Ionomer composition
AssigneeDupont-Mitsui Polychemicals Co., Ltd.
InventorsYoshimasa Yamamoto, Eisaku Hirasawa
Life of this patent
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Abstract
Disclosed is an ionomer composition comprising (A) an ionomer formed by neutralizing a carboxyl group of an ethylene/unsaturated carboxylic acid copolymer with an transition metal cation, (B) a polyamide and (C) a polyamide oligomer having a terminal group of the molecule chain blocked with a primary amino group. Since two polyamide components differing in the degree of polymerization are incorporated in this ionomer composition, excellent characteristics of the ionomer resin are related in the ionomer composition, and the mechanical strength at high temperatures, the formability and the transparency are prominently improved.
Claims21
An ionomer composition comprising (A) an ionomer resin having at least a part of the carboxyl group of an ethylene/unsaturated carboxylic acid copolymer neutralized with a transition metal cation, in an amount of 50 to 95 parts by weight, (B) a polyamide resin having a number average molecular weight of at least 8000, in an amount of 2 to 40 parts by weight, and (C) a polyamide oligomer having a primary amino group at one or both of the terminals and an average degree of polymerization of 5 to 35, in an amount of 3 to 30 parts by weight, and the amount of (B)+(C) equals 5 to 50 parts by weight of the composition, per 100 parts by weight of the sum of the amounts of the compounds A, B and C.
An ionomer composition comprising (A) an ionomer resin having at least a part of the carboxyl group of an ethylene/unsaturated carboxylic acid copolymer neutralized with a transition metal cation, in an amount of 60 to 90 parts by weight, (B) a polyamide resin having a number average molecular weight of 10,000 to 40,000, in an amount of 5 to 35 parts by weight, and (C) a polyamide oligomer having a primary amino group at one or both of the terminals and an average degree of polymerization of 10 to 30, in an amount of 5 to 25 parts by weight, and the amount of (B) + (C) equals 5 to 50 parts by weight of the composition, per 100 parts by weight of the sum of the amounts of the compounds A, B and C.
Dependencies are inferred from the claim text.