Provided are a hydroxyl group-containing sulfonated polyethersulfone copolymer, a method for preparing the same, a polymer electrolyte membrane for fuel cell, and a membrane electrode assembly including the same. More particularly, provided are a hydroxyl group-containing sulfonated polyethersulfone electrolyte membrane and a membrane electrode assembly including the same, which are applied to a fuel cell to provide significantly higher ion conductivity as compared to the sulfonated polymer electrolyte membranes according to the related art. The hydroxyl group-containing sulfonated polyethersulfone copolymer electrolyte membrane shows significantly higher ion conductivity under various temperature and humidity conditions as compared to the sulfonated polymer electrolyte membranes according to the related art. Therefore, it is expected that the hydroxyl group-containing sulfonated polyethersulfone copolymer substitutes for expensive fluoropolymer electrolyte membranes such as Nafion.

[Object] The object is to provide a thermoplastic resin composition having high leaser marking property and high heat resistance and a molded product made of the same.

[Solution] A thermoplastic resin composition, comprises: 100 parts by weight of a thermoplastic resin (a) that is a liquid crystalline polyester and/or a polyphenylene sulfide; and 0.001 to 10 parts by weight of a metal complex (b) having: a monodentate or a bidentate ligand; and at least one metal and/or its salt selected from the group consisting of copper, zinc, nickel, manganese, cobalt, chromium and tin.

The present invention relates to a composition for an optical material, which is capable of suppressing occurrence of polymerization unevenness called striae, in particular, striae to be caused in high-powered lenses with sharp curves, and more specifically relates to a composition for an optical material including: a polymerization catalyst having a mass ratio of dibutyltin dichloride to monobutyltin trichloride of 97.0/3.0 to 100.0/0.0; a polythiol compound; and a polyiso(thio)cyanate compound.

The present invention provides a method for producing a binding material containing modified sulfur which gives excellent ignition resistance, mechanical strength, water sealability, and resistance to sulfur-oxidizing bacteria, and which may be usable for sealing domestic and industrial wastes, and a method for producing, with easy control, a material containing modified sulfur using the binding material. The method for producing the binding material includes the steps of providing a starting material for modified sulfur composed of 100 parts by mass of sulfur and 0.1 to 25 parts by mass of ethylidene norbornene (ENB), mixing the starting material in a molten state at 120 to 160 °C, and when the viscosity at 140 °C of the resulting molten mixture falls in the range of 0.050 to 3.0 Pa·s, cooling the molten mixture down to a temperature not higher than 120 °C. The method for producing the material containing modified sulfur includes the steps of, after the binding material is prepared, mixing 10 to 50 mass% of the binding material and 50 to 90 mass% of aggregate at 120 to 160 °C, while the viscosity at 140 °C of the binding material is maintained within a range of 0.050 to 3.0 Pa·s, and cooling the resulting mixture down to a temperature not higher than 120 °C.

There is provided an anti-reflective coating forming composition comprising a solid content and a solvent, wherein a proportion of sulfur atom in the solid content is 5 to 25 mass%. The anti-reflective coating obtained from the composition has a high preventive effect for reflected light, causes no intermixing with photoresists, and can use in lithography process by use of a light having a short wavelength such as F2 excimer laser beam (wavelength 157 nm) or ArF excimer laser beam (wavelength 193 nm), etc.

A method of improving the processing properties such as melt stability of poly(arylene sulfide/sulfone) is provided. The polymer is heated with a polar organic solvent, water and optionally, an alkali metal or alkaline earth metal carboxylate, to a temperature and for a time to dissolve the polymer whereupon the resulting solution is quenched with additional polar organic solvent, water and an alkali metal or alkaline earth metal carboxylate if not present in the original solution to cause a phase separation. The resultant mixture is cooled, and particulate poly(arylene sulfide/sulfone) having improved processing properties is recovered.

A polymerization process is provided for the production of high molecular weight aromatic sulfide/ketone polymer from at least one dihaloaromatic ketone, at least one alkali metal sulfide, at least one polar organic compound and water wherein the polymerization reaction is conducted in two distinct steps separated by an intermediate step of removal of at least a portion of the water.

Reaction products of sulfur with an unsaturated reactant selected from d-limonene, 5-ethylidene-2-norbornene, styrene. and dicyclopentadiene, reacted at a temperature above the melting point of sulfur and below 159°C until chemically combined, then further reacted above the melting point of sulfur until solidified The resulting products serve as vulcanizing agents when compounded with rubber. The unvulcanized rubber compounds exhibit less blooming and better adhesion to a variety of substrates then rubber compositions compounded with soluble or insoluble sulfur. Vulcanizates containing the present compositions and method for increasing the adhesion of rubber to a substrate during a vulcanization process are also disclosed.

A sulfur-containing polymer having a repeating unit represented by the formula: where R is a straight or branched alkylene group having from 1 to 6 carbon atoms, R' is a straight or branched alkylene group having from 1 to 3 carbon atoms and p is an integer of from 0 to 10, and having an average molecular weight of from 500 to 10,000 and a sulfur content of from 15 to 65% by weight.

An electrically conductive polymer, doped with at least one electron acceptor or electron donor, which polymer has a main chain of arylene units and interspersed regularly or irregularly between them one or more chalcogen atoms or groups of such atoms, especially sulfur and/or oxygen atoms.

A modified sulfur cement formulation, comprising the polymeric reaction product of sulfur with a cyclopentadiene oligomer - dicyclopentadiene containing modifier in which the cyclopentadiene oligomer content of said modifier is at least 37 wt. %.