Abstract: A process for producing a phenylene ether oligomer comprising oxidative polymerization of a specific bivalent phenol compound and a specific monovalent phenol compound in an aromatic hydrocarbon solvent, wherein the aromatic hydrocarbon solvent of a phenylene ether oligomer solution obtained after the termination of the polymerization is replaced with a water-soluble organic solvent having a boiling point higher than that of the aromatic hydrocarbon solvent and the resultant phenylene ether oligomer solution is brought into contact with water, thereby precipitating the phenylene ether oligomer as particles.

Abstract: A multilayer article comprises a substrate layer, and a coating layer in contiguous superposed contact with the substrate layer, the coating layer comprising a thermostable, weatherable polymer comprising structural units derived from at least one 1,3-dihydroxybenzene moiety, at least one aromatic dicarboxylic acid moiety, at least one bisphenol moiety, and at least one soft-block moiety derived from a siloxane oligomer, in which the multilayer article comprises the substrate layer and the coating layer, or the substrate layer with coating layers on each side of the substrate layer.

Abstract: This invention is to provide a dope that has excellent formability and can be formed into a fiber, a film, pulp-shaped particles and the like by a wet method. This invention is also to provide a process for the production of a fiber excellent in heat resistance, strength and elastic modulus. This invention provides a dope and a process for the production of a fiber from the dope, the dope including a polyamide and a basic solvent, the polyamide containing a recurring unit of the following formula (I), wherein Ar1 represents at least one substituent selected from the group consisting of and having an inherent viscosity of 1.0 or more, the dope has a polyamide concentration of over 10% by weight but not more than 25% by weight and exhibits optical anisotropy at 50° C.

Abstract: A melt polymerized polycarbonate comprising repeat units in the polycarbonate derived from the melt polymerization of monomers (II) and/or (III), monomer (IV), and optionally monomer (VIII), wherein monomers (II) and (III) are diaryl dihydroxy compounds, monomer (IV) is a sterically hindered dihydroxy compound, and monomer (VIII) is a non-sterically hindered dihydroxy diaryl compound; wherein the mole ratio of repeat units in the polycarbonate derived from monomers [(II)+(III)]:(IV):(VIII) is 15-70:1-85:0-50, the sum of the mole percent of repeat units in the polycarbonate derived from monomers [(II)+(III)]+(IV) is greater than or equal to 50 mole %, and the sum of the mole percent of units in the polycarbonate derived from monomers [(II)+(III)]+(IV)+(VIII) is 100 mole %; and wherein the polycarbonate has an L* value that is at least 1 L* unit value higher than the same polycarbonate in which monomer (IV) is replaced by bisphenol A.

Abstract: The present invention relates to a solid acid catalyst for the production of polyester which enables the production of a metal-free polyester resin containing no residual catalyst, exhibits favorable utility efficiency in the production, exhibits extremely high selectivity for the polyesterification reaction with the amount of by-products being below the limit of detection, and is able to be isolated, recovered and reused. In other words, the present invention relates to a solid acid catalyst for the production of polyester, obtained by supporting a metal oxide (B) on a support (A) formed from a metal oxide, wherein said support (A) formed from a metal oxide is a zirconia, said metal oxide (B) is a molybdenum oxide, and a Hammett acidity function (H0) for said catalyst is within a range from ?3 to ?9, and also relates to a process for producing the solid acid catalyst and a process for producing a polyester that uses the catalyst.

Abstract: A process for producing a polyester using a catalyst, which catalyst enables producing a polyester excellent in color tone and transparency at a high reaction velocity; the catalyst; and a method for producing the catalyst, which catalyst comprises: (1) at least one metal element selected from the group consisting of metal elements of Group 4A of the Periodic Table, (2) at least one metal element selected from the group consisting of metal elements of Group 2A of the Periodic Table, aluminum, manganese, iron, cobalt, zinc, gallium and germanium, (a) when the total amount of metal atoms derived from metal element (1) is represented by t (mol/catalyst kg), and the total amount of metal atoms derived from metal element (2) is represented by m (mol/catalyst kg), the value of m/t is within 0.50?m/t?3.50.

Abstract: Provided is a process for producing an aqueous fluorinated polymer dispersion having a reduced content of a fluorinated emulsifier by using a weakly basic anion-exchange resin to adsorb and remove a fluorinated emulsifier with excellent efficiency from an aqueous fluorinated polymer dispersion. Also provided is a process for producing an aqueous fluorinated polymer dispersion having a reduced content of a fluorinated emulsifier, wherein the process includes: adding an organic carboxylic acid represented by the following formula (1): Q(CH2)m(CH(OH))nCOOH??(1) wherein Q is H, CH3 or COOH, m and n each independently represent 0 or an integer of from 1 to 4, and 4?n+m?1, to an aqueous fluorinated polymer dispersion containing a fluorinated emulsifier; and then contacting with a weakly basic anion-exchange resin to adsorb and remove the fluorinated emulsifier.

Abstract: The invention is a method for making condensation polymers, such as polyethylene terephthalate polyester. The method includes introducing a catalyst system, which includes a coordination catalyst component and an acid component, to a polycondensation reaction.

Abstract: In the heat-shrinkable polyester film of the present invention, the main shrinkage direction is the longitudinal direction. In addition, the hot-water heat shrinkage ratios in the longitudinal direction and the width direction when the film is treated in hot water at 90° C. for 10 seconds, the refractive indexes in the longitudinal direction and the width direction and the natural shrinkage ratio after aging at 40° C. and 65% RH for 700 hours or more are each controlled in predetermined ranges. The heat-shrinkable polyester film of the present invention is manufactured by stretching an unstretched film at a ratio of 2.5 times or more and 6.0 times or less in the width direction at a temperature of Tg+5° C. or more and Tg+40° C. or less, passing the film in an intermediate zone that does not execute an active heating operation, heat-treating the film at a temperature of 100° C. or more and 170° C. or less over a period of 1.0 second or more and 10.

Abstract: A horizontal trayed reactor operable to facilitate a chemical reaction in a reaction medium flowing therethrough. The reactor can include a plurality of vertically spaced trays disposed within the horizontally elongated vessel shell. The reaction medium can flow in generally opposite directions on vertically adjacent trays so that the reaction medium flows generally back-and-forth through the reactor.

Abstract: An aqueous binding composition is provided comprised of a polyanhydride based polymer, which polyanhydride based polymer has been purified through the use of an azeotrope. The resulting binder is effective, particularly for binding glass fibers, yet substantially odor free. A fibrous material is provided that is coated with a water-resistant cured binder formed in accordance with the process of the present invention wherein adjoining fibers are bound at cross-over points. Such bound fibrous material is free of a phenol-formaldehyde resin and substantially free of odor. It has been found that by removing purities such as cumene and acetophenone from a polyanhydride binder, e.g., a styrene maleic anhydride based polymer based binder, an effective binder for glass fiber is obtained while also avoiding an odor problem.

Abstract: A nanostructured hybrid liquid oligomer composition including at least one epoxy-functional component (A), at least one cyclic carbonate component (B), at least one amine-functional component (C), and, optionally, at least one acrylate (methacrylate) functional component (D), wherein at least one epoxy, amine, or acrylate (methacrylate) component contains alkoxysilane units. The composition is highly curable at low temperatures (approximately 10 to 30° C.) with forming of nanostructure under the influence of atmospheric moisture and the forming of active, specific hydroxyl groups by reaction of cyclic carbonates with amine functionalities. According to the present invention, the cured composition has excellent strength-stress properties, adhesion to a variety of substrates, appearance, and resistance to weathering, abrasion, and solvents.

Abstract: Disclosed is a light guide member which includes a polycarbonate copolymer having a repeating unit represented by the formula (I) and a repeating unit represented by the formula (II), which is thin, and which is free from thermal degradation (yellowing) or deterioration in properties caused by the generation of a gas, such as a light guide plate formed of a polycarbonate material. Also disclosed is an illumination unit using the light guide member.

Abstract: The present invention relates to a new aromatic polyimide composition containing an aromatic polyimide and a polyarylene of a specific type, and to articles and parts of articles made thereof.

Abstract: A method for preparing a polyalkylene glycol carbonate is disclosed comprising reacting a hydroxyl functional polyalkylene glycol and a reagent selected from carbonates and chloroformates in the presence of an aromatic solvent and an amine.

Abstract: The invention provides a process for the preparation of polycarbonate by the melt transesterification process, polycarbonate having a low electrostatic charge obtainable by this process, and moldings or extrudates, in particular optical data storage media or light-diffusing plates, made from this polycarbonate.

Abstract: A method for manufacturing a recycled polycarbonate raw material for a flame retardant resin composition from discarded and/or recovered optical discs using a polycarbonate resin as a substrate material, and includes (a) a step to identify if 2,2-bis(4-hydroxyphenyl)propane as a divalent phenol of the polycarbonate resin raw material is polymerized as the sole raw material in the polycarbonate resin as the substrate material of the discarded and/or recovered optical discs and (b) a step to remove impurities by a chemical treatment by separating only the discarded and/or recovered optical discs, wherein the polycarbonate resin is identified as polymerized by using 2,2-bis(4-hydroxyphenyl)propane as the sole raw material.

Abstract: Disclosed herein is a copolymer comprising isosorbide carbonate units and a polysiloxane block, wherein the copolymer comprises greater than or equal to 50 mol % isosorbide carbonate units.

Abstract: Various methods are described for preparing dry water-soluble polymers with reduced organic impurity content by combining water-soluble polymer in water with at least one dry polar solvent to form a mixture that separates into a first layer comprising a majority of the solvent and water and a second layer comprising a majority of the polymer, then separating the layers and drying the second layer to obtain a solid comprising the water-soluble polymer. Further, or solid polymer products having reduced organic impurity levels and/or moisture content are also described.

Abstract: A method for treating an unstretched thermoplastic resin film. The method includes includes heat treating an unstretched thermoplastic resin film at a glass transition temperature of the thermoplastic resin Tg° C. or higher and Tg+50° C. or lower for 10 seconds or longer and 600 seconds or shorter while conveying the thermoplastic resin film at a tension of 2 N/cm2 or higher and 50 N/cm2 or lower. The method provides a thermoplastic resin film has an in-plane retardation (Re) and a retardation in the thickness direction (Rth) close to 0 nm, and as such the thermoplastic resin film after heat treatment has |Re| of 0 to 10 nm and |Rth| of 0 to 20 nm.