General Electric Company

Sabic Global Technologies B.v.

Shpp Global Technologies B.v.

Gary Mell Bates

Hua Guo

Sai-Pei Ting

William R Haaf

Xiankuan Zhang

James Kauffman

Scott Michael Fisher

Gregory R Chambers

Nitin Vilas Tople

Douglas Henry Lenz

Kenchaiah Lohith

Xin Li

Vivek Chandra Gyani

Omoyemen E Ofoegbu

Robin Woodbury

A phenol alkylation catalyst exhibiting a desirable combination of activity, selectivity, and regenerability is prepared from a catalyst precursor that includes specific amounts of magnesium oxide, copper oxide or a copper oxide precursor, a hydrous magnesium aluminosilicate-containing binder, a pore-former, a lubricant, and water. Methods of forming and regenerating the catalyst, as well as a phenol alkylation method, are described.

Phenol alkylation catalyst precursor and catalyst, method of forming catalyst, method of regenerating catalyst, and method of alkylating phenol

A method of purifying a poly(phenylene ether) is described. The method includes mixing a poly(phenylene ether) solution comprising a poly(phenylene ether) and a poly(phenylene ether) solvent with first washing solvents including a C1-C4 alkanol and water to form a first liquid phase including 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. The first and second liquid phases combined comprise about 60 to about 95 weight percent poly(phenylene ether) solvent, about 4 to about 32 weight percent C1-C4 alkanol, and about 1 to about 36 weight percent water. When optionally combined with evaporative removal of the poly(phenylene ether) solvent, the method reduces C1-C4 alkanol usage compared to the antisolvent precipitation method, and it produces poly(phenylene ether) having reduced catalyst metal ion residue and reduced color.

Poly(phenylene ether) process

Soluble polymer resins are separated from a solution slurry with the use of a precipitation aid where the slurry contains the polymer resin in both a soluble form and a solid particulate phase. The precipitation aid absorbs onto the surface of the solid polymer resin particulates and is a suitable blend component for formulations of the polymer resin. The solution slurry may be concentrated and heated prior to precipitation of the polymer resin.

Method for isolating polymer resin from solution slurries

Thermoplastic compositions comprised of polyphenylene ether resin with or without an alkenyl aromatic resin such as polystyrene can be impact modified with a modifying agent having a core-shell structure comprised of an interpenetrating, crosslinked acrylate core and a crosslinked styrenic shell.

Impact modified polyphenylene compositions

Thermoplastic compositions comprised of compatible combinations of a polyphenylene ether resin and a polyamide resin and which require improved thermal properties can be impact modified with a modifying agent having a core-shell structure comprised of a crosslinked acrylate core and a crosslinked styrenic shell.

Impact modified polyphenylene ether-polyamide compositions

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Voorheesville, NY, United States of America

Gary Mell Bates