Patent ID: 6051650
Filing Date: 2000-04-18
Classification: C08F,C08L

Abstract:
A rubber-reinforced thermoplastic resin composition comprising a thermoplastic resin matrix having dispersed therein particles of a graft polymer, said particles of a graft polymer comprising particles of a rubber polymer having emulsion-graft-polymerized to the surface thereof two or more kinds of vinyl compounds graft-copolymerizable with said rubber polymer, wherein the surface graft coverage of said vinyl compounds graft-polymerized to the surface of said particles of a rubber polymer as determined by equation (m1) is 80% or more and the average thickness of said vinyl compounds graft-polymerized to the surface of said particles of a rubber polymer is from 5 to 25 nm:Surface graft coverage (%)=(s2/s1).times.100 (m1)wherein s1 represents the surface area of said particles of a rubber polymer; and s2 represents the surface area of said vinyl compound graft-polymerized to the surface of said particles of a rubber polymer so as to cover the surface of said particles of a rubber polymer.