Sliding property improving agent and process for making the same
AssigneeNippon Oil and Fats Co., Ltd.
InventorsShouichi Yoshitani, Hiroki Mizutani, Nobuyoshi Suzuki, Kazumine Ohara, Yasushi Ohyanagi, Isamu Sekiguchi
Life of this patent
Estimating the term…
Abstract
A sliding property improving agent comprising a multi-phase structure thermosplastic resin which consists of a dispersion of 5 to 95 parts by weight of a non-polar .alpha.-olefin polymer (a) and 95 to 5 parts by weight of a vinyl polymer (b), with the dispersing polymer having a particle size from 0.001 to 10 .mu.m. A thermoplastic resin containing said resinous agent exhibits excellent mechanical strength, high anti-brasion and improved sliding properties.
Claims3
A method of improving the sliding property of a thermoplastic resin selected from the group consisting of a polyoxymethylene resin, a polycarbonate resin, a styrene resin, a polyester resin, a polyarylene sulfide resin, a polyamide resin, a polyphenylene ether resin, a polyarylate resin and mixtures thereof, said method comprising the steps of adding 0.1-50% by weight of a lubricating material and 0.1-50% by weight of sliding property improving agent, said agent comprising a multiphase structure thermoplastic resin made of a graft copolymer which consists of from 5 to 95 parts by weight of an ethylene polymer (a) and from 95 to 5 parts by weight of a vinyl polymer (b) formed from a monomer selected from the group consisting of an aromatic vinyl monomer, an acrylic acid ester monomer, a methacrylic acid ester monomer, a vinyl cyanide monomer, a vinyl ester monomer and mixtures thereof, said vinyl polymer (b) having a mean number degree of polymerization of from 10 to 5,000, one of ethylene polymer (a) and vinyl polymer (b) being a dispersed polymer and the other being a dispersing polymer.
Dependencies are inferred from the claim text.