Patent ID: 6444154
Filing Date: 2002-09-03
Classification: B29B,B29C,B29K,C08J

Abstract:
A process of preparing a liquid silicone rubber composition, comprising:introducing a filler, treating agent and silicone polymer into an extruder having a length to diameter ratio of at least greater than 50; and continuously compounding and devolatilizing said filler, treating agent and silicone polymer into said liquid silicone rubber composition in said extruder; wherein said silicone polymer comprises a vinyl-terminated polydimethylsiloxane represented by recurring units of the following Formula: wherein, R1 independently at each occurrence represents C1-4 alkyl, or C2-4 alkylene; R2 independently at each occurrence represents C1-4 alkyl, C1-C4 haloalkyl or C2-4 alkylene; R3 independently at each occurrence represents H, C1-10 alkyl, C2-4 alkylene, C4-6 cycloalkyl, OH or C1-C4 haloalkyl; and n is a value of about 100 to less than 1000.