Appeal No. 96-1641
Application No. 08/225,036
1) from about 50 to about 60% by weight, based on
total weight of a), of polyphenyl polymethylene
polyisocyanate,
2) from about 40 to about 50% by weight, based on
total weight of a), of an isomer mixture of diphenylmethane
diisocyanate which includes
i) from about 4 to about 30% by weight, based
on a)2), of 2,4'-diphenylmethane diisocyanate and
ii) from about 70 to about 96% by weight, based
on a)2), of 4,4'-diphenylmethane diisocyanate and
b) at least one polyol having from about 1 to 8
hydroxyl groups and a molecular weight of from about 62 to
about 6000 in amounts such that the ratio of equivalents of
hydroxyl groups to equivalents of isocyanate groups is from
about 0.001:1.0 to about 0.20:1.0.
THE REFERENCES
The references of record relied upon by the examiner are:
Horacek et al. (Horacek) 4,546,039 Oct.
8, 1985
Watts et al. (Watts) 5,070,114 Dec. 3,
1991
THE REJECTIONS
Claims 1 to 12 stand rejected under 35 U.S.C. § 102(b) as
anticipated by Watts.
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