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US 5,310,788 AGranted
Saponified ethylene-vinyl acetate copolymer composition and the use thereof
AssigneeNippon Gohsei Kagaku Kogyo Kabushiki Kaisha
InventorsTakamasa Moriyama, Hiroshi Takida, Tomoyoshi Uemura
Life of this patent
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Abstract
An improved saponified ethylene-vinyl acetate copolymer composition comprising (A) 50 to 99.5 weight % of a saponified ethylene-vinyl acetate copolymer, (B) 0.4 to 50 weight % of an ethylene copolymer having a density of 0.90.about.0.94 g/cm.sup.3, and (C) a graft polymer obtainable by grafting an ethylenically unsaturated carboxylic acid or a derivative thereof to a polyolefin resin and reacting the adduct with a polyamide oligomer or polyamide.
Claims3
An improved saponified ethylene-vinyl acetate copolymer-containing composition comprising
- (A) 50 to 99.5 weight % of a saponified ethylene-vinyl acetate copolymer, with an ethylene content of 20 to 60 mole % and a degree of saponification of its vinyl acetate component being not less than 95 mole %,
- (B) 0.4 to 49.9 weight % of an ethylene copolymer different from copolymer (A) and which has a density of 0.90-0.94 g/cm.sup.3, and
- (C) 0.1 to 15 weight % of a graft polymer obtained by grafting 0.05 to 10 parts by weight of an ethylenically unsaturated carboxylic acid or a derivative thereof to 100 parts by weight of a polyolefin resin to produce an adduct and reacting the adduct with a polyamide having a degree of polymerization of 350 to 500 where the reaction ratio of the polyamide to the adduct is 0.01 to 1 mole per mole of carboxyl group of the adduct.
Dependencies are inferred from the claim text.