Patent ID: 7868063
Filing Date: 2011-01-11
Classification: B32B,C08F,C08G,C08L,Y10S,Y10T

Abstract:
1. A polymeric lubricant having multi layer structure comprising: a) silicone-based seeds comprising 3 to 10 parts by weight of a seed polymer latex obtained by polymerizing, with latex, a mixture comprising 6 to 25% by weight of silane having a vinyl group, and a cyclosiloxane, wherein the silane having the vinyl group is selected from the group consisting of triethoxyvinylsilane, 3-(trimethoxysilyl)propyl acrylate, 3-(trimethoxysilyl)propylmethacrylate and a mixture thereof; b) cores comprising 40 to 77 parts by weight of a core polymer for covering the seeds, the core polymer comprising 30 to 60% by weight of an aromatic vinyl monomer, 5 to 15% by weight of a vinyl-based comonomer and a alkylacrylate, and obtained by polymerizing with an emulsion in the presence of the seeds; and c) 13 to 57 parts by weight of a shell polymer for covering the core polymer, the shell polymer comprising 1 to 37% by weight of an aromatic vinyl monomer, 1 to 3% by weight of a silicone-based polymer, 60 to 98% by weight of methyl methacrylate and a vinyl-based comonomer, and obtained by polymerizing with an emulsion in the presence of the core polymer.