Patent ID: 9127146
Filing Date: 2015-09-08
Classification: B60C,C08C,C08F,C08K,C08L

Abstract:
1. A rubber composition comprising a polymer (B) obtained from an emulsion-polymerized polymer latex (A) with a number average molecular weight in the range of 1,000 to 130,000 and a polymer (D) obtained from an emulsion-polymerized polymer latex (C) with a number average molecular weight exceeding 130,000, wherein the polymer (B) obtained from the emulsion-polymerized polymer latex (A) has a vinyl bond content in a diene compound portion of 10 mass % to 30 mass %, the rubber composition further comprising a polymer (E) obtained by mixing the emulsion-polymerized polymer latex (A) with the emulsion-polymerized polymer latex (C) and then coagulating and drying the mixture, wherein the polymer (E) has a molecular weight distribution (Mw/Mn) within the range of 3.0 to 7.0.