| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 528176000 | With polycarboxylic acid or derivative as reactant | 68 |
| 20080221295 | Method for Producing Polycarbonate Copolymer - The invention provides a method for producing a PC copolymer having a specific structure from a diester diol serving as a starting material, which method attains enhanced productivity. | 09-11-2008 |
| 20090131625 | Processes for making elastomeric polyester esters from post-consumer polyester - Processes for making elastomeric polyether esters from polyesters and polyols are provided. The processes can offer a reduction in manufacturing cost, energy use and a lower environmental footprint than conventional processes, particularly when the processes utilize post-consumer polyesters as starting materials. | 05-21-2009 |
| 20100137549 | PRODUCTION APPARATUS OF POLYCARBONATE RESIN AND PRODUCTION METHOD OF POLYCARBONATE RESIN - The present invention relates to a production apparatus of a polycarbonate resin in which generation of adherents or foreign matters in a polymerization tank is reduced, and a production method of a polycarbonate resin in which crystallized foreign matters or burned foreign matters are reduced, by melt method. The present invention relates to a continuous production apparatus of a polycarbonate resin using a plurality of polymerization tanks, wherein when supplying a molten reactant to a liquid phase in a polymerization tank, or supplying the molten reactant to a gas phase in the polymerization tank by an insertion pipe, in at least one polymerization tank, and/or producing a polycarbonate resin by an ester exchange reaction between an aromatic dihydroxy compound and a carbonic diester by using three vertical polymerization tanks and one horizontal polymerization tank, equipped with a stirring device, a wall surface temperature T of a distillation pipe | 06-03-2010 |
| 20110021739 | POLYCARBONATE RESIN - The object of the present invention is to provide a polycarbonate resin having an extremely narrow molecular weight distribution, good flowability when melting, and particularly extremely good flowability when melting that does not depend on shear rate. The present invention relates to a polycarbonate resin, characterized in that a value obtained by dividing difference between a logarithmic value log MV | 01-27-2011 |
| 20110237771 | METHOD FOR PRODUCING POLYESTER RESIN - A method for producing polyester resin includes: esterifying an alcoholic component, and an acid component containing polyvalent carboxylic acid and/or an ester-forming derivative thereof in a reaction solution. A condition of reaction pressure is changed from a pressurized state to a normal pressure state, or to a depressurized state under a condition (I) that an acid-based extent of reaction of the esterification is 76-94%, and a condition (II) that an undissolved acid component is present in the reaction solution. | 09-29-2011 |
| 20120123083 | POLYESTER CARBONATE COPOLYMER FOR OPTICAL LENS AND OPTICAL LENS - This invention is to provide a polyester carbonate copolymer suitable for an optical lens that has high refractivity and transparency and low birefringence and little optical strain, and optical lenses formed therefrom. | 05-17-2012 |
| 20120172570 | AROMATIC POLYESTER - The present invention provides an aromatic polyester which is substantially free from the occurrence of coloration and retains significantly high transparency even after being thermally processed at high temperature and which has high flowability. The aromatic polyester contains a polyhydric phenol residue and a residue of any one of aromatic polycarboxylic acid, halide thereof, and anhydride thereof, and terminals of the aromatic polyester have a structure represented by the formula —C(O)—R. The aromatic polyester has an end-capping rate of 90% or higher and a weight average molecular weight (Mw) ranging from 3,000 to 1,000,000. | 07-05-2012 |
| 20130281652 | FUNCTIONALIZED PHENOLIC COMPOUNDS AND POLYMERS THEREFROM - The present invention relates to compounds of formula I, which are functionalized phenolic compounds, and polymers formed from the same. | 10-24-2013 |
| 528179000 | Polymerizing in the presence of a specified material other than a reactant and other than Group IA or Group IIA material as sole metal atom | 13 |
| 20150299387 | POLYCARBONATE HAVING HIGH FLUIDITY AND METHOD OF PREPARING THE SAME (As Amended) - Disclosed are polycarbonate having high fluidity through inclusion of an aliphatic polyhydric alcohol-substituted diphenol compound in a polycarbonate backbone and a method of preparing the same. The polycarbonate is polymerized by comprising a diphenol mixture and a carbonate precursor, the diphenol mixture comprising an aliphatic polyhydric alcohol-substituted diphenol compound according to Formula 1 and a bisphenol compound. | 10-22-2015 |
| 20160159984 | METHOD FOR PRODUCING POLYIMIDE RESIN POWDER, AND THERMOPLASTIC POLYIMIDE RESIN POWDER - The present invention provides a method for producing a polyimide resin powder, including the step of reacting (A) a tetracarboxylic acid component containing a tetracarboxylic dianhydride with (B) a diamine component containing an aliphatic diamine in the presence of (C) a solvent containing an alkylene glycol-based solvent represented by the formula (1): | 06-09-2016 |
| 528180000 | Material contains a metal atom | 5 |
| 20090036634 | Process for Preparing Polyarylate - The present invention relates to a process for preparing polyarylate, and more specifically, to a process for preparing polyarylate by interfacial polymerization of a bivalent phenol compound and an aromatic dicarboxylic acid or a halide thereof, which comprises mixing a cationic catalyst for the phase transition and a nonionic surfactant in a predetermined ratio, to further increase the yield of polyarylate, as compared with the case of using each of the nonionic surfactant and the cationic catalyst for the phase transition alone. | 02-05-2009 |
| 20140256903 | LIQUID CRYSTAL POLYESTER AMIDE RESIN - Provided is a liquid crystal polyester amide resin which has a good hue. Specific monomers are polymerized using a specific catalyst. The specific monomers are composed of: at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines; and at least one kind of a monomer selected from among aromatic hydroxy carboxylic acids, aromatic dicarboxylic acids or aliphatic dicarboxylic acids, and aromatic diols or aliphatic diols. It is preferable that the content of the at least one kind of a monomer selected from among aromatic aminocarboxylic acids, aromatic hydroxyamines and aromatic diamines is from 0.1 mol % to 85 mol % (inclusive). | 09-11-2014 |
| 528181000 | At least one transition metal atom | 3 |
| 20090036635 | PROMOTER FOR POLYCONDENSATION REACTION - A promoter for a polycondensation reaction used together with a catalyst in a polycondensation reaction, the promoter for a polycondensation reaction comprising a pyrogallol compound having a benzene ring of which three hydrogen atoms adjacent to each other are substituted by hydroxyl groups; and a polycondensation resin obtained by polycondensing raw material monomers using the promoter as defined above and the catalyst. A polycondensation resin can be produced using the promoter of the present invention together with a catalyst in a polycondensation reaction, and the polycondensation resin can be used in various applications including, for example, films, sheets, fibers, toner materials for electrophotography, and the like. | 02-05-2009 |
| 20120309924 | Process for Preparing Amide Gellant Compounds with Aromatic End Groups - Disclosed is a process for preparing a compound of the formula | 12-06-2012 |
| 20140024798 | TITANIUM-BASED CATALYST SHOWING EXCELLENT ACTIVITY AND SELECTIVITY IN POLYCONDENSATION REACTIONS - A polycondensation reaction mixture is disclosed which includes a catalyst, acyclic esters, ethylene glycol, and water. The catalyst is a titanium atrane. The polycondensation reaction mixture is prepared by the steps of (a) contacting a solution comprising a titanium (IV) alkoxide compound and a first solvent with an organic acid; (b) contacting the solution formed in step (a) with a substituted or unsubstituted trialkanolamine to form an impure catalyst; (c) purifying the impure catalyst to form the titanium atrane catalyst; and (d) bringing the catalyst into contact with the acyclic esters under conditions that produce the ethylene glycol and water. | 01-23-2014 |
| 528182000 | Material is a nitrogen-containing compound | 6 |
| 20100197883 | POLYESTER RESIN AND FABRICATION METHOD THEREOF - A polyester resin and a fabrication method thereof are provided. The fabrication method includes providing a diphenol monomer and a diacid monomer. The diphenol monomer is acetylated and then melt pre-polymerized with diacid monomer to form a pre-polymer. Then, the pre-polymer is polymerized by solid state polymerization to form a heat-resistant and transparent polyester resin. | 08-05-2010 |
| 20120329975 | METHOD FOR PRODUCING LIQUID CRYSTAL POLYESTER - Disclosed is a method for producing a liquid crystal polyester, which includes the following steps of:
| 12-27-2012 |
| 20130030141 | METHOD FOR PRODUCING LIQUID-CRYSTALLINE POLYESTER - The present invention provides a method for producing a liquid-crystalline polyester, which comprises melt-polymerizing monomers in a reactor having a draw outlet to obtain a polymer melt and drawing the polymer melt through the draw outlet, characterized in that the monomers comprise a compound selected from an aromatic hydroxycarboxylic acid and derivatives thereof, a compound selected from an aromatic dicarboxylic acid and derivatives thereof and a compound selected from an aromatic diol, an aromatic hydroxyamine, an aromatic diamine and derivatives thereof; the amount of units derived from a compound containing a 1,2-phenylene and/or a 1,3-phenylene skeleton(s) in the polyester is from 0 to 10 mold; the melt polymerization is performed in the presence of a heterocyclic compound containing two or more nitrogen atoms; and the polymer melt has a flow initiation temperature of from 220 to 250° C. | 01-31-2013 |
| 20130030142 | METHOD FOR PRODUCING LIQUID-CRYSTALLINE POLYESTER - The present invention provides a method for producing a liquid-crystalline polyester, the method comprising: a step of melt-polymerizing raw monomers in a melt polymerization vessel to obtain a polymer melt; a step of drawing the polymer melt from the melt polymerization vessel and granulating the polymer melt to obtain a granulate; a step of allowing the granulate to undergo solid phase polymerization in a solid phase polymerization vessel to obtain a solid phase polymer; and a step of making an impact on the solid phase polymerization vessel containing the solid phase polymer, and taking out the solid phase polymer from the solid phase polymerization vessel. | 01-31-2013 |
| 20140088284 | Crosslinkable Liquid Crystalline Polymer - A crosslinkable liquid crystalline polymer that is formed by polymerizing a precursor monomer in the presence of an aromatic crosslinking agent is provided. The crosslinking agent has the following general formula (I): | 03-27-2014 |
| 20140343244 | METHODS FOR PREPARATION OF POLYESTER OLIGOMER VIA BASE CATALYSIS - The invention relates to methods and systems for preparing macrocyclic polyester oligomer (MPO) via base catalysis. It is found that base catalysts are effective in the production of MPO, and they reduce the potential for undesired byproducts such as furans (e.g., THF) and acetaldehyde, which result from diol side reactions. | 11-20-2014 |
| 528183000 | Nitrogen reactant contains at least one amino-nitrogen atom | 15 |
| 20100121017 | POLYBENZAZOLES AND POLYBENZAZOLE PRECURSORS - The invention relates to a fiber, pulp, fibril, or fibrid comprising polybenzazole having a repeating unit of formula (I) or (II) wherein Ar | 05-13-2010 |
| 20100317821 | POLYIMIDE RESIN AND LIQUID CRYSTAL ALIGNMENT LAYER AND POLYIMIDE FILM USING THE SAME - Disclosed is a polyimide resin, which is colorless and transparent and has superior properties, including mechanical properties and heat stability, and thus is usable in various fields, including semiconductor insulating films, TFT-LCD insulating films, transparent electrode films, passivation films, liquid crystal alignment layers, optical communication materials, protective films for solar cells, and flexible display substrates. Also, a liquid crystal alignment layer and a polyimide film using the polyimide resin are provided. | 12-16-2010 |
| 20110144297 | RAPID THERMAL CONVERSION OF A POLYAMIC ACID FIBER TO A POLYIMIDE FIBER - The invention provides a process comprising heating a polyamic acid fiber to a temperature in the range of a first temperature and a second temperature for a period of time in the range of 5 seconds to 5 minutes to form a polyimide fiber, wherein the first temperature is the imidization temperature of the polyamic acid and the second temperature is the decomposition temperature of the polyimide | 06-16-2011 |
| 20120329976 | PROCESS FOR PREPARING POLYAMIDES COMPRISING FLUOROETHER FUNCTIONALIZED AROMATIC MOIETIES - The invention is directed to a process for preparing polyamide polymers, particularly nylon 6, 6 and nylon 6, comprising fluoroether functionalized aromatic repeat units. In one embodiment, 1,6 diaminohexane, adipic acid, and fluoroether functionalized terephthallic or isophthallic acid or diester are reacted to form a polymer. The polymers so formed are useful for imparting soil resistance to polyamides, particularly in the form of films, molded parts, fibers, fabrics, and carpets. | 12-27-2012 |
| 528184000 | Nitrogen reactant having at least one amino-nitrogen atom contains a carboxylic acid group or is a derivative thereof | 7 |
| 20090076241 | BIOMIMETIC COMPOUNDS AND SYNTHETIC METHODS THEREFOR - Synthesis methods for creating polymeric compounds comprising dihydroxyphenyl derivatives (DHPD), or DHPp i.e. polymers modified with DHPD, with desired surface active effects are described. The polymer backbone of DHPp has structural or performance features that can be tailored to control physical properties of DHPp, allowing it to be useful for different applications i.e. tissue adhesives or sealants, adhesion promoting coatings, and antifouling coatings. | 03-19-2009 |
| 20090088548 | Resorbable Phenolic Polymers - The invention provides biocompatible resorbable polymers, comprising monomer units having formula (I), formula (II), formula (III) or formula (IV). The polymers degrade over time when implanted in the body, and are useful as components of implantable medical devices. | 04-02-2009 |
| 20100063242 | PREPARATION AND USES OF POLYARYLATES - The present invention is directed to polyarylates comprising repeating units having the structure: | 03-11-2010 |
| 20110245450 | MODIFIED POLYAMIDE, METHOD FOR PREPARING SAME, AND ARTICLE OBTAINED FROM SAID POLYAMIDE - A polyamide modified by a compound including at least one hydroxyl group, as well as to a method for preparing such a polyamide, and articles obtained from such a polyamide are described. A polyamide modified by a compound comprising at least one aromatic hydroxyl group and chemically bonded to the polymer chain, obtained by the polymerisation of polyamide monomers with at least one difunctional hydroxyaromatic compound in which both functions can react with an amino function is also described. | 10-06-2011 |
| 20110282026 | Fluorine-Containing Dicarboxylic Acids and Their Novel Polymer Compounds - A fluorine-containing dicarboxylic acid represented by formula (1), | 11-17-2011 |
| 20120165495 | RESORBABLE PHENOLIC POLYMERS - The invention provides biocompatible resorbable polymers, comprising monomer units having formula (I), formula (II), formula (III) or formula (IV). The polymers degrade over time when implanted in the body, and are useful as components of implantable medical devices. | 06-28-2012 |
| 20120309925 | POLYPHENYLENE ETHER AND METHOD FOR PRODUCING THE SAME - [Problem to be Solved] | 12-06-2012 |
| 528186000 | Nitrogen reactant contains at least three amino-nitrogen atoms bonded to one or more carbon atoms | 2 |
| 20110275781 | Nitro compound, amine compound, polyimide and polyimide copolymer derived therefrom - A polyimide represented by formula (6) is provided. The polyimide is fabricated by performing a polycondensation reaction with a amine compound shown in formula (4) and a dianhydride compound shown in formula (5) as monomers. In formulas (5) and (6), Ar represents aromatic group, and n represents a positive integer. | 11-10-2011 |
| 20130012679 | 2,4,5-TRIAMINOPHENOLS AND RELATED COMPOUNDS - New triaminophenol compositions and related compounds are disclosed, as are processes for their preparation and for the preparation of novel salts and diacid complexes from such compounds. Polymers prepared from these compositions can be made into high strength fiber, film, and tape and are useful in applications such as protective apparel, aircraft, automotive components, personal electronics, and sports equipment. | 01-10-2013 |
| 528188000 | Reactant contains three or more carboxylic acid groups or is derivative thereof | 2 |
| 20140200325 | CRYSTALLINE THERMOPLASTIC POLYIMIDE RESIN - A thermoplastic polyimide resin containing a repeating structural unit represented by the following formula (1) and a repeating structural unit represented by the following formula (2), a content ratio of the repeating structural unit of formula (1) with respect to the total of the repeating structural unit of formula (1) and the repeating structural unit of formula (2) being from 40 to 70% by mol: | 07-17-2014 |
| 528189000 | Two or more polycarboxylic acids or derivatives or mixtures thereof | 1 |
| 20100305295 | PROCESS FOR PRODUCING POLYAMIC ACID SOLUTION AND POLYAMIC ACID SOLUTION - Disclosed is a process for producing a polyamic acid solution by reacting a diamine component consisting essentially of 20 mol % to 80 mol % of p-phenylenediamine and 80 mol % to 20 mol % of diaminodiphenyl ether with a tetracarboxylic acid component consisting essentially of 10 mol % to 60 mol % of 2,3,3′,4′-biphenyltetracarboxylic dianhydride and 90 mol % to 40 mol % of 3,3′,4,4′-biphenyltetracarboxylic dianhydride in a solvent, comprising: | 12-02-2010 |
| 528190000 | Reactant contains a fused- or bridged-ring other than solely as a polycarboxylic acid anhydride group | 13 |
| 20090105443 | ALIPHATIC POLYCARBONATES, METHODS OF MAKING, AND ARTICLES FORMED THEREFROM - A method of making a polycarbonate is described. The method comprises melt reacting an ester-substituted diaryl carbonate and a multifunctional compound of the formula: | 04-23-2009 |
| 20100121018 | POLYCARBONATE RESIN AND METHOD FOR PRODUCING THE SAME - The present invention can provide a polycarbonate resin containing a structural unit represented by the following formula (1). | 05-13-2010 |
| 20110092662 | AROMATIC POLYESTER - There is provided an aromatic polyester suitable for optical applications, which has not only high heat resistance and transparency, but also enhanced fluidity at a relatively low molding temperature of less than 300° C. despite its high molecular weight to be substantially colorless after the molding process. The aromatic polyester of the present invention comprises polyhydric phenol residues and residues of aromatic polycarboxylic acid, acid halide or acid anhydride thereof; wherein the polyhydric phenol residues comprise polyhydric phenol residues represented by Formula (I): —O—Ar—W | 04-21-2011 |
| 20120277398 | INSULATING FILM FOR ELECTROMAGNETIC COIL, AND MOTOR AND TRANSFORMER HAVING THE SAME - The invention relates to an insulating film for an electromagnetic coil which is composed of a liquid crystal polyester, in which the liquid crystal polyester has a structural unit represented by the following formula (1), a structural unit represented by the following formula (2), and a structural unit represented by the following formula (3), and the amount of the structural units including a 2,6-naphthalenediyl group is 40 mol % or more with respect to the total amount of all the structural units. | 11-01-2012 |
| 20130053531 | Method for Minimizing Process Disruptions During Formation of a Liquid Crystalline Polymer - A method for lowering melt viscosity of a liquid crystalline polymer as it is formed in a reactor vessel. More particularly, a reaction mixture is initially supplied to the reactor vessel that contains two or more precursor monomers (e.g., acetylated or non-acetylated). The reaction mixture is heated to an elevated temperature under agitation to initiate formation of the polymer. After a certain period of time, an aromatic amide oligomer is added to the reaction mixture. Among other things, the present inventors have discovered that such an oligomer can serve as a flow aid by altering intermolecular polymer chain interactions, thereby lowering the overall viscosity of the polymer matrix under shear. This minimizes the likelihood of “freeze off” of the polymer within the reactor vessel and limits the impact of process disruptions on the production of the liquid crystalline polymer. | 02-28-2013 |
| 20130116397 | METHOD FOR PREPARING AN AROMATIC LIQUID CRYSTAL POLYESTER RESIN AND METHOD FOR PREPARING A COMPOUND OF AROMATIC LIQUID CRYSTAL POLYESTER RESIN - Methods of preparing an aromatic liquid crystalline polyester resin and an aromatic liquid crystalline polyester resin compound are disclosed. A method of preparing an aromatic liquid crystalline polyester resin may include: acetylating a first monomer including an amino group by a reaction with a carboxylic acid anhydride; acetylating a second monomer including a hydroxyl group and not including an amino acid group with an additional carboxylic acid anhydride; and synthesizing an aromatic liquid crystalline polyester prepolymer by a condensation polymerization reaction of the acetylated first and second monomers with dicarboxylic acid. A method of preparing an aromatic liquid crystalline polyester resin compound may use the aromatic liquid crystalline polyester resin prepared according to the forgoing method. | 05-09-2013 |
| 20130231453 | METHOD FOR PREPARING WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER AMIDE RESIN AND METHOD FOR PREPARING WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER AMIDE RESIN COMPOUND - A method of preparing a wholly aromatic liquid crystalline polyester amide resin and a method of preparing a wholly aromatic liquid crystalline polyester amide resin compound. The method of preparing a wholly aromatic liquid crystalline polyester amide resin is performed using a monomer having both a hydroxyl group and an acetylamino group or using a monomer having a hydroxyl group and a monomer having an acetylamino group. In addition, the method of preparing a wholly aromatic liquid crystalline polyester amide resin compound is performed using a wholly aromatic liquid crystalline polyester amide resin that is prepared using the method. | 09-05-2013 |
| 20130331540 | METHOD OF PREPARING WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN AND RESIN PREPARED BY THE METHOD, AND COMPOUND INCLUDING THE RESIN - Provided is a method of preparing a wholly aromatic liquid crystalline polyester resin and a wholly aromatic liquid crystalline polyester resin prepared by the method, and a compound of the wholly aromatic liquid crystalline polyester resin. The disclosed method of preparing the wholly aromatic liquid crystalline polyester resin includes a step (a first temperature increasing step) of increasing the temperature of a reaction mixture including at least one monomer at a first temperature increasing rate up to a first temperature; a step (an isothermal maintaining step) of maintaining the reaction mixture that passed through the first temperature increasing step at the first temperature for a first time; and a step (a second temperature increasing step) of increasing the temperature of the reaction mixture that passed through the isothermal maintaining step at a second temperature increasing rate. | 12-12-2013 |
| 20150126702 | POLYESTER RESIN, ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER, AND TONER CONTAINER - A polyester resin is a polymer of a carboxylic acid component and an alcohol component including a rosin diol represented by the formula (1), wherein an acid value is from 10 mg KOH/g to 30 mg KOH/g, a content of carboxylic acid having a rosin skeleton in the resin is 1% by weight or less, and a content of carboxylic acid except carboxylic acid having the rosin skeleton in the resin is 1% by weight or less: | 05-07-2015 |
| 20150291730 | POLYESTER RESIN FOR TONERS, METHOD FOR PRODUCING SAME, AND TONER - The invention relates to a polyester resin for toner, the polyester resin containing a monomer unit derived from isosorbide and a monomer unit derived from 1,2-propanediol, in which the proportion of the monomer unit derived from isosorbide is from 2 to 11% by mass with respect to the total mass of the polyester resin, and a glass transition temperature (Tg) of the polyester resin for toner is from 56 to 70° C. According to the invention, it is possible to provide a polyester resin for toner from which toner excellent in storage stability, fixing property, hot offset resistance and image stability in the case of using isosorbide is obtained, and a method for producing the polyester resin for toner. In addition, the toner obtained from the polyester resin for toner of the invention is excellent in storage stability, fixing property, hot offset resistance and image stability in the case of using isosorbide. | 10-15-2015 |
| 20150336869 | DICARBOXYLIC ACID MONOMERS AND METHODS OF MAKING AND USING THE SAME - Disclosed herein are phenylindane dicarboxylic acid (PIDA) monomers, polymer compositions comprising the PIDA monomers, and methods of preparing PIDA monomers. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure. | 11-26-2015 |
| 20160024247 | POLYESTER COMPOUND - Polyester compounds obtained by reaction of a compound represented by formula (1): | 01-28-2016 |
| 20160024248 | POLYESTER COMPOUND - Polyester compounds obtained by reaction of a compound represented by formula (1): | 01-28-2016 |
| 528191000 | Reactant contains a halogen atom other than solely as halogen atom bonded to a carbonyl group | 2 |
| 20120108781 | POLYMER COMPRISING CYCLOHEXYLENE GROUPS AND ITS USE IN FILMS WITH NEGATIVE OPTICAL DISPERSION - The invention relates to novel polymers comprising cyclohexylene groups which are especially suitable for use in birefringent films with negative optical dispersion, to novel formulations and polymer films comprising them, and to the use of the polymers, formulations and films in optical, electrooptical, electronic, semiconducting or luminescent components or devices. | 05-03-2012 |
| 20130345387 | METHOD FOR PRODUCING POLYESTER, AND FLUORINE-CONTAINING DICARBOXYLIC ACID ESTER COMPOUND - The present invention relates to a method for producing a polyester, containing conducting a transesterification reaction of at least one compound selected from compounds represented by the following formulae (1) to (3) with a diol compound in the presence of a catalyst: | 12-26-2013 |
| 528192000 | Ethylenically unsaturated reactant | 2 |
| 20100261867 | POLYESTER RESIN AND TONER INCLUDING THE SAME - A toner for an electrophotographic image forming process or an electrostatic printing process, and a polyester resin for the toner are disclosed. The polyester resin comprises: acid components including aromatic dibasic acid component and trivalent or higher acid component; alcohol components including aliphatic, aromatic or cycloaliphatic diol component, and trihydric or higher alcohol component; poly olefin polyol having number average molecular weight of 1,800 to 2,500 and hydroxyl value of 40 to 55 KOHmg/g; and wax having melting point of 80 to 110° C., wherein the amount of the poly olefin polyol is 0.1 to 2 weight % and the amount of the wax is 0.5 to 15 weight % with respect to the total polyester resin. | 10-14-2010 |
| 20140088285 | Crosslinkable Liquid Crystalline Polymer - A crosslinkable liquid crystalline polymer that is formed by polymerizing a precursor monomer in the presence of an aromatic crosslinking agent is provided. The crosslinking agent has the following general formula (I): | 03-27-2014 |
| 528193000 | Two or more phenolic reactants | 12 |
| 20130012680 | WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER AND METHOD OF PRODUCING THE SAME - A wholly aromatic liquid crystalline polyester contains 2.0 to 15.0 mole percent of a hydroquinone-derived structural unit relative to a total amount of structural units. The wholly aromatic liquid crystalline polyester has sum of an amount (a) of terminal hydroxyl group and an amount (b) of terminal acetyl group in a range of 50 to 350 equivalents/(g·10 | 01-10-2013 |
| 20130035468 | THERMOPLASTIC RESIN WITH HIGH THERMAL CONDUCTIVITY - Provided is a thermoplastic resin having excellent thermal conductivity, in which thermoplastic resin a change in number average molecular mass caused by progress of polymerization occurring when the thermoplastic resin material is melted and a change in thermal conductivity caused by the change in number average molecular mass are low. The thermoplastic resin has (A) a specific structure and (B) ends of molecular chains sealed by a monofunctional low molecular weight compound. The resin itself has excellent thermal conductivity. The change in number average molecular mass becomes small during melting of the thermoplastic resin material, so that the change in thermal conductivity of the resin itself becomes small. | 02-07-2013 |
| 20130053532 | Melt Polymerization of Low Melt Viscosity Liquid Crystalline Polymers - A method for forming a high molecular weight liquid crystalline polymer is provided. The method include melt polymerizing two or more precursor monomers (e.g., acetylated or non-acetylated) in the presence of an aromatic amide oligomer. The present inventors have discovered that such an oligomer can lower the melt viscosity of the viscous polymer as it is formed. The ability to lower melt viscosity in situ during melt polymerization enables the formation of high molecular weight polymers that display low melt viscosity and can still be removed from the reactor vessel without solidifying therein. This not only improves the ease of processing, but also allows molecular weights to be reached that are even higher than conventionally practical. | 02-28-2013 |
| 20130053533 | Solid-State Polymerization of a Liquid Crystalline Polymer - A method for forming a high molecular weight thermotropic liquid crystalline polymer is provided. The method includes melt polymerizing two or more monomers in the presence of a unique aromatic amide oligomer to form a prepolymer, and then solid-state polymerizing the prepolymer to achieve a target molecular weight. The present inventors have discovered that a unique aromatic amide oligomer can be employed to help increase the “low shear” complex viscosity of the resulting solid-state polymerized composition. This allows for the attainment of higher than conventional “low shear” complex viscosity values and/or a substantial reduction in the solid-state polymerization time needed to achieve a target complex viscosity. In addition, the oligomeric flow aid can also accelerate the extent to which the “high shear” melt viscosity is increased during solid-state polymerization, which may also contribute to a substantial reduction in the solid-state polymerization time needed to achieve a certain molecular weight. | 02-28-2013 |
| 20130137845 | PRODUCTION METHOD FOR A WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN, A WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN PRODUCED BY MEANS OF THE METHOD, AND A COMPOUND OF THE WHOLLY AROMATIC LIQUID CRYSTALLINE POLYESTER RESIN - Disclosed are a production method for a wholly aromatic liquid crystalline polyester resin, a wholly aromatic liquid crystalline polyester resin produced using the method, and a compound of the wholly aromatic liquid crystalline polyester resin. The disclosed production method for a wholly aromatic liquid crystalline polyester resin comprises the steps of synthesizing a wholly aromatic liquid crystalline polyester resin by synthesizing a wholly aromatic liquid crystalline polyester prepolymer by a condensation polymerization of a monomer and then reducing the pressure inside a reaction vessel containing the synthesized prepolymer at a predetermined internal pressure reduction rate of the reaction vessel. | 05-30-2013 |
| 20130165621 | Method for Preparing Polycondensation Resin - Disclosed herein is a method for preparing a polycondensation resin. The method includes preparing a low degree condensate; and solid phase polymerizing the low degree condensate, wherein a granular molded article is introduced into the solid phase polymerization. The method enables efficient manufacture of high quality resins without problems such as agglomeration or scaling of a low degree condensate in pipes. | 06-27-2013 |
| 20130296523 | PROCESS FOR PRODUCING LIQUID CRYSTALLINE POLYESTER RESIN AND APPARATUS FOR PRODUCING LIQUID CRYSTALLINE POLYESTER RESIN - The present invention provides a process for producing a liquid crystalline polyester resin, wherein an acetylation reaction and an oligomerization reaction of raw materials are carried out in an acetylation reaction vessel, and then a deacetylation polycondensation of a liquid after the oligomerization reaction is carried out in a polycondensation reaction vessel, wherein the acetylation reaction vessel used is a vessel having an inner wall surface composed of an alloy containing 50% by mass or more of Ni and 10% by mass or more of Mo; and the inner wall surface of the acetylation reaction vessel is divided into three or more band-like zones arrayed in the height direction of the vessel, and the oligomerization reaction is carried out while maintaining the temperatures of each band-like zone in a particular relationship. | 11-07-2013 |
| 20140039147 | TAGGED POLYMERS AND METHODS OF USE - A polymer includes a monomeric repeat unit represented by Formula I: | 02-06-2014 |
| 20140080993 | Process For Preparing Polymeric Fibers Comprising Thermotropic Liquid Crystalline Polymer And Carbon Nanotubes - The invention relates to polymeric fibers and a process of preparing polymeric fibers. The process comprises the steps of synthesizing a composite of thermotropic liquid crystalline polymer (TLCP) comprising multi-walled carbon nanotubes (MWNTs), and spinning the composite to form composite fibers. Specifically, the MWNTs are incorporated at a very low concentration. It is demonstrated that the as-spun TLCP/MWNTs composite fibers demonstrated significantly enhanced mechanical properties as compared with the control TLCP fibers without MWNTs. Fibers having 0.3 wt % MWNTs (C-3) demonstrated an increase of tensile modulus and strength by 38% and 32%, respectively, when compared with the control TLCP fiber without MWNTs. | 03-20-2014 |
| 20140135469 | LIQUID CRYSTALLINE POLYMER COMPOSITION FOR FILMS - A film formed from a polymer composition containing one or more thermotropic liquid crystalline polymers is provided. The specific nature of the polymer or blend of polymers is selectively controlled so that the resulting polymer composition possesses both a low viscosity and high melt strength. The present inventor has discovered that this unique combination of thermal properties results in a composition that is both highly melt processible and stretchable, which allows the resulting film to be oriented to a degree greater than previously thought possible. | 05-15-2014 |
| 20140378642 | SYNTHESIS OF AND CURING ADDITIVES FOR PHTHALONITRILES - A composition having a mixture of the below compounds having a mole ratio of at least 1:20. Ar | 12-25-2014 |
| 20160039971 | MELT POLYMERIZATION REACTOR SYSTEM AND METHOD - A reactor system for producing polycarbonate includes a surface area in contact with a reaction mixture. The reaction mixture comprises a melt transesterification catalyst, a dihydroxy compound, a diaryl carbonate, and an phenolic byproduct. The surface area in contact with the reaction mixture contains one or more welds joining reactor system parts. All welds in contact with the reaction mixture join reactor system parts made from the same type of metal. If a filler metal is contained in the weld, the filler metal is made from the same type of metal as the metal parts joined by the weld. | 02-11-2016 |
| 528194000 | Two or more polycarboxylic acids or derivatives as reactants | 2 |
| 20090137768 | RANDOM AMORPHOUS COPOLYMER AND MANUFACTURING METHOD THEREOF - A random amorphous copolyester is provided. The copolyester of the invention is synthesized by using diacid monomers and diol monomers. The random amorphous copolyester has a structure of the formula (I): | 05-28-2009 |
| 20150025215 | Fluorene derivatives and lens using the same - Disclosed herein are fluorene derivatives and a lens using the same. | 01-22-2015 |
| 528195000 | Reactant is a nonphenolic compound having at least two hydroxyl groups or salts thereof | 1 |
| 20080300378 | Method For Producing Polycarbonate Copolymer and Polycarbonate Copolymer - A method for producing a PC copolymer with improved productivity is provided. The PC copolymer has a specific structure and the method uses a diester diol-containing monomer as a raw material. The polycarbonate copolymer is produced by reacting a diester diol-containing monomer, a divalent phenol, and a carbonate precursor by interfacial polymerization, wherein the diester diol-containing monomer is a product of reaction between a hydroxybenzoic acid or an esterified product thereof and a polyalkylene glycol, wherein the esterification degree of hydroxyl groups of the polyalkylene glycol is 50 to 90 mol %. | 12-04-2008 |
