Patent ID: 8227520
Filing Date: 2012-07-24
Classification: C08G,C08J,C08K,C08L

Abstract:
1. A silicone rubber sponge emulsion composition, which comprises (A) a liquid silicone rubber base comprising (a-1) a liquid diorganopolysiloxane having at least two alkenyl groups per molecule and a viscosity at 25° C. not less than 100 mPa·s and not more than 100,000 mPa·s and (a-4) a reinforcing filler, (a-2) an organopolysiloxane having at least two silicon-bonded hydrogen atoms per molecule, and (a-3) a platinum catalyst, (B 1 ) an aqueous solution of (b-1) a water-soluble polymer comprising sodium salt of an acrylic acid polymer, said water-soluble polymer being present in said component (B 1 ) in an amount of from 0.1 to 5% by weight, and (C) an emulsifying agent, and in which (a-1) to (a-3) or (a-1) to (a-4) in component (A) form an addition-curable type liquid silicone rubber composition, component (B 1 ) is contained in a proportion ranging from 50 to 250 parts by weight per 100 parts by weight of the total of (a-1) to (a-4) in component (A) and component (C) is contained in a proportion ranging from 0.1 to 10 parts by weight per 100 parts by weight of the total of (a-1) to (a-4) in component (A).