Antistatic resin composition
AssigneeKureha Kagaku Kogyo Kabushiki Kaisha
InventorsMasaki Ohya, Akio Kobayashi, Takeo Ogiwara, Yoshikatsu Satake
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Abstract
A graft copolymer is obtained by graft-polymerizing a vinyl or vinylidene monomer onto a rubber trunk polymer which comprises a polyalkylene oxide monomer comprising 4 to 500 alkylene oxide groups together with an ethylenic unsaturation, and a conjugated diene and/or an alkyl acrylate. This graft copolymer alone or in a mixture thereof with another thermoplastic resin, because of the presence of the polyalkylene oxide monomer unit incorporated in the rubber trunk polymer, provides a resin composition possessing excellent antistatic property, which, practically, is not lowered by washing.
Claims2
An antistatic resin composition comprising:
- (A) 10 to 100 parts of a graft copolymer obtained by graft-polymerizing 20 to 95% of at least one grafting monomer selected from the group consisting of alkyl acrylates, alkyl methacrylates, styrene and acrylonitriles, onto 5 to 80% of a rubber trunk polymer which in turn is a copolymer of
- 50to 99% of a member selected from the group consisting of conjugated dienes, alkyl acrylates and mixtures thereof,
- 1 to 50% of a polyalkylene oxide monomer selected from the group consisting of those represented by the following general formulae:
- ##STR6## where R.sub.1 is H or CH.sub.3, X is H or an alkyl group of 1 to 9 carbon atoms and 6.ltoreq.m.ltoreq.50, and 0 to 49% of a monomer selected from the group consisting of alkyl methacrylates, methacrylic acid, acrylonitriles, styrene, itaconic acid and sodium styrene sulfonate;
- and
- (B) 0 to 90 parts of a thermoplastic resin compatible with said graft copolymer (A), said rubber trunk polymer being 5 to 80% of the total of the graft copolymer (A) and the thermoplastic resin (B), all quantities expressed in percentages and parts being by weight.
Dependencies are inferred from the claim text.