Appeal No. 1997-1001
Application No. 08/369,202
in which an aqueous alkaline resole resin is modified at a
resin manufacturing site by mixing with “two or more
nitrogenous reactants” (column 5, lines 3-4) including, inter
alia, ammonia, urea, and melamine (column 5, lines 6-17). The
weight ratio of ammonia (the “first” nitrogenous reactant) to4
the unmodified resole resin may be as low as 1:100 and when
urea is the “second” nitrogenous reactant, the mole ratio of
urea to the free formaldehyde in the aqueous resole solution
is preferably about 1:1. See column 5, line 23 of Coventry.
Based on these disclosures, we agree with the examiner that
Coventry fairly suggests the combined use of ammonia , urea, 5
and melamine as “first” and “second” nitrogenous reactants for
addition to and reaction with Coventry’s aqueous resole resin
composition in proportions which overlap the proportions
required for appellants’ claimed urea and melamine reactants.
the phenolic binder for its ultimate use with fiberglass,
curing catalysts, lubricants, and silane adhesion promoting
compounds may be added to the premix “just before use.” See
column 1, lines 44-48 and column 5, line 48 to column 6, line
5 of Coventry.
4See column 5, line 18 of Coventry.
5The appealed “comprising” claims do not exclude the use
of an ammonia reactant.
4
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