Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Reexamination Certificate
2011-07-12
2011-07-12
Eashoo, Mark (Department: 1767)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
C525S326300, C526S247000, C526S249000, C526S253000, C526S254000, C526S255000, C528S481000, C528S503000
Reexamination Certificate
active
07977433
ABSTRACT:
A fluororubber composition including a polyol-crosslinkable fluororubber; a cross-linking accelerator comprising a quaternary ammonium salt; and a polyol crosslinking agent; wherein the weight ratio X (quaternary ammonium salt/polyol crosslinking agent) between the cross-linking accelerator and the polyol crosslinking agent is in a range of 0.40 to 0.60; and a production method of a cross-linked fluororubber product, comprising the steps of: previously polyol-crosslinking, as required, the fluororubber composition; and subsequently heat treating the polyol-crosslinked composition, in a temperature range of 200° C. to 300° C. for 0.1 to 48 hours. The fluororubber composition has surface has a lower friction coefficient, and the surface roughness of the cross-linked fluororubber product can be increased without applying a treatment to a mold.
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Machine translation of Sonoi et al., DE 3915318 A, retrieved Mar. 2, 2010.
Translation of Sonoi et al., JP 3915318, Aug. 2010.
Translation of Sonoi et al., DE 3915318, Aug. 2010.
Buie-Hatcher Nicole M
Crockett & Crockett, PC
Crockett, Esq. K. David
Eashoo Mark
NOK Corporation
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