Modified elastomer and laminate thereof

DETAILED DESCRIPTION What is claimed is: 1.
A modified elastomer composition including modified elastomer and crystalline polyolefin prepared by the reaction of: (A) 100 parts by weight of at least one elastomer selected from an ethylene/butene-1 copolymer, a styrene/butadiene copolymer and an ethylene/propylene copolymer wherein the ethylene content of said ethylene/butene-1 copolymer comprises 10 to 90% by weight of said copolymer and its Mooney viscosity at 100.
degree.
C.
is 10 to 200; and wherein the styrene content of said styrene/butadiene copolymer comprises 5 to 70% by weight of said copolymer and its Mooney viscosity at 100.
degree.
C.
is 10 to 200; and wherein the ethylene content of said ethylene/propylene copolymer comprises 10 to 90% by weight of said copolymer, its Mooney viscosity at 100.
degree.
C.
is 10 to 200 and its density is 0.
85 to 0.
90, and not more than 50 parts by weight of a crystalline polyolefin, with 0.
005 to about 0.
8 part by weight of an unsaturated carboxylic acid or its anhydride and further including a radical generator and melting and kneading the mixture at 120 to 300.
degree.
C.
2.
The modified elastomer of claim 1 wherein said crystalline polyolefin is selected from the group consisting of high-density polyethylene, medium-density polyethylene, low-density polyethylene, crystalline ethylene/butene-1 copolymer, polypropylene, crystalline propylene/ethylene copolymer, polybutene-1 and poly (4-methyl-pentene-1), or mixtures thereof.
3.
The modified elastomer of claim 2 wherein said crystalline polyolefin is selected from the group consisting of high-density polyethylene, low-density polyethylene and polypropylene.
4.
The modified elastomer of claim 1 further prepared by the reaction of a radical generator.
5.
The modified elastomer cf claim 4 wherein said radical generator is an organic peroxide.
6.
The modified elastomer of claim 1 wherein said unsaturated carboxylic acid or anhydride thereof is selected from the group consisting of maleic anhydride, acrylic acid and endo-bicyclo-[2