Elastomer blends having improved extrusion resistance and method

Details Elastomer blends having improved extrusion resistance and method Elastomer blends having improved extrusion resistance and method

1989-01-17

1992-02-25

Morgan, Kriellion S.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 89, 525 91, 525 98, 525 99, C08L 5300

Patent

active

050914715

ABSTRACT:
Curable elastomer compositions having improved extrusion resistance comprise from about 50 to 90 parts by weight of a homogeneous blend of rubber, selected from the group consisting of natural and synthetic rubbers and blends thereof, and from about 10 to 50 parts by weight of a block copolymer containing elastomeric blocks and crystalline blocks. The elastomer compositions of the present invention have particular utility as oil well packers. A method for improving the extrusion resistance of curable elastomer compositions comprises the steps of blending together an elastomer, selected from the group consisting of natural and synthetic rubbers and blends thereof with a block copolymer containing elastomeric blocks and crystalline blocks to form a mixture and then curing the mixture.

REFERENCES:
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Abstract of Japanese Patent 56-132192, Shimozato, 3/83.

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