An aromatic polysulfone resin having a yellowness index of 50 or higher and a weight average molecular weight of 25,000 to 45,000 is provided.

An aromatic polysulfone resin having a yellowness index of 50 or higher and a weight average molecular weight of 25,000 to 45,000 is provided.

A method for preparing a poly(phenylene ether) includes oxidatively polymerizing a poly(phenylene ether) starting material having an initial intrinsic viscosity in the presence of an organic solvent and a copper-amine catalyst to form a reaction mixture including a poly(phenylene ether) having a final intrinsic viscosity that is at least 50% greater than the initial intrinsic viscosity. The method further includes terminating the oxidative polymerization to form a post-termination reaction mixture; combining an aqueous solution comprising a chelant with the post-termination reaction mixture to form a chelation mixture of an aqueous phase comprising chelated copper ion, and an organic phase comprising dissolved poly(phenylene ether); separating the aqueous phase and the organic phase; and isolating the poly(phenylene ether) from the organic phase. High molecular weight poly(phenylene ether)s prepared according to the method described herein are also disclosed.

A method for preparing a poly(phenylene ether) includes oxidatively polymerizing a poly(phenylene ether) starting material having an initial intrinsic viscosity in the presence of an organic solvent and a copper-amine catalyst to form a reaction mixture including a poly(phenylene ether) having a final intrinsic viscosity that is at least 50% greater than the initial intrinsic viscosity. The method further includes terminating the oxidative polymerization to form a post-termination reaction mixture; combining an aqueous solution comprising a chelant with the post-termination reaction mixture to form a chelation mixture of an aqueous phase comprising chelated copper ion, and an organic phase comprising dissolved poly(phenylene ether); separating the aqueous phase and the organic phase; and isolating the poly(phenylene ether) from the organic phase. High molecular weight poly(phenylene ether)s prepared according to the method described herein are also disclosed.

A prepolymerized resin and a method of preparing the prepolymerized resin are provided, the method comprising a step of prepolymerizing t-butyl styrene and unsaturated bond-containing polyphenylene oxide. The unsaturated bond-containing polyphenylene oxide comprises: methacrylate-terminated polyphenylene oxide, vinylbenzyl-terminated polyphenylene oxide, vinylbenzyl-modified bisphenol A polyphenylene oxide resin, vinyl-containing chain-extended polyphenylene oxide resin or a combination thereof. A resin composition comprising the prepolymerized resin and an article made from the resin composition are also provided.

Copolymer C comprising polyarylene ether blocks A and polyalkylene oxide blocks PAO, wherein said polyarylene ether blocks A are blocks of at least one partially sulfonated polyarylene ether.

Copolymer C comprising polyarylene ether blocks A and polyalkylene oxide blocks PAO, wherein said polyarylene ether blocks A are blocks of at least one partially sulfonated polyarylene ether.

A copolymer having the structure (I) wherein Q.sup.1, Q.sup.2, Q.sup.3, Q.sup.4, m, and n are defined herein. The copolymer can be formed by oxidative copolymerization of 2,4,6-trimethyIresorcinoI with a monohydric phenol. Also describes are a composition comprising the copolymer and a solvent, and a composition comprising the copolymer and a thermosetting resin.

##STR00001##

An aromatic polysulfone resin produced by the polycondensation of 4,4-dihydroxydiphenylsulfone represented by chemical formula (S1) shown below and 2-(4-(4-hydroxyphenylsuIfonyl)phenoxy)-5-(4-hydroxyphenylsulfonyl)phenol represented by chemical formula (S2) shown below with 4,4-dichlorodiphenylsulfone represented by chemical formula (S3) shown below. ##STR00001##
wherein hydrogen atoms in phenylene groups in formula (S1), formula (S2) and formula (S3) may be each independently substituted with an alkyl group, an aryl group or a halogen atom.

A capped bisphenol polyether oligomer including a reactive end group, wherein the capped bisphenol polyether oligomer further includes a repeating unit derived from: a bisphenol monomer, a benzylic dihalide, a tertiary cycloalkyl dihalide, or a combination thereof; and optionally, the capped bisphenol polyether oligomer further includes a branching agent.