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AssigneeSanyo Chemical Industries, Ltd.
InventorsYasuhiro Ueda, Eiichi Senda, Yoshitsugu Takai, Tokiko Kokubu, Toshiaki Okamoto, Eiji Ichihara
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A polyetheresteramide having good heat resistance, permanent antistatic property and superior compatibility with thermoplastic resins and a resin composition containing the polyetheresteramide are disclosed, wherein the polyetherester-amide consists essentially of a polyamide oligomer with carboxylic chain ends having a number average molecular weight between 200 and 5,000 and a bisphenol compound with oxyalkylene units having a number average molecular weight between 300 and 3,000. Antistatic resin compositions with good antistatic property and heat resistance are obtained from compositions comprising 3 to 40% by weight of the polyetheresteramide and 60 to 97% by weight of thermoplastic resins. The antistatic resin compositions can contain as compatibilizers vinyl polymers having functional groups such as carboxyl and epoxy groups or block polymers containing polyolefin blocks and aromatic vinyl polymer blocks. To further improve the antistatic property of the resin composition a composition comprising at least 97% by weight of the polyetheresteramide and at least 0.01% by weight of an alkali metal or alkaline earth metal halide can be used in the same way as the polyetheresteramide.
An antistatic resin composition comprising the following components:
An antistatic resin composition comprising 60 to 97% by weight, based on the total composition, of a thermoplastic resin selected from the group consisting of a polyolefin resin, a polyamide resin, a polyester resin, a polycarbonate resin, a polyacetal resin, a copolymer of at least two monomers selected from the group consisting of styrenes, acrylic esters, methacrylic esters and vinyl cyanides and a graft copolymer of a vinyl monomer containing a functional group selected from the group consisting of an ester group, a cyano group, and a halogeno group onto a rubber polymer selected from the group consisting of polybutadiene, poly(styrene-butadiene), poly(acrylonitrile-butadiene), polyisoprene, polychloroprene, ethylene-propylene-butadiene-terpolymer, poly(butyl acrylate) and acrylic rubber, and 3 to 40% by weight, based on the total composition, of the resin composition comprising at least 97% by weight based on the total composition of polyetheresteramide consisting essentially of residues derived from (1) a polyamide oligomer having end units containing a carboxylic group and having a number average molecular weight from 200 to 5,000 and (2) a bisphenol compound containing oxyalkylene units and having a number average molecular weight from 300 to 3,000, and at least 0.01% by weight based on the total composition of a halide of an alkali metal or an alkaline earth metal.
An antistatic resin composition comprising 55 to 95% by weight, based on the total composition, of a polyolefin resin, 1 to 20% by weight, based on the total composition, of a polyamide resin and a residual amount of a resin composition comprising at least 97% by weight based on the total composition of polyetheresteramide consisting essentially of residues derived from (1) a polyamide oligomer having end units containing a carboxylic group and having a number average molecular weight from 200 to 5,000 and (2) a bisphenol compound containing oxyalkylene units and having a number average molecular weight from 300 to 3,000, and at least 0.01% by weight based on the total composition of a halide of an alkali metal or an alkaline earth metal, to total 100% by weight.
Dependencies are inferred from the claim text.