Abstract: A purified 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine compound of formula (I): wherein R is a C1-25 hydrocarbyl; each occurrence of R2 and R3 is independently a halogen or a C1-25 hydrocarbyl; p is 0 to 4; and each q is independently 0 to 3; and wherein the purified 2-hydrocarbyl-3-(dihydroxyfluoresceinyl)phthalimidine compound of formula (I) has a purity of greater than 99.4%, as determined by high performance liquid chromatography.

Abstract: The present invention provides a resin composition comprising a thermoplastic resin comprising a constituting unit (A) derived from a compound represented by the following general formula (1), wherein the resin composition comprises an ultraviolet absorber in an amount of 2,000 ppm to 40,000 ppm:

Abstract: To provide a polycarbonate resin having an excellent hue and high heat stability, and a production method and a film thereof. The polycarbonate resin has a carbonate constituent unit represented by the following formula (A), wherein the resin contains a terminal group represented by the following formula (1) or (2) and 0.1 to 500 ppm of an aromatic monohydroxy compound. (In the formula (1), R1 is an alkyl group having 6 to 15 carbon atoms which may be substituted.) (In the formula (2), R2 and R3 are each independently an alkylene group having 1 to 12 carbon atoms which may be substituted. R4 is a hydrogen atom or alkyl group having 1 to 12 carbon atoms which may be substituted. n is an integer of 1 to 20.

Abstract: A polycarbonate resin has a structure represented by a formula (1) and a yellow index (YI) of 30 or less in a solid form,

Abstract: The retardation film of the present invention contains a thermoplastic resin and is constituted of a single layer. A value of wavelength dispersion (R450/R550) that is a ratio of a retardation R450 at a wavelength of 450 nm and a retardation R550 at a wavelength of 550 nm is 0.70 or more and 0.85 or less; and a photoelastic coefficient is 14×10?12 Pa?1 or less.

Abstract: Degradable polycarbonates network based bulk materials are provided. The bulk materials of the present disclosure may be produced having a wide range of tunable mechanical, physical, and thermal properties and are hydrolytically degradable. The bulk materials of the present disclosure may be suitable for the manufacture of a variety of sport fishing equipment or other equipment for water use or that may benefit from hydrolytic degradation in the environment.

Abstract: The present invention relates to a polycarbonate resin containing, in the molecule, a structure represented by the following formula (1): wherein X has a structure represented by any one of the following formula (2) to (4): wherein each of R1 to R4 independently represents a hydrogen atom or an organic group having a carbon number of 1 to 30; the organic group may have an arbitrary substituent, and any two or more members of R1 to R4 may combine with each other to form a ring, which is excellent in heat resistance, transparency, light resistance, weather resistance and mechanical strength.

Abstract: The present invention relates to thermoplastic high-Tg polycarbonates and molding materials which are distinguished by improved thermal properties and improved mechanical properties, in particular by reduced thermal expansion. The present invention furthermore relates to a process for the preparation of these polycarbonates. In particular, this invention relates to polycarbonates which the structural unit which derives from phthalimide of the formula (I) and polycarbonate compositions and molding materials therefrom as well as a process for the preparation of these polycarbonates, and the use thereof, in particular as reflectors and display substrates.

Abstract: In another embodiment, a process of purifying an interfacially polymerized polycarbonate from a feed comprising an aqueous phase and an organic phase comprising an organic solvent, the interfacially polymerized polycarbonate, a catalyst, and ions, can comprise: separating the aqueous phase and the organic phase from the feed, wherein during the separating the feed is subjected to at least one of: energy of less than or equal to 0.5 kJ/kg of feed, a shear rate of less than 150,000 S?1, and centrifugal forces of 100 to 2,000 g-force; to form a purified aqueous phase and a purified organic phase comprising a purified polycarbonate.

Abstract: In an embodiment, a process of purifying a polycarbonate comprises: polymerizing a dihydroxy compound and a carbonate source via an interfacial reaction in the presence of a catalyst to form a product mixture comprising an aqueous phase and an organic phase, wherein the organic phase comprises the polycarbonate, the catalyst, ions, and a solvent having a boiling point Tb; heating the product mixture to greater than or equal to Tb; separating the aqueous phase and the organic phase at a temperature greater than or equal to Tb to form a separated organic phase and a separated aqueous phase; extracting the catalyst from the separated organic phase; and extracting the ions from the separated organic phase; wherein if a centrifuge is used in the extracting of the catalyst, the extracting of the ions, or both, the process further comprises cooling a stream entering the centrifuge to less than Tb.

Abstract: In an embodiment, a process of purifying a polycarbonate from an interfacial polymerization product mixture comprising an aqueous phase and an organic phase comprising a first organic solvent, the polycarbonate, a catalyst, and ions, the process comprises: separating the aqueous phase and the organic phase to form a separated aqueous feed stream and a separated organic stream; extracting the catalyst and the ions from the separated organic stream to form a purified polycarbonate stream and an extracted aqueous feed stream, wherein at least one of the separated aqueous feed stream and the extracted aqueous feed stream comprise an organic portion and an aqueous portion; purifying an aqueous stream comprising one or both of the separated aqueous feed stream and the extracted aqueous feed stream by adjusting a viscosity of the organic portion to be less than or equal to 40 centipoise by adding a second organic solvent to the aqueous stream to form a combined stream; optionally, adjusting a ratio of the aqueous po

Abstract: To provide a polycarbonate resin composition having a high Abbe's number, high strength and excellent stainability. Disclosed is a polycarbonate resin composition prepared by blending a polycarbonate resin (A) prepared by forming carbonate bonds in tricyclo[5.2.1.02,6]decanedimethanol with a diester or phosgene, and a weight-averaged molecular weight (Mw) of the polycarbonate resin (A) being equal to or more than 25,000, and a polycarbonate resin (B) prepared by reacting 2,2-bis(4-hydroxyphenyl)propane and phosgene, and weight-averaged molecular weight (Mw) of the polycarbonate resin (B) being equal to or more than 30,000, wherein a ratio thereof, 100×(A)/((A)+(B)), is from 1 to 99% by weight.

Abstract: Embodiments in accordance with the present invention provide for norbornane-type ballast materials, norbornane-type photoactive compounds derived from such ballast materials and alkali-soluble positive-tone polymer compositions that encompass such norbornane-type photoactive compounds and one of a PBO or PNB resin.

Abstract: Disclosed herein is a polymer blend comprising a first polycarbonate comprising a first structural unit derived from a 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine and a second structural unit derived from a dihydroxy aromatic compound, wherein the second structural unit is not identical to the first structural unit, and a second polycarbonate comprising a structural unit derived from a dihydroxy aromatic compound, wherein the polymer blend has a glass transition temperature of 155 to 200° C.; and wherein a test auricle having a thickness of 3.2 mm and molded from the blend has a haze of less than or equal to 3.0 measured in accordance with ASTM D1003-00. A method of making the polymer blend, and articles prepared from the blend, are also disclosed.

Abstract: The present invention relates to a method of reducing type IV rubber allergy of synthetic rubber latex products caused by chemical residues remaining after manufacture of the synthetic rubber products by reducing levels of chemical residues found for said products, said method comprising the steps of: subjecting said products to a wash in a strong alkaline solution to remove the chemical residues remaining after manufacture of the rubber latex products, and a system for reducing type IV allergenicity of synthetic rubber products caused by chemical residues remaining after manufacture of the synthetic rubber latex products by reducing residual levels of chemical residues found for said products, and a product, such as a glove, manufactured from synthetic rubber latex processed in accordance with the method and/or using the system.

Abstract: A diol from which a resin material having high processability and a high refractive index can be manufactured, a polycarbonate resin and a polyester resin which is a polymer of the diol, and a molded article and an optical element formed of the polymer. The diol is represented by the general formula (1) shown below; the polycarbonate resin and the polyester resin are polymers thereof; and the molded article and the optical element are formed of the polymers, wherein R1 and R2 each independently denote one of a hydrogen atom and an alkyl group having 1 or more and 6 or less carbon atoms; Q denotes one of an oxyethylene group, a thioethylene group and a single bond.

Abstract: A copolycarbonate that is derived from a renewable resource, is excellent in heat resistance, flowability and transparency, and prevented from undergoing a dimensional change by water absorption and coloring during molding as well as a transparent molded article obtained therefrom. The copolycarbonate contains predetermined amounts of a unit (A) constituted of an ether diol residue represented by the formula (1), a unit (B) constituted of a bisphenol residue represented by the formula (2), and a unit (C) constituted of another diol residue, wherein the ratio of terminal groups falls within the ranges of the expressions (i) and (ii).

Abstract: A resin that has high heat resistance, high surface hardness and excellent moldability, and is obtained from a biomass resource, and a molded article thereof. The resin comprises a unit (A) and a unit (B) as the main recurring units, and the molar ratio of the unit (A) to the unit (B) being 5/95 to 95/5.

Abstract: Provided is a producing method for a retardation film with a reverse wavelength dispersion property, which is highly reliable in terms of a small wavelength dispersion change and is low in display unevenness due to a position dependence of a retardation variation. The production method is designed for a retardation film which satisfies the following formulas (1) and (2): 0.7<Re1[450]/Re1[550]<0.97 - - - (1); and 1.5×10?3<?n<6.0×10?3 - - - (2) (where: Re1[450] and Re1[550] represent, respectively, in-plane retardation values thereof as measured by using light of a wavelengths of 450 nm and light of a wavelength of 550 nm, at 23° C.; and ?n represents an in-plane birefringence thereof as measured by using light of a wavelength of 550 nm).

Abstract: Disclosed herein are fluorene derivatives and a lens using the same.

Abstract: A polycarbonate resin which is excellent in heat resistance, boiling water resistance and surface hardness and has a low water absorption coefficient. The polycarbonate resin comprises a unit (A) represented by the following formula and a unit (B) represented by the following formula as main recurring units, wherein the molar ratio (A/B) of the unit (A) to the unit (B) is 30/70 to 99/1. (In the above formula, X is an alkylene group having 3 to 20 carbon atoms or cycloalkylene group having 3 to 20 carbon atoms, R is an alkyl group having 1 to 20 carbon atoms or cycloalkyl group having 3 to 20 carbon atoms, and “m” is an integer of 1 to 10.

Abstract: An object of the present invention is to provide a retardation film succeeded in solving those conventional problems, that is, a retardation film insusceptible to color dropout or color shift even under environment of severe temperature or humidity conditions and capable of being produced by a melt film-forming method. The retardation film of the present invention satisfies the relationships of the following formulae (A) and (B): 0.7<R1(450)/R1(550)<1??Formula (A): |R2(450)/R2(550)?R1(450)/R1(550)|<0.

Abstract: A crosslinkable liquid crystalline polymer that is formed by polymerizing a precursor monomer in the presence of an aromatic crosslinking agent is provided.

Abstract: The polycarbonate resin of the invention includes a first structural unit derived from a dihydroxy compound represented by a general formula (1), a second structural unit derived from a dihydroxy compound represented by a general formula (2), and a third structural unit derived from at least one dihydroxy compound selected from the group consisting of a dihydroxy compound represented by a general formula (3), a dihydroxy compound represented by a general formula (4), a dihydroxy compound represented by a general formula (5), and a dihydroxy compound represented by a general formula (6), and in which the first structural unit derived from a dihydroxy compound represented by the general formula (1) accounts for 18% by mole or more of the polycarbonate resin. The above general formulae (1) to (6) are described in the specification of the present application.

Abstract: The invention is directed to a method for producing poly(arylene) ethers with improved particle size characteristics. The improved particle size characteristics of the polyphenylene ether include one or both of: (i) up to about 50 weight percent of particles smaller than 38 micrometers; and a (ii) mean particle size greater than 100 or more micrometers.

Abstract: A copolycarbonate which is derived from a renewable resource and excellent in heat resistance, flowability and transparency and prevented from undergoing a dimensional change by water absorption and coloring during molding as well as a transparent molded article obtained therefrom. The copolycarbonate comprises predetermined amounts of a unit (A) constituted of an ether diol residue represented by the following formula (1), a unit (B) constituted of a bisphenol residue represented by the following formula (2), and a unit (C) constituted of another diol residue, wherein the ratio of terminal groups falls within the ranges of the following expressions (i) and (ii). (i) 0.001<total number of hydroxyl groups derived from the unit (A) and the unit (C)/total number of all terminal groups<0.3 (ii) 0.02<number of phenolic hydroxyl groups derived from the unit (B)/total number of all terminal groups<0.

Abstract: In an embodiment, a method of processing a polymer comprises: mixing polymer and solid carbon dioxide; introducing the polymer and solid carbon dioxide mixture to a hopper of a vented extruder; plasticizing the mixture to form a polymer melt with dissolved carbon dioxide; venting carbon dioxide as a gas before the die exit; and extruding the polymer melt through a die. In an embodiment, a method of making an article comprises: introducing a polymer powder to an extruder; introducing solid carbon dioxide powder to the extruder at the hopper; plasticizing and extruding the polymer and solid carbon dioxide mixture; venting the solid carbon dioxide before the die exit; extruding the polymer melt through a die to form pellets; and injection molding the polymer pellets without solid carbon dioxide to form molded articles.

Abstract: Disclosed herein are indane bisphenol monomer units, and polymers derived from such monomer units. Also disclosed herein are blends including such polymers, articles made from such polymers and blends, methods of using such monomers, polymers, and blends, and processes for preparing such monomers, polymers, and blends.

Abstract: A resin which has high heat resistance, high surface hardness and excellent moldability and is obtained from a biomass resource and a molded article thereof. The above polycarbonate resin comprises a unit (A) represented by the following formula: and a unit (B) represented by the following formula: as the main recurring units, the molar ratio of the unit (A) to the unit (B) being 5/95 to 95/5.

Abstract: A copolycarbonate-polyester, comprising units of formula wherein at least 60 percent of the total number of R1 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic or alicyclic radicals; units of formula wherein T is a C7-20 divalent alkyl aromatic radical or a C6-20 divalent aromatic radical, and D is a divalent C6-20 aromatic radical; and units of the formula wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl group, each c is independently 0 to 4, and T is as described above. A method of making a copolycarbonate-polyester is also disclosed.

Abstract: A method of purifying a capped poly(phenylene ether) includes mixing a poly(phenylene ether) capping reaction mixture comprising a capped poly(phenylene ether), a capping agent, a capping byproduct, a capping catalyst, and a poly(phenylene ether) solvent, and first washing solvents comprising a C1-C4 alkanol and water to form a first liquid phase comprising the capped poly(phenylene ether) and poly(phenylene ether) solvent, and a second liquid phase comprising C1-C4 alkanol and water; and separating the first liquid phase from the second liquid phase. Capped poly(phenylene ether) having reduced levels of residual capping agent, capping byproduct, and capping catalyst is produced from poly(phenylene ether) capping reaction mixtures by this method.

Abstract: A polycarbonate resin having at least one terminal group which is represented by formula (1), and a resin composition and an optical material comprising the polycarbonate resin are disclosed. In the formula, R1-R9 each independently represent a hydrogen atom, halogen atom or an alkyl group. X1 represents a direct bond or alkylene group.

Abstract: Disclosed is a new method and compositions from the method consisting of block copolycarbonate/phosphonates that exhibit an excellent combination of flame resistance, hydrolytic stability, high Tg, low melt viscosity, low color and high toughness. Also disclosed are polymer mixtures or blends comprised of these block copolycarbonate/phosphonate compositions and commodity and engineering plastics and articles produced therefrom. Further disclosed are articles of manufacture produced from these materials, such as fibers, films, coated substrates, moldings, foams, adhesives and fiber-reinforced articles, or any combination thereof.

Abstract: Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, a polysiloxane unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit, polysiloxane unit, and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit different from the isosorbide unit is derived from an aliphatic oligomer having a molecular weight of 900 to 4000, and the calculated bio-content is greater than or equal to 40 weight percent, based on the total weight of the polycarbonate polymer.

Abstract: An optical film comprising a copolycarbonate composed of 25 to 90 mol % of unit (A) of the following formula, and 10 to 75 mol % of unit (B) of the following formula, wherein the substituents are defined herein, and the optical film satisfies the following expression (1), R(450)<R(550)<R(650) (1), wherein R(450), R(550) and R(650) are in-plane retardation values of the film at wavelengths of 450 nm, 550 nm and 650 nm. The optical film exhibits a desired chromatic dispersion, low photoelasticity and excellent melt processability.

Abstract: The present invention relates to copolycarbonates having improved surface hardness, processes for the preparation thereof and the use thereof for the production of blends, shaped articles and extrudates.

Abstract: The polycarbonate resin of the invention includes a first structural unit derived from a dihydroxy compound represented by a general formula (1), a second structural unit derived from a dihydroxy compound represented by a general formula (2), and a third structural unit derived from at least one dihydroxy compound selected from the group consisting of a dihydroxy compound represented by a general formula (3), a dihydroxy compound represented by a general formula (4), a dihydroxy compound represented by a general formula (5), and a dihydroxy compound represented by a general formula (6), and in which the first structural unit derived from a dihydroxy compound represented by the general formula (1) accounts for 18% by mole or more of the polycarbonate resin. The above general formulae (1) to (6) are described in the specification of the present application.

Abstract: Disclosed is a method for producing a purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I) wherein R1 is hydrogen or a C1-25 hydrocarbyl group and R2 is a hydrogen, a C1-25 hydrocarbyl group, or a halogen, and wherein the method comprises dissolving a crude phthalimidine compound in an aqueous base solution; precipitating the dissolved, crude phthalimidine compound from the aqueous base solution by adding an acid in an amount effective to lower the pH of the solution to 9.0 to 12.0, to provide a semicrude phthalimidine compound; and isolating the semicrude phthalimidine compound from the aqueous base solution, to provide the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine of formula (I), and having a phenolphthalein compound content of less than 2,500 ppm, based on the weight of the purified 2-aryl-3,3-bis(4-hydroxyaryl)phthalimidine.

Abstract: A polycarbonate resin which has a high biogenic matter content, excellent moisture absorption resistance, heat resistance, heat stability and moldability, and high surface energy, as well as a production process thereof. The polycarbonate resin contains 30 to 100 mol % of a unit represented by the following formula (1) in all the main chains and has (i) a biogenic matter content measured in accordance with ASTM D6866 05 of 25 to 100%, (ii) a specific viscosity at 20° C. of a solution prepared by dissolving 0.7 g of the resin in 100 ml of methylene chloride of 0.2 to 0.6 and (iii) an OH value of 2.5×103 or less.

Abstract: A copolycarbonate-polyester, comprising units of formula wherein at least 60 percent of the total number of R1 groups are divalent aromatic organic radicals and the balance thereof are divalent aliphatic or alicyclic radicals; units of formula wherein T is a C7-20 divalent alkyl aromatic radical or a C6-20 divalent aromatic radical, and D is a divalent C6-20 aromatic radical; and units of the formula wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or phenyl group, each c is independently 0 to 4, and T is as described above. A method of making a copolycarbonate-polyester is also disclosed.

Abstract: Methods for preparing a poly(ether carbonates) of the formula HO—[(CH2CH2—O)n—CO2]m—(CH2CH2—O)n—H are provided. The method comprises polymerizing an activated oligomer of the formula of H—O—(CH2CH2—O)n—CO2—Z, where Z is reactive leaving group.

Abstract: Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit and aliphatic unit are each carbonate, or a combination of carbonate and ester units and the aliphatic unit is derived from an aliphatic oligomer having a molecular weight of 900 to 4000.

Abstract: The present invention relates to a method for producing a polycarbonate, containing melt-polycondensing a diol component containing a compound represented by the following formula (1) with a fluorine-containing carbonate: here, R1 and R2 are each independently hydrogen atom, C1-10 alkyl group, C6-10 cycloalkyl group, or C6-10 aryl group, and two of R1's and two of R2's may mutually be the same or different; X is C1-6 alkylene group, C6-10 cycloalkylene group, or C6-10 arylene group, and a plurality of X's may be the same or different; and m and n are each independently an integer of from 1 to 5.

Abstract: A polycarbonate copolymer includes a repeating unit represented by a formula (1) below and a molar copolymer composition represented by Ar2/(Ar1+Ar2) in a range of 25 mol % to 50 mol %. In the formula (1): Ar1 and Ar2 represent a divalent aromatic group; a chain end is terminated by a monovalent aromatic group or a monovalent fluorine-containing aliphatic group; and n represents an average repeating number of an Ar1 block and is a numeral of 1.0 to 3.0, provided that Ar1 and Ar2 are not the same.

Abstract: Provided is to provide a photoelectric conversion device including an organic compound layer which contains polymer (a) having partial structures represented by the following formulae (1) and (2) respectively. In the formula, R1, R2, R3 each independently represent a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, X and Y each independently represent a divalent organic group having from 1 to 20 carbon atoms, a represents 0 or 1, and CT represents an organic group having a charge transportable skeleton.

Abstract: The object of this invention is to provide a copolycarbonate that is excellent in heat resistance, thermal stability and moldability and that uses a renewable resource as a raw material. This invention is a copolycarbonate including 50 to 99 mol % of a carbonate constituent unit (1) of the following formula and 50 to 1 mol % of a carbonate constituent unit (2) derived from an aliphatic diol having a boiling point of 180° C. or higher under reduced pressure of 4×10?3 MPa.

Abstract: A copolycarbonate having a high refractive index, a small birefringence, high processability and excellent transparency and an optical lens formed from the copolycarbonate. The copolycarbonate has a total content of a unit represented by the following formula (I) and a unit represented by the following formula (II) of not less than 80 mol % based on the total of all the recurring units, the molar ratio of the unit represented by the formula (I) to the unit represented by the formula (II) being in the range of 98:2 to 35:65. (wherein each of R1, R2, R3 and R4 is independently a hydrogen atom, alkyl group having 1 to 20 carbon atoms or the like. X is an alkylene group having 2 to 8 carbon atoms or the like. Each of m and n is independently an integer of 1 to 10.) (wherein each of R5, R6, R7 and R8 is independently a hydrogen atom, alkyl group having 1 to 20 carbon atoms or the like.

Abstract: Provided are: a urethane-based polycarbonate resin, including a repeating unit represented by the general formula [1], and a repeating unit represented by the general formula [2], in which the urethane-based polycarbonate resin has high wear resistance by virtue of a strong hydrogen bond between urethane groups; and an electrophotographic photoconductor, including a photosensitive layer provided on a conductive substrate, in which the electrophotographic photoconductor includes the above-mentioned polycarbonate resin as a component of the photosensitive layer, has high wear resistance, and maintains an excellent electrophotographic characteristic over a longtime period: [Chem. 1] (Ar2 represents a group having a divalent aromatic group, and Ar1 represents a divalent aromatic group-containing group having a specific structure).

Abstract: The object of this invention is to provide an optical film formed of a copolycarbonate having a desired chromatic dispersion and low photoelasticity and having excellent melt processability.

Abstract: A diol from which a resin material having high processability and a high refractive index can be manufactured, a polycarbonate resin and a polyester resin which is a polymer of the diol, and a molded article and an optical element formed of the polymer. The diol is represented by the general formula (1) shown below; the polycarbonate resin and the polyester resin are polymers thereof; and the molded article and the optical element are formed of the polymers, wherein R1 and R2 each independently denote one of a hydrogen atom and an alkyl group having 1 or more and 6 or less carbon atoms; Q denotes one of an oxyethylene group, a thioethylene group and a single bond.