Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Reexamination Certificate
2006-05-02
2008-10-07
Choi, Ling-Siu (Department: 1796)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
C526S337000, C152S532000, C152S537000
Reexamination Certificate
active
07432337
ABSTRACT:
The present invention provides a rubber composition for coating carcass cord improving adhesive property to the carcass cord and further suppressing the crack growth, heat generation and lowering of rubber property, and a carcass cord coated thereby. A rubber composition for coating carcass cord comprising 3 to 10 parts by weight of zinc oxide, 0.5 to 5 parts by weight of resorcin condensate or modified resorcin condensate and 0.5 to 5 parts by weight of partial condensate of hexamethylol melamine pentamethyl ether or partial condensate of hexa methoxy methylol melamine based on 100 parts by weight of a rubber component comprising 40 to 80% by weight of natural rubber or isoprene rubber, 10 to 30% by weight of butadiene rubber and 10 to 40% by weight of styrene butadiene rubber.
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Birch, Stewart, Kolasch and Birch LLP
Choi Ling-Siu
Sumitomo Rubber Industries Ltd.
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