E.i. Dupont De Nemours and Company

Other

Jerald Rice Harrell

Gordon Mark Cohen

Robert Louis Dawson

Edward J Deyrup

David John Mitchell

Lawrence C Muschiatti

Wolfgang Honsberg

Herbert Vernon Bendler

John R Fisher

John W Paul

Sampson Chun Fai Lee

Clara Young Lin

Sampson Chun-Fai Lee

Disclosed is a process for crosslinking copolymers of ethylene and acrylic esters by converting some of the ester groups to ester or amide groups which contain unsaturation, and then sulfur or peroxide curing the resulting polymers. The resulting crosslinked polymers often have excellent vulcanizate properties, and are useful especially in elastomeric form as seals and gasket.

Process for crosslinking of ethylene/acrylic ester copolymers

Disclosed is a process for crosslinking copolymers of acrylic esters by converting some of the ester groups to ester or amide groups which contain unsaturation, and then sulfur or peroxide curing the resulting polymers. The resulting crosslinked polymers often have excellent vulcanizate properties, and are useful especially in elastomeric form as seals and gasket.

Process for crosslinking of acrylic ester copolymers

Disclosed are compositions of ethylene and (meth)acrylic acid and ester elastomeric copolymers or of (meth)acrylic ester elastomeric copolymers with polylactones and certain polyethers.

Compositions of elastomeric ethylene/(meth)acrylic (acid) ester copolymer and polylactone or polyether

The viscosity of copolymers of a) ethylene, b) C.sub.1 -C.sub.8 acrylates, C.sub.1 -C.sub.8 methacrylates, or vinyl esters of C.sub.1 -C.sub.8 carboxylic acids, and c) at least one alpha, beta-unsaturated carboxylic acid of 3-12 carbon atoms selected from the group consisting of monocarboxylic acids, dicarboxylic acids, and monoesters of dicarboxylic acids is increased, while maintaining gel content at a level of less than 3%, by treatment with a mixture of an organic peroxide and a chromium (III) salt.

Process for modifying the viscosity of copolymers of ethylene and

The viscosity of copolymers of a) ethylene and C.sub.1 -C.sub.8 acrylate or methacrylates or b) ethylene, vinyl esters of C.sub.1 -C.sub.4 carboxylic acids, and another comonomer selected from the group consisting of carbon monoxide, acrylic acid, methacrylic acid, or a glycidyl ester of acrylic or methacrylic acid is increased, while maintaining gel content at a level of less than 3%, by treatment with a free radical generating agent.

Process for modifying visosity of ethylene copolymers

Certain ethylene copolymers that contain an ethylene/anhydride graft copolymer and a magnesium hydroxide or aluminum trihydrate flame and smoke retardant have a good balance of strength and flame and smoke retardant properties. The compositions preferably also contain polyethylene, and/or ionomeric ethylene copolymer and/or an ethylene/propylene elastomer.

Ethylene copolymer compositions

Mono- and polyazoformamide, sulfonyl hydrazide, sulfonyl semicarbazide and/or dinitrosomethylene amine compounds act as chemical blowing agents and curatives for carbon monoxide-containing ethylene copolymers.

Growing community of inventors

Wilmington, DE, United States of America

Jerald Rice Harrell