-2013 |
20130296526 | PRODUCTION METHOD OF POLYCARBONATE - A method for producing a polycarbonate, comprises: continuously feeding a dihydroxy compound having a portion represented by —(—CH | 11-07-2013 |
20130303724 | POLYCARBONATE POLYOL COMPOSITIONS - The present invention provides polycarbonate polyol compositions with improved characteristics. Such polycarbonate polyol compositions are useful in thermosetting applications for the production of coatings for consumer products. The present invention provides compositions having such improved characteristics, in particular, polycarbonate polyol compositions having a glass transition temperature (Tg) from about −20° C. to about 60° C., from about −20° C. to about 50° C., or from about 0° C. to about 30° C., are particularl useful in thermosetting applications. In some embodiments, polycarbonate polyol compositions have a Tg from about −20° C. to about 3° C. In some embodiments, polycarbonate polyol compositions have a Tg from about 0° C. to about 50° C., from about 0° C. to about 50° C., or from about 10 “C. to about 40° C. | 11-14-2013 |
20140031513 | PRODUCTION METHOD OF POLYCARBONATE, AND POLYCARBONATE PELLET - The present invention relates to a method for producing a polycarbonate having excellent characteristics such as hue and mechanical properties with a stable quality and a high yield by solving a plurality of problems as those described above in producing a polycarbonate by using a specific dihydroxy compound exhibiting low thermal stability as compared with bisphenols and having a —CH | 01-30-2014 |
20140179894 | PROCESS FOR PREPARING BRANCHED POLYETHERCARBONATES AND USE THEREOF - The present invention relates to a process for preparing branched polyethers and/or polyether-like structures, to these branched polyethers themselves, and to their use. | 06-26-2014 |
20140249290 | METHODS FOR ENHANCING FLAME RETARDANCE OF MOLDED POLYMERIC MATERIALS - Disclosed are methods for manufacturing molded polymeric articles exhibiting enhanced flame retardant properties. Also disclosed are molded thermoplastic articles manufactured by the disclosed processes and methods. | 09-04-2014 |
20140275473 | PROCESS FOR PURIFICATION OF DIPHENYL CARBONATE FOR THE MANUFACTURING OF HIGH QUALITY POLYCARBONATE - A process for purifying a diaryl carbonate, comprises introducing an aqueous stream to a diaryl carbonate stream that comprises a metal contaminant, wherein the aqueous stream reacts with the metal contaminant to form a precipitate; wherein introducing the aqueous stream to the diaryl carbonate stream results in introducing 100 to 10,000 ppm water based on the total composition of the diaryl carbonate stream and the aqueous stream; removing the precipitate via one or both of a separation column and a filter to result in a purified diaryl carbonate. | 09-18-2014 |
20140357833 | HIGHLY FUNCTIONAL, HYPERBRANCHED POLYCARBONATES AND PRODUCTION AND USE THEREOF - Hyperbranched polycarbonates having stabilizing groups, prepared by reaction of
| 12-04-2014 |
20150025217 | YIELD OPTIMIZATION OF POLYCARBONATE POLYOLS - Embodiments of the invention provide for methods of producing a polycarbonate polyol. The method includes charging a vessel with butanediol, charging the vessel with a polymerization catalyst, and adding to the vessel dimethyl carbonate at a rate of at least 2.0 g of DMC per minute per kg of BDO to produce polycarbonate polyol at a polycarbonate polyol yield of at least 80% of a theoretical yield. | 01-22-2015 |
20150087804 | COPOLYCARBONATE - A copolycarbonate having a low water absorption coefficient and excellent heat resistance, low temperature characteristics and surface hardness. | 03-26-2015 |
20150299390 | Polymers of [4-(methylether)-1,3-dioxolane-2-one of polyether polyol] - The invention relates to a polymer of formula (I): | 10-22-2015 |
20150322203 | PROCESS FOR PREPARING HIGHLY POLYMERIZED AROMATIC POLYCARBONATE RESIN - The present invention provides a process for preparing a highly polymerized aromatic polycarbonate resin which not only has excellent quality such that it has high molecular weight and high fluidity, but also has more excellent heat resistance. The process of the present invention comprises a highly polymerizing step for reacting an aromatic polycarbonate prepolymer with an aliphatic diol compound of the following formula (I) having hydroxymethyl groups (HO—CH | 11-12-2015 |
20150375463 | MOLDING APPARATUS, MOLDED ARTICLES, AND METHODS OF MOLDING - A mold assembly having a reversibly pressurized inner membrane disposed within the molding cavity is used to mold thermoplastic or thermoset articles. The use of the pressurized inner membrane enables the molding to be carried out below the melt temperature of a thermoplastic in some embodiments. The mold assembly and methods of molding enable the formation of molded articles, including complex articles, with improved properties compared to articles formed using conventional apparatuses and methods. | 12-31-2015 |
20160075823 | POLYCARBONATE MOLDED ARTICLE - A molded article such as a resin window or a lamp lens for vehicles which is formed from a polycarbonate and excellent in heat resistance, weather resistance, low water absorption, surface hardness and low-temperature impact properties. | 03-17-2016 |
20160194440 | POLYCARBONATE RESIN USABLE AS OIL-ADSORBING MATERIAL | 07-07-2016 |
528371000 | Polymerizing in the presence of a specified material other than a reactant | 17 |
20110257362 | POLYCARBONATE COPOLYMER AND METHOD OF PRODUCING THE SAME - The problem to be solved by the present invention is to provide a polycarbonate copolymer containing a plant-derived raw material, which is excellent in the mechanical strength and heat-resistant and assured of small refractive index, large Abbe number, small birefringence and excellent transparency. The present invention provides a polycarbonate copolymer containing a constitutional unit derived from a dihydroxy compound represented by the following formula (1) and a constitutional unit derived from an alicyclic dihydroxy compound, wherein the Abbe number is 50 or more and the 5% thermal reduction temperature is 340° C. or more; and a method of producing this polycarbonate copolymer by reacting a dihydroxy compound represented by the following formula (1) and an alicyclic hydroxy compound with a carbonic acid diester in the presence of a polymerization catalyst. | 10-20-2011 |
20120172574 | Ring Opening Polymerisation of Cyclic Carbonates With Organic Catalyst Systems - The present invention discloses a method for polymerising cyclic carbonates by immortal ring-opening polymerisation in the presence of organocatalysts and alcohol, said alcohol acting as initiator and as transfer agent. | 07-05-2012 |
20120232243 | POLYCARBONATE RESINS AND PROCESSES FOR PRODUCING THE SAME - The invention is to provide polycarbonate resins having excellent light resistance, transparency, hue, heat resistance, thermal stability, and mechanical strength and to provide processes for efficiently and stably producing a polycarbonate resin which stably shows those performances. The invention includes: polycarbonate resins which at least contain structural units derived from a dihydroxy compound having the portion represented by the following general formula (1) as part of the structure thereof and which have specific properties; and processes for producing the polycarbonate resins. | 09-13-2012 |
20130237683 | Monomers Issued From Renewable Resources and Process for Polymerising Them - This invention relates to the synthesis of polycarbonates prepared from carbonate monomers derived from the biomass in the presence of a system comprising an organometallic transfer agent and alcohol. It also relates to the polymers resulting from these cyclic compounds. | 09-12-2013 |
20140018517 | METHOD FOR PRODUCING POLYCARBONATE POLYOLS BY THE IMMORTAL POLYMERIZATION OF CYCLIC CARBONATES - The invention relates to a process for the preparation of polycarbonate polyols, characterised in that cyclic carbonates are polymerised in the presence of DMC catalysts and chain-transfer agents consisting of polyether carbonate polyols. | 01-16-2014 |
20140031514 | PRODUCTION METHOD OF POLYCARBONATE RESIN - A method for producing a polycarbonate resin comprises a step of performing polycondensation through a transesterification reaction in the presence of a transesterification catalyst by using a dihydroxy compound as a raw material compound and a carbonic acid diester, wherein the dihydroxy compound comprises at least an aliphatic dihydroxy compound having an etheric oxygen atom on a hydroxy group, the raw material compound comprises the specific amount of a nitrogen-containing compound, and the production method of a polycarbonate resin comprises a step of previously heating the aliphatic dihydroxy compound at the specific temperature, holding the compound in the melted state for the specific time, and then mixing the melt with a carbonic acid diester. | 01-30-2014 |
20140031515 | PRODUCTION METHOD OF POLYCARBONATE RESIN - The present invention is a production method of a polycarbonate resin, including a step of performing melt polycondensation by continuously feeding a dihydroxy compound (A) having a predetermined moiety in a part of the structure and a carbonic acid diester each in a liquid state to a reactor, wherein the residence time from liquefaction of the dihydroxy compound to its feeding to a reactor is from 0.1 to 10 hours. | 01-30-2014 |
20140031516 | PROCESS FOR MANUFACTURING POLYCARBONATE FROM DERIVATIVES OF DIANHYDROHEXITOLS BEARING TWO ALKYL CARBONATE FUNCTIONS - A process for manufacturing polycarbonate includes:—a step (1) of introducing into a reactor a particular composition (A) of at least one dianhydrohexitol carbonate bearing two alkyl carbonate functions; a step (2) of introducing a diol or a mixture of diols (B); a subsequent step (3) of polycondensation by transesterification of the mixture of monomers including (A) and (B); a step (4) of recovering the polycarbonate formed during step (3). | 01-30-2014 |
20140031517 | PROCESS FOR MANUFACTURING POLYCARBONATE FROM DIANHYDROHEXITOL DIALKYLCARBONATE - A process for manufacturing a polycarbonate, having a glass transition temperature greater than or equal to 50° C., includes: ▪ a step (1) of introducing into a reactor a monomer of formula (I) and R1 and R2 being identical or different alkyl groups; ▪ a step (2) of introducing into the reactor at least one cyclic diol or a mixture of diols (B) including at least 20 mol % of cyclic diols; ▪ a subsequent step (3) of polycondensation via transesterification of the mixture of monomers including the monomers (A) and (B); ▪ a step (4) of recovering the polycarbonate formed during step (3). | 01-30-2014 |
20140121348 | POLYCARBONATE RESINS AND PROCESSES FOR PRODUCING THE SAME - The invention is to provide polycarbonate resins having excellent light resistance, transparency, hue, heat resistance, thermal stability, and mechanical strength and to provide processes for efficiently and stably producing a polycarbonate resin which stably shows those performances. The invention includes: polycarbonate resins which at least contain structural units derived from a dihydroxy compound having the portion represented by formula (1) as part of the structure thereof and which have specific properties; and processes for producing the polycarbonate resins, | 05-01-2014 |
20140163197 | PROCESS FOR MAKING POLYETHER ALCOHOLS HAVING OXYETHYLENE UNITS BY POLYMERIZATION OF ETHYLENE CARBONATE IN THE PRESENCE OF DOUBLE METAL CYANIDE CATALYSTS - Ethylene carbonate is polymerized by itself or together with another cyclic monomer such as 1,2-propylene oxide in the presence of a double metal cyanide catalyst. Most of the ethylene carbonate adds to the chain to form a terminal carbonate group, which decarboxylates to produce a hydroxyethyl group at the end of the polymer chain. The polymerization of more ethylene carbonate onto the chain end results in the formation of poly(ethyleneoxy) units. Therefore, the process provides a method for making poly(ethyleneoxy) polymers without the need to polymerize ethylene oxide. The process is useful for making polyethers that are useful as water-absorbable polymers, surfactants and as raw materials for polyurethanes. The process is also useful for increasing the primary hydroxyl content of a polyether. | 06-12-2014 |
20140221602 | METHOD FOR ACTIVATING DOUBLE METAL CYANIDE CATALYSTS FOR THE PRODUCTION OF POLYETHER CARBONATE POLYOLS - The present invention relates to a process for the activation of double metal cyanide (DMC) catalysts with heterocumulenes for the preparation of polyether carbonate polyols by catalytic copolymerization of carbon dioxide (CO | 08-07-2014 |
20140296473 | POLYCARBONATE COPOLYMER AND METHOD OF PRODUCING THE SAME - The problem to be solved by the present invention is to provide a polycarbonate copolymer containing a plant-derived raw material, which is excellent in the mechanical strength and heat-resistant and assured of small refractive index, large Abbe number, small birefringence and excellent transparency. The present invention provides a polycarbonate copolymer containing a constitutional unit derived from a dihydroxy compound represented by the following formula (1) and a constitutional unit derived from an alicyclic dihydroxy compound, wherein the Abbe number is 50 or more and the 5% thermal reduction temperature is 340° C. or more; and a method of producing this polycarbonate copolymer by reacting a dihydroxy compound represented by the following formula (1) and an alicyclic hydroxy compound with a carbonic acid diester in the presence of a polymerization catalyst. | 10-02-2014 |
20140357834 | ARAMID COPOLYMER YARN HAVING LOW RESIDUAL SULFUR - The present invention concerns yarn comprising polymer, the polymer comprising imidazole groups, the yarn having a sulfur content of 0.01 to 3.0 percent by weight, based on weight of the yarn, the yarn having a tenacity of 30 cN/dtex (33.3 gpd) or higher. | 12-04-2014 |
20140378648 | METHOD FOR PREPARING A COMPOUND COMPRISING AT LEAST ONE BETA-HYDROXY-URETHANE UNIT AND/OR AT LEAST ONE UPSILON-HYDROXY-URETHANE UNIT - The invention relates to a method for preparing a compound comprising at least one β-hydroxy-urethane unit and/or at least one γ-hydroxy-urethane unit, consisting in reacting a compound (A) comprising at least one cyclocarbonate reactive unit with a compound (B) comprising at least one amino reactive unit (—NH2) in the presence of a catalyst. The invention also relates to the use of a catalyst comprising at least one organometallic complex and a co-catalyst chosen from the group of Lewis bases and/or tetra-alkyl ammonium salts, in order to catalyse the method of the invention. The invention relates to the technical field of preparing urethane derivatives. | 12-25-2014 |
20160083512 | POLYMER PRODUCT, FILM, MOLDED ARTICLE, SHEET, PARTICLE, FIBER, AND METHOD FOR PRODUCING POLYMER - To provide a polymer product, which contains aliphatic polycarbonate, wherein an oxide unit content in the aliphatic polycarbonate is 20 mol % or less, and wherein a monomer content in the aliphatic polycarbonate is 500 ppm or less, where the monomer is a monomer that is a base of the aliphatic polycarbonate. | 03-24-2016 |
20160115275 | Monomers Issued From Renewable Resources and Process for Polymerising Them - Polycarbonates prepared from carbonate monomers derived from the biomass are synthesized in the presence of an organometallic transfer agent and an alcohol. The number average molecular weight Mn of the final polymer increases with increasing the monomer/alcohol ratio. | 04-28-2016 |
528372000 | Reactant contains a halogen atom directly bonded to a carbon atom of a carbonyl group, i.e., halo-C(=O)- | 6 |
20110046340 | LARGE SCALE PROCESS FOR POLYMERIZATION OF DAPBI-CONTAINING POLYARAMID - A method for obtaining an aromatic polyamide crumb from an aromatic diamine and an aromatic diacid chloride, which aromatic polyamide comprises 5(6)-amino-2-(p-aminophenyl)benzimidazole terephthalamide units and has a relative viscosity η | 02-24-2011 |
20110213118 | POLYARAMID COMPRISING FLUOROVINYLETHER FUNCTIONALIZED AROMATIC MOIETIES - The invention is directed to polyaramid polymers, comprising repeat units of the condensation product of a fluorovinylether functionalized aromatic diacid chloride and an aromatic diamine, and methods to make said polyaramid polymers. The polymers of this invention are useful as high strength fibers or solution cast films with reduced surface susceptibility to oil. | 09-01-2011 |
20130012683 | MULTIFUNCTIONAL COMPOUNDS FOR FORMING CROSSLINKED BIOMATERIALS AND METHODS OF PREPARATION AND USE - Multifunctional compounds are provided that readily crosslink in situ to provide crosslinked biomaterials. The multifunctional compounds contain a single component having at least three reactive functional groups thereon, with the functional groups selected so as to be non-reactive in an initial environment and inter-reactive in a modified environment. Reaction of a plurality of the multifunctional compounds results in a three-dimensional crosslinked matrix. In one embodiment, a first functional group is nucleophilic, a second functional group is electrophilic, and at least one additional functional group is nucleophilic or electrophilic. Methods for preparing and using the multifunctional compounds, and kits including the multifunctional compounds are also provided. Exemplary uses for the multifunctional compounds include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury. | 01-10-2013 |
20130203956 | ARAMID COPOLYMER - The invention concerns polymer comprising residues of 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), paraphenylene diamine, and terephthaloyl dichloride, the polymer having a IPC peak block ratio of 1.45 to 1.47 and an inherent viscosity of greater than 2 dl/g. | 08-08-2013 |
20130203957 | ARAMID COPOLYMER - The invention concerns polymer comprising 2-(4-amino phenyl)-5 (6) amino phenyl benzimidazole (DAPBI), PPD, and terephthaloyl dichloride, the polymer having a IPC peak block ratio of 1.52 to 1.56 and an inherent viscosity of greater than 2 dl/g. | 08-08-2013 |
20130289235 | MULTIFUNCTIONAL COMPOUNDS FOR FORMING CROSSLINKED BIOMATERIALS AND METHODS OF PREPARATION AND USE - Multifunctional compounds are provided that readily crosslink in situ to provide crosslinked biomaterials. The multifunctional compounds contain a single component having at least three reactive functional groups thereon, with the functional groups selected so as to be non-reactive in an initial environment and inter-reactive in a modified environment. Reaction of a plurality of the multifunctional compounds results in a three-dimensional crosslinked matrix. In one embodiment, a first functional group is nucleophilic, a second functional group is electrophilic, and at least one additional functional group is nucleophilic or electrophilic. Methods for preparing and using the multifunctional compounds, and kits including the multifunctional compounds are also provided. Exemplary uses for the multifunctional compounds include tissue augmentation, biologically active agent delivery, bioadhesion, and prevention of adhesions following surgery or injury. | 10-31-2013 |