Acrylate copolymers grafted onto a polar, water-soluble backbone polymer
AssigneeAmerican Cyanamid Company
InventorEugene Y. C. Chang
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Abstract
Vulcanizable compositions comprising a polar, water-soluble backbone polymer having a copolymer of an acrylic acid ester and a curing-site containing comonomer grafted thereon and a method for the production thereof, are disclosed.
Claims11
A sulfur vulcanizable elastomer composition comprising (A) from about 20 to 40 weight percent, based on the total weight of said vulcanizable elastomer, of a polar water-soluble backbone polymer having grafted thereon (B) from about 60 to 80 weight percent, same basis, of a copolymer of a major proportion of one or more esters of acrylic acid and a minor proportion of an active halogen containing monoethylenically unsaturated ester or ether comonomer.
A method for the preparation of a sulfur vulcanizable elastomer which comprises forming a mixture of about 20 to 40 percent, by weight, of a polar, water-soluble backbone polymer and about 60 to 80 percent, by weight, of a mixture of a major portion of one or more esters of acrylic acid and a minor portion of a monoethylenically unsaturated ester or ether comonomer containing an active halogen for vulcanization, adding thereto a suitable amount of a free radical catalyst and polymerizing said mixture of monomers in the presence of said backbone polymer at a temperature of about 60.degree. to 80.degree. C.
Dependencies are inferred from the claim text.