Patent ID: 7745536
Filing Date: 2010-06-29
Classification: C08F,C08G,C08L,Y10S

Abstract:
1. An acryl-silicon rubber complex polymer, which has an impact strength of 50˜130 kg·cm/cm, a gloss of 50˜70 and a seed-core-shell structure, wherein the seed has a cross-linking structure of a vinyl monomer and a hydrophilic monomer and is prepared by polymerization of 65˜99 weight part of a vinyl monomer, 0.5˜30 weight part of a hydrophilic monomer and 0.5˜5 weight part of a cross-linking agent monomer; the core is a microagglomerated acryl-silicon interpenetrating network (IPN) core which is prepared by a process comprising the steps of first forming on the seed an acryl-silicon IPN wherein 0.1 to 30 weight parts of silicon rubber particles, comprising 97.0 to 99.9 weight parts vinyl terminated polydimethylsiloxane and 0.1 to 3.0 weight parts polymethylhydrogensiloxane per 100 weight parts of silicon rubber, are dispersed in and cross-linked to an acryl rubber continuous phase; followed by microagglomeration by addition of an organic acid or salt to form said microagglomerated acryl-silicon complex IPN core having a mean particle diameter of 150 to 445 nm; and the shell, prepared by graft-polymerization of one or more C1˜C4 alkyl methacrylates selected from a group consisting of methyl methacrylate, ethyl methacrylate, propyl methacrylate, butyl methacrylate and isopropyl methacrylate, is formed on the microagglomerated acryl-silicon complex IPN core.