Abstract: A polycarbonate of the present invention includes repeating units represented by, Formula 1, Formula 2 and Formula 3, respectively, and thus, may have excellent scratch resistance, chemical resistance and impact property.

Abstract: The invention provides halogen-free, bisphenol triazole resins and polymers having exceptional flame retarding properties, related compositions and methods of making and use thereof.

Abstract: A resin composition containing: an ester compound including a carboxylic acid ester obtained by using (1) a monohydric alcohol having an alkyl group having 1 to 4 carbon atoms; (2) a dicarboxylic acid having an alkylene group having 2 to 4 carbon atoms; and (3) a dihydric alcohol having an alkylene group having 2 to 6 carbon atoms, the ester compound having an acid value of 1.00 mgKOH/g or less, a hydroxyl value of 5.0 mgKOH/g or less, and a number-average molecular weight of from 300 to 700; and an aliphatic polyester. Since the resin composition of the present invention inhibits the generation of volatile compounds, the resin composition can be suitably used in various industrial applications, such as daily sundries, household electric appliance parts, and automobile parts.

Abstract: An fluorinated polyester compound is disclosed. The fluorinated polyester compound can be made by combining ingredients comprising a hydroxyl terminated polyphenyl ether; a carboxylic acid terminated perfluoropolyether; an acid catalyst; and a solvent. A coating solution comprising the fluorinated polyester compound and a method of coating a substrate therewith are also disclosed.

Abstract: 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: wherein Ar is a divalent aromatic hydrocarbon group or the like; R1 is CX1Y1R4; R2 is a hydrogen atom or CX2Y2R5; R3 is a hydrogen atom or CX3Y3R6; R7 is a perfluoroalkylene group having 1 to 5 carbon atoms; X1 to X3 are a hydrogen atom, a fluorine atom or Rf; Y1 to Y3 are a fluorine atom or Rf; R4 to R6 are a fluorine atom, Rf, ORf or the like; and Rf is a fluoroalkyl group having 1 to 4 carbon atoms.

Abstract: The present invention relates to biodegradable polymers (e.g., polyesters and polyester amides) derived from functionalized biologically active compounds that can provide site specific delivery of bioactive compounds upon biodegradation in a controlled manner.

Abstract: 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: wherein Ar is a divalent aromatic hydrocarbon group or the like; R1 is CX1Y1R4; R2 is a hydrogen atom or CX2Y2R5; R3 is a hydrogen atom or CX3Y3R6; R7 is a perfluomalkylene group having 1 to 5 carbon atoms; X1 to X3 are a hydrogen atom, a fluorine atom or Rf; Y1 to Y3 are a fluorine atom or Rf; R4 to R6 are a fluorine atom, Rf, ORf or the like; and Rf is a fluoroalkyl group having 1 to 4 carbon atoms.

Abstract: An fluorinated polyester compound is disclosed. The fluorinated polyester compound can be made by combining ingredients comprising a hydroxyl terminated polyphenyl ether; a carboxylic acid terminated perfluoropolyether; an acid catalyst; and a solvent. A coating solution comprising the fluorinated polyester compound and a method of coating a substrate therewith are also disclosed.

Abstract: The present invention relates to polycarbonates comprising imide-containing aryl mono- or dihydroxy compounds as chain terminators and, respectively, monomer units, and also to compositions comprising the said polycarbonates, to their use for the production of mouldings, and to mouldings obtainable therefrom.

Abstract: A method for obtaining a composition of an aromatic polyamide containing para-phenylene terephthalamide and 2-(p-phenylene)benzimidazole terephthalamide units, the method including copolymerizing: i) a mole % of para phenylenediamine; ii) b mole % of 5(6)-amino-2-(p-aminophenyl)benzimidazole; and iii) 90-110 mole % of terephthaloyl dichloride in a mixture of N-methyl pyrrolidone and containing c wt. % of calcium chloride, wherein c is within the range from 1 to 20, and wherein the ratio a:b ranges from 1:20 to 20:1, a+b is 100 mole %, and i), ii), and iii) together comprise 1-20 wt. % of the mixture, wherein the product b·c is at least 50 and less than 215 and that the composition is a crumb with a relative viscosity ?rel of at least 4, wherein the crumb is defined as non-sticky particles at least 95% of which having an average diameter of 0.7-15 mm.

Abstract: 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?6), and has a ratio [(a)+(b)]/(c) of the sum of the amount (a) of terminal hydroxyl group and the amount (b) of terminal acetyl group to an amount (c) of terminal carboxyl group in a range of 1.05 to 2.00.

Abstract: Poly(aryleneethynylene) polymers for exfoliating and dispersing/solubilizing nanomaterial are provided herein. The poly(aryleneethynylene) polymers have unit monomer portions, each monomer portion having at least one electron donating substituent thereby forming an electron donor monomer portion, or at least one electron withdrawing substituent thereby forming an electron accepting monomer portion. Such polymers exfoliate and disperse nanomaterial without presonication of the nanomaterial.

Abstract: 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.

Abstract: A polyester resin which includes acid components having 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; polyolefin polyol having 1,800 to 2,500 number average molecular weight and hydroxyl value of 40 to 55 KOHmg/g; and wax having melting point of 80 to 110, wherein the amount of the polyolefin 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. Also disclosed is a method for preparing polyester resin by (a) carrying out an esterification reaction or an ester exchange reaction with the acid components, the alcohol components, and the polyolefin polyol; and (b) carrying out a polycondensation reaction for reaction product of the esterification or ester exchange reaction in the presence of the wax.

Abstract: According to the present invention, a polymer is obtained by polycondensation of a fluorinated dicarboxylic acid derivative of the general formula (M-1) or an acid anhydride of the fluorinated dicarboxylic acid with a polyfunctional compound having two to four reactive groups corresponding in reactivity to carbonyl moieties of the fluorinated dicarboxylic acid derivative or acid anhydride. [Chem. 134] AOCF2C-Q-CF2COA???(M-1) In the above formula, Q represents a divalent organic group having a substituted or unsubstituted aromatic ring; and A and A? each independently represent an organic group. This polymer exhibits a sufficiently low dielectric constant for use as a semiconductor protection film and has the capability of forming a film at a relatively low temperature of 250° C. or lower.

Abstract: To provide a curable composition, from which a cured film having a low dielectric constant can be obtained and which is excellent in providing embedding planarity at the time of film formation. A curable composition comprising a fluorinated polyarylene prepolymer (A) having a crosslinkable functional group, and a compound (B) having a molecular weight of from 140 to 5,000, having a crosslinkable functional group and having no fluorine atoms.

Abstract: The present invention provides carboxy-terminated oligomeric polyester compositions useful in the preparation of “weatherable” polymeric materials, for example weatherable copolyestercarbonates. In one aspect the present invention provides an oligomeric polyester composition comprising structural units derived from at least one diacid, at least one diaryl carbonate and at least one diol. The structural units derived from the diacid are present in a molar excess of from about 10% to about 40% based on a ratio of moles of diacid-derived structural units to moles of diol-derived structural units present in the oligomeric polyester composition. The oligomeric polyester composition is further characterized by the presence of at least some phenoxy end groups.

Abstract: A process for preparing polyarylate wherein a bivalent phenol compound having the structure of Formula 1 and an aromatic dicarboxylic acid halogen compound react to prepare a polyarylate, and wherein a nonionic surface-active agent is added. This decreases residual salts and improves the transmittance and the heat-resistance. In Formula 1, R1, R2, R3 and R4 denote the same as illustrated in the description.

Abstract: An aromatic liquid-crystalline polyester composition is provided, which comprises at least one compound selected from an aliphatic carboxylate aryl ester and an aromatic carboxylic anhydride; an aromatic liquid-crystalline polyester; and a solvent containing at least 30% by weight of a halogen-substituted phenol compound. Using the composition, an aromatic liquid-crystalline polyester film with a low viscosity in melting state can be obtained.

Abstract: The present invention is generally directed to a hole transport polymer comprising a polymeric backbone having linked thereto a plurality of substituents comprising fused aromatic ring groups, with the proviso that the polymer does not contain groups selected from triarylamines and carbazole groups. It further relates to devices that are made with the polymer.

Abstract: An acid anhydride of the formula (4), and a polyimide using the acid anhydride, wherein anhydrides are substituted at sites 3 or sites 4, which acid anhydride is obtained from, as a raw material, a bifunctional phenylene ether oligomer having a number average molecular weight of 500 to 3,000, represented by the formula (1).

Abstract: Facially amphiphilic polymers and articles made therefrom having biocidal surfaces are disclosed. The polymers can inhibit the growth of microorganisms in contact with the surface or in areas adjacent to said biocidal surface. There is also disclosed a method to identify and optimize the facial amphiphilicity of polyamide, polyester, polyurea, polyurethane, polycarbonate and polyphenylene polymers. Utility as a contact disinfectant is disclosed.

Abstract: The present invention provides a method for easily obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises mixing a solution of a polyhydroxyalkanoate in a good solvent with a poor solvent at 50 to 130° C. to precipitate a polyhydroxyalkanoate.

Abstract: A polycarbonate resin composition comprising 100 parts by weight of a polycarbonate resin (component A), 0.01 to 10 parts by weight of at least one ultraviolet light absorber (component B) selected from the group of a specific cyclic imino ester, and 0.01 to 1 part by weight of a fatty acid ester compound (component C) which is an ester of a polyhydric alcohol and an aliphatic carboxylic acid and has a molecular weight of 500 to 2,000 g/mol, as well as molded articles thereof. The polycarbonate resin composition provides molded articles having excellent transparency, color and resistance to ultraviolet radiation, is excellent in heat stability at the time of molding and releasability and fully suppresses the production of a deposit on a metal mold.

Abstract: The present invention provides a method for conveniently obtaining a biodegradable polyhydroxyalkanoate by a solvent extraction method. A method for producing a polyhydroxyalkanoate crystal comprises precipitating a polyhydroxyalkanoate crystal using a monohydric alcohol having 4 to 10 carbon atoms as a extraction solvent, keeping a polyhydroxyalkanoate solution containing 0.1 to 10% by weight of water relative to the total amount of the solution warm at 70° C. or higher, and cooling the solution to below 70° C.

Abstract: The present invention relates to a maleimide group-containing polymer particle containing a crosslinked polymer particle containing a group represented by the following formula (1) and to a method of producing the maleimide group-containing crosslinked polymer particle by reacting hydroxymethylmaleimide with a hydroxyl group-containing polymer particle obtained by introducing a polyethylene glycol into a crosslinked polymer particle: wherein n denotes an integer of 1 or more.

Abstract: An aromatic liquid-crystalline polyester having a small dielectric loss in a wide frequency region is provided. An aromatic liquid-crystalline polyester is provided that can manufacture a film having a small volume expansion by heating. An aromatic liquid-crystalline polyester substantially comprising a repeating structural unit originating in 2-hydroxy-6-naphthoic acid 30 to 80 mol %, a repeating structural unit originating in aromatic diol 35 to 10 mol %, and a repeating structural unit originating in aromatic dicarboxylic acid 35 to 10 mol %.

Abstract: The present invention refers to a polymeric optical film the polymer of the polymeric optical film consisting essentially of one or more polyarylates having repeating units represented by the general structure: wherein A represents one or more different bisphenolfluorene radicals having the general formula (I): wherein R1 and R2 independently represent an alkyl group, a halogen atom, an alkoxy group, an acyl group, a phenyl group or a nitrile group, with the proviso that R1 and R2 are not both an alkyl group; R3, R4, R5 and R6 represent a hydrogen atom, an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group, a nitro group, or a nitrile group, with the proviso that when R1 and R2 are both bromide atoms, at least one of R3, R4, R5 and R6 is different from hydrogen atom; B represents one or more different dicarboxy radicals having the formula: wherein X is a divalent aromatic hydrocarbon group having from 6 to 20 carbon atoms, and n is the number of the repeating units which build

Abstract: The present invention provides a liquid-crystalline polyester resin which comprises monomer units derived from 2-hydroxy-3-naphthoic acid and/or 2-hydroxynaphthalene-3,6-dicarboxylic acid in an amount of 1-5000 mmol % based on the total monomer components of the resin and an alkaline metal compound in an amount of 10-3000 ppm as alkaline metal based on the total monomer components of the resin. The liquid-crystalline polyester resin of the present invention has good colorability, improved heat resistance and good mechanical properties.

Abstract: A batch type apparatus for producing a liquid crystalline polymer includes a reactor, a first gas-pressurizing unit, a die-head, a shut-off valve, and a die-plate. The reactor produces a liquid crystalline polymer capable of forming an anisotropic melt phase. The reactor has a discharge port at a lower portion thereof. The first gas-pressurizing unit is attached to the reactor for discharging under pressure the liquid crystalline polymer by use of an inert gas. The die-head includes, at one end portion thereof, a discharge valve which opens and closes the discharge port; at a middle portion thereof, an internal chamber which communicates with the discharge port and is heated and regulated from the peripheral surface thereof; and at the other end portion thereof, an opening which forms an end portion of the internal chamber. The shut-off valve is connected to the other end portion of the die-head and capable of opening and closing the opening. The die-plate is disposed at the opening of the shut-off valve.

Abstract: The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: wherein A represents one or more different bisphenolfluorene radicals having the general formula (I):  wherein R1 and R2 independently represent an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group or a nitrile group, with the proviso that R1 and R2 are not both an alkyl group; R3, R4, R5 and R6 represent a hydrogen atom, an alkyl group, a halogen, an alkoxy group, an acyl group, a phenyl group, a nitro group, or a nitrile group; B represents one or more different dicarboxy radicals having the formula:  wherein X is a divalent hydrocarbon group having from 1 to 20 carbon atoms, and n is the number of the repeating units which build up the polymer and is a positive integer higher than 20.

Abstract: A polyester having less than 50 hydrogen-carbon bonds per 1000 molecular weight units exhibits very low optical loss in the range of wavelengths commonly used for optical communication, and exhibits other physical properties suitable for use as a waveguide core material and/or a waveguide cladding material in optical fibers and/or planar optical devices.

Abstract: This invention relates to a process for the preparation of aromatic polyesters which comprises polymerization of a aromatic dicarboxylic acid substituted with a polar group weight percentage in the range of 20 to 75 with a substituted aromatic diol weight percentage in the range of 25 to 78 by known method herein described.

Abstract: The present invention refers to an optical film comprising one or more polyarylates having at least some units represented by the general structure: 1

Abstract: Provided is a liquid crystalline polymer which is obtained by copolymerizing at least one polyfunctional aromatic monomer selected from the group consisting of the compounds represented by the formulae (I), (II) and (III) below with at least one polymerizable monomer. The liquid crystalline polymer of the present invention is excellent in heat resistance, molding properties, flow properties and mechanical properties, especially it provide molded article with improved weld strength.

Abstract: There is disclosed a (2,5-disubstituted-1,4-phenylene oxide) block copolymer which comprises one or more block structural units represented by formula (I) and at least one particular divalent structural unit in a molecule. There is also disclosed a (2,5-disubstituted-1,4-phenylene oxide) graft polymer which comprises one or more structural units of formula (IV), or three or more of structural unit of formula (IV) and particular divalent structural unit, in a molecule. (wherein R1 represents an unsubstituted or substituted hydrocarbon group, and the two R1s may be the same or different; a represents a number average degree of polymerization and is 5 or more; R4 represents a trifunctional unsubstituted or substituted hydrocarbon group; U represents —CO—, —OCO—, or —NHCO—; and f is 1 or 0.

Abstract: A wholly aromatic copolyester having repeating units of the formula: wherein Ar1 is wherein Q is selected from the group consisting of —H, —CH3, —CF3, —Cl, —Br, and —C6H5; wherein Ar2 is selected from the group consisting of wherein X is selected from the group consisting of —Br, —Cl, —CH3 and —C6H5; wherein Ar3 is wherein Ar4 is selected from the group consisting of wherein m has a value of 0.05 to 0.95 and n has a value of 100-m, is characterized by accessible nematic-isotropic transition temperatures providing outstanding orientational order and mechanical properties.

Abstract: The invention relates to optical elements comprised of an optical isotropic completely aromatic polyester with a glass transition temperature Tg≧180° C.

Abstract: The invention relates to a fluorine-containing polybenzoxazole including a structural unit represented by the general formula (1): 1

Abstract: A polyimide represented by the following general formula (1); wherein l, m, and n represent not the order of each repeating unit, but the numbers of each repeating unit existing in the molecule, E1 is a photosensitive group, E2 is a group comprising an alkyl group having 2 to 20 carbon atoms, —A(—E1)—, —A(—E2)—, and B each are a divalent organic group, X and Y each are a tetravalent organic group, X, Y, A, B, E1 and E2 may be identical or different among the repeating units, 1 is an integer of 1 or more, m and n each are an integer of 0 or more. The polyimide and polyimide compositions comprising it has thermoreactivity as well as photoreactivity and photosensitivity.

Abstract: A high-performance anti-reflective coating which highly absorbs a given light, e.g., deep ultraviolet rays, tenaciously adheres to substrates upon coating formation, is satisfactory in covering, and eliminates the influence of standing waves in the production of integrated circuits; novel light-absorbing polymers for forming the anti-reflective coating; and a process for producing the polymers. One of the polymers is produced by esterifying a copolymer comprising carboxylic anhydride groups and/or dicarboxylic acid groups such as maleic acid as basic recurring units with a hydroxylated aromatic chromophore. The unreacted carboxylic acid groups or acid anhydride groups remaining in the esterified light-absorbing polymer may be amidated and/or imidized with an aminated aromatic compound.

Abstract: The present invention pertains to novel synthetic polymers which contain bulky carboxylic monomer units which contain minimally two aryl rings linked by one or more linking groups such that rotation of the aryl rings relative to each other is structurally prohibited, thus being a rigid bulky monomer unit, or sterically disfavored, thus being a rotationally hindered bulky monomer, and which contain at least one flexibilizing monomer which contains a six- to twelve-membered, conformable carboxylic structure. The bulky and flexible monomer units are linked by suitable linking groups to form polymers which exhibit high Tg but which exhibit ductile behavior. The polymers have optical properties suitable for use as optical disks and other optical elements.

Abstract: An amorphous copolyester having a maximum melt viscosity at 1 radian/second and at about 260 to about 290° C. of about 12000 poise, a glass transition temperature ranging from about 88° C. to about 120° C., and an inherent viscosity of at least about 0.6 dl/g. The amorphous copolyesters comprise the reaction product of a diol component and a dicarboxylic acid component. The diol component comprises residues of from about 5.0 to about 50 mole % of 2,2′-(sulfonylbis (4,1-phenyleneoxy))-bis(ethanol) which has the following chemical formula: and from about 50 to about 95 mole % of a mixture of at least two diols selected from the group consisting of ethylene glycol, neopentyl glycol, 1,3-propanediol, 1,4-butanediol, 1,4-cyclohexanedimethanol, and mixture thereof. The dicarboxylic acid component comprises residues of terephthalic acid, isophthalic acid, 1,4-cyclohexandedicarboxylic acid, 2,6-naphthalene dicarboxylic acid and mixtures thereof.

Abstract: A polymer system having repeating units of the formula: ##STR1## wherein A is --H or --OH, x has a value of 0.5 to 1.0 and y has a value of 1.0-x, exhibits a high glass transition temperature (T.sub.g) and a low dielectric constant. The polymer system is useful in the area of microelectronic packaging.

Abstract: Disclosed is a process which comprises reacting a polymer of the general formula ##STR1## or ##STR2## wherein x is an integer of 0 or 1, A is one of several specified groups, such as ##STR3## B is one of several specified groups, such as or mixtures thereof, and n is an integer representing the number of repeating monomer units, with a halomethylethyl ether, a hydrohalic acid, and acetic acid in the presence of a halogen-containing Lewis acid catalyst, thereby forming a halomethylated polymer.

Abstract: There are provided liquid crystalline polyesters comprising 4'-hydroxy-4-stilbenecarboxylic acid type units, dicarboxylic acid units acting as a mesogen such as 4,4'-stilbenecarboxylic acid and catechol units as essential ingredients, and a liquid crystalline polyester composition comprising said polyesters and optically active liquid crystalline polyesters consisting essentially of 4,4'-stilbenedicarboxylic acid type units and aliphatic diol units having asymmetric carbons.

Abstract: A low birefringent organic optical component prepared from a resin consisting essentially of one or more repetitive structural units selected from the group consisting of structures represented by general formula (1); ##STR1## wherein A is either of the groups below. ##STR2## The organic optical component can exhibit excellent transparency, heat resistance and mechanical strength as well as a low birefringence. Also provided is a novel aromatic polyamide with a low permitivity and excellent transparency, processability and thermal stability, besides excellent heat resistance inherent in an aromatic polyamide.

Abstract: Phthalonitrile thermoset polymers and composites having flame resistance formed by combining a phthalonitrile monomer in the melt stage with a halogen-containing aromatic amine curing agent. The halogen-containing aromatic amine curing agent is selected from the group consisting of aromatic amine curing agents having the general formula:NH.sub.2 --(Ar.sup.2 O--).sub.y Ar.sup.1 --X--Ar.sup.1 (--OAr.sup.2).sub.y --NH.sub.2wherein Ar.sup.1 and Ar.sup.2 are substituted or unsubstituted aromatic groups, y is 0 or greater, and X is --C(CF.sub.3).sub.2 -- and aromatic amine curing agents having the general formula:NH.sub.2 --(Ar.sup.4 O--).sub.u Ar.sup.3 --Z--Ar.sup.3 (--OAr.sup.4).sub.u --NH.sub.2wherein Z is a connecting bond or a linking group other than oxygen or --C(CF.sub.3).sub.2 --, u is 0 or greater, and Ar.sup.3 and Ar.sup.4 are aromatic groups and wherein either Ar.sup.3 or Ar.sup.1 or both Ar.sup.3 and Ar.sup.4 are substituted with at least one halogen atom or halo-substituted alkyl group.

Abstract: In a process for the preparation of poly-o-hydroxyamides and poly-o-mercaptoamides, a bis-o-aminophenol or a bis-o-aminothiophenol is reacted with a dicarboxylic acid derivative with the following structure: ##STR1## where D=O, S, or NH, and where R* is the parent body of the dicarboxylic acid and at least one of the groups R.sup.1 through R.sup.5 is F or CF.sub.3.

Abstract: A resin for coating formation which comprises a polyarylate comprising 2,2-bis(3-methyl-4-hydroxyphenyl)propane units and a divalent carboxylic acid component comprising 10 to 90 mol % of terephthalic acid units and 90 to 10 mol % of isophthalic acid units, having an inherent viscosity measured in 1,1,2,2-tetrachloroethane at a concentration of 1 g/dl at 25.degree. C. of 0.85 or more, and having a carboxyl value of 20 mol/ton or less. Also disclosed is a process for producing the resin by interfacial polymerization, using a quaternary ammonium salt or a quaternary phosphonium salt having at least 3 alkyl groups each having at least 3 carbon atoms as a catalyst.