Appeal No. 2004-0800
Application No. 08/362,547
2) from 30 to 90 parts by weight of compounds containing
at least two isocyanate-reactive hydrogen atoms, having
molecular weights of 400 to 10,000, and containing
branched chains;
in the presence of
3) one or more C1 to C6 hydrocarbons as the sole blowing
agents;
4) from 10 to 60 parts by weight of flameproofing agents;
and
5) from 10 to 20 parts by weight of compounds containing
at least two isocyanate-reactive hydrogen atoms and
having molecular weights of 32 to 399 as crosslinking
agents;
and, optionally,
6) auxiliary agents and additives which are selected from
the group consisting of emulsifiers, foam stabilizers,
catalysts, reaction retarders, cell regulators,
pigments, dyes, stabilizers against ageing and
weathering, plasticizers, fungistatic agents,
bacteriostatic agents and fillers;
wherein the parts by weight of components (2), (4) and (5) totals
100 parts by weight, and wherein the reaction is conducted at an
isocyanate index of 200 to 600.
The examiner relies upon the following reference as evidence
of obviousness:
Volkert 5,096,933 Mar. 17, 1992
The present application is related to parent application,
U.S. Application No. 08/362,547. An appeal was taken to this
Board in the parent application (Appeal No. 1998-3149), and the
Board affirmed the examiner's rejection of the appealed claims
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