Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Reexamination Certificate
2011-03-08
2011-03-08
Ridley, Basia (Department: 1725)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
C524S612000, C524S555000, C524S413000, C524S418000, C152S526000, C152S537000
Reexamination Certificate
active
07902289
ABSTRACT:
The present invention provides a rubber composition for coating a belt layer steel cord, which inhibits separation from the steel cord when running the tire. Specifically, the present invention provides a rubber composition for coating a belt layer steel cord comprising (A) 2.5 to 4 parts by weight of sulfur, (B) 0.5 to 5 parts by weight of resorcin or modified resorcin condensate, (C) 0.3 to 3 parts by weight of partial condensate of hexamethylol melamine pentamethyl ether or partial condensate of hexa methoxy methylol melamine, and (D) organic acid cobalt, based on 100 parts by weight of a rubber component; wherein the cobalt content in the organic acid cobalt (D) is 0.05 to 0.8 part by weight based on 100 parts by weight of the rubber component, and a steel cord obtained by coating with the rubber composition.
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Birch & Stewart Kolasch & Birch, LLP
Kollias Alexander C
Ridley Basia
Sumitomo Rubber Industries Ltd.
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