Patent ID: 6232404
Filing Date: 2001-05-15
Classification: B29L,B60C,C08F,C08L,Y10T

Abstract:
A method of preparing an elastomer composition which comprises the steps of (A) blending (1) a first latex of a diene-based elastomer having a Mooney (ML4) viscosity in a range of about 70 to about 140 with a an additional latex of a diene-based elastomer having a Mooney (ML4) viscosity in a range of about 5 to about 20 or (2) a first polymerizate of a diene-based elastomer having a Mooney (ML4) viscosity in a range of about 70 to about 140 with an additional polymerizate of a diene-based elastomer having a Mooney (ML4) viscosity in a range of about 5 to about 20, followed by (B) drying and recovering the resulting elastomer blend; wherein the weight ratio of said first high viscosity elastomer to said additional low viscosity elastomer is in a range of about 20/1 to about 1/1.