Appeal No. 1998-1862
Application No. 08/644,622
of Cornell, Aoshima and Cox.
Upon careful consideration of the opposing arguments
presented on appeal, we will not sustain the examiner’s
rejection.
Wolff, like appellant, discloses a natural rubber
composition that finds utility as engine mounts. Wolff
discloses
that the composition comprises conventional vulcanization
accelerators, such as sulfenamides, 2-mecaptobenzothiazol, and
thiurames (column 3, lines 51-56). Hence, Wolff renders
obvious appellant’s claimed accelerator component and sulfur
donor component. Also, while Wolff discloses the inclusion of
antioxidant agents, such as appellant’s p-phenylene diamine,
Wolff does not disclose the presently claimed blend of
p-phenylene diamine with zinc salt derivatives of mercap-
tobenzimidazole. However, since Cornell discloses
mercaptobenz-imidazole and zinc 2-mercaptobenzothiazole as
sulfur cure accelerators for rubber compositions (column 6,
lines 39 and 40), we find that it would have been prima facie
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