Coextrudable adhesives and products therefrom
First Claim
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1. A coextrudable adhesive composition consisting essentially of:
- (a) about 60 to about 95 percent of a blend of;
(i) about 1 to 100 percent by weight of a copolymer of ethylene with about 5 to about 40 weight percent of at least one copolymerized alkyl acrylate or methacrylate comonomer and a grafted comonomer containing pendant carboxylic acid or carboxylic acid anhydride functionality, wherein the amount of said grafted comonomer comprises about 0.03 to about 2.0 percent by weight of the total adhesive composition, and(ii) 0 about 99 percent by weight of a copolymer of ethylene with about 5 to about 40 weight percent of at least one alkyl acrylate or methacrylate comonomer, wherein the copolymer of (i) and the copolymer of (ii) are mutually compatible; and
(b) about 5 to about 40 weight percent of a copolymer of about 40 to about 95 percent by weight ethylene with at least one comonomer selected from the group consisting of alpha olefins, nonconjugated dienes in an amount of 0 to about 10 weight percent, vinyl esters of carboxylic acids, styrene, alkyl acrylates, and alkyl methacrylates, wherein component (b) is incompatible with component (a).
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Abstract
A coextrudable adhesive composition comprises a blend of (a) a copolymer of ethylene with alkyl acrylate or methacrylate comonomer and a grafted comonomer containing pendant carboxylic acid or carboxylic acid derivative functionality, and (b) a copolymer of ethylene with at least one comonomer selected from the group consisting of alpha olefins, nonconjugated dienes, vinyl esters of carboxylic acids, styrene, alkyl acrylates, and alkyl methacrylates, wherein component (b) is incompatible with component (a).
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22 Claims
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1. A coextrudable adhesive composition consisting essentially of:
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(a) about 60 to about 95 percent of a blend of; (i) about 1 to 100 percent by weight of a copolymer of ethylene with about 5 to about 40 weight percent of at least one copolymerized alkyl acrylate or methacrylate comonomer and a grafted comonomer containing pendant carboxylic acid or carboxylic acid anhydride functionality, wherein the amount of said grafted comonomer comprises about 0.03 to about 2.0 percent by weight of the total adhesive composition, and (ii) 0 about 99 percent by weight of a copolymer of ethylene with about 5 to about 40 weight percent of at least one alkyl acrylate or methacrylate comonomer, wherein the copolymer of (i) and the copolymer of (ii) are mutually compatible; and (b) about 5 to about 40 weight percent of a copolymer of about 40 to about 95 percent by weight ethylene with at least one comonomer selected from the group consisting of alpha olefins, nonconjugated dienes in an amount of 0 to about 10 weight percent, vinyl esters of carboxylic acids, styrene, alkyl acrylates, and alkyl methacrylates, wherein component (b) is incompatible with component (a). - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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Specification