Appeal No. 95-4939
Application No. 08/096,345
(d) a condensate of said compound (c)
with said compound (a) or (b);
(iii) greater than zero to 30 parts by weight
of at least one finely divided filler;
(iv) a catalytic amount of a compound for
promoting the reaction of components (i) to (iii);
(II) a nonaqueous liquid continuous phase selected
from the group consisting of ethylene glycol, propylene
glycol, polypropylene glycol, polyethylene glycol, copolymers
of ethylene and propylene glycols, condensates of
polypropylene glycol with polyols, condensates of polyethylene
glycol with polyols, condensates of copolymers of ethylene and
propylene glycols with polyols, alcohol alkoxylates, and
alkylphenol alkoxylates; and
(III) silica having a methanol wettability of from
30 to 70 percent.
The examiner relies upon the following references as
evidence of obviousness:
Hill et al. (Hill) 499,364 Aug. 19, 1992
(European patent publication) (filed May 8, 1989)
McGee et al. (McGee) 341,952 Nov. 15, 1989
(European patent publication)
Appellants' claimed invention is directed to a
composition that finds utility as a defoamer or antifoam agent
in the pulp and paper industry, paints and latex, cleaning
detergents, etc. The composition comprises (I) a reaction
product of a polyorgano-
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