Appeal No. 1997-1001
Application No. 08/369,202
Appealed claim 1 is representative and is reproduced
below:
1. An aqueous binder solution suitable for applying to
fiberglass as a binder, said binder having high binding
efficiency, said composition prepared by the
steps comprising:
(A) selecting an aqueous resole having a pH greater
than 7, prepared by reacting phenol with excess
formaldehyde under alkaline conditions;
(B) adding to said aqueous resole (A) urea in an
amount from about 20 to about 70 parts by weight based on
100 parts by weight of the phenol/formaldehyde resole
solids in component A and reacting to form a urea-
extended
prereact;
(C) dissolving into said prereact from about 1 to
about 10 weight percent melamine based on the weight of
the solids in the urea-extended phenol/formaldehyde
prereact (B);
wherein said alkaline resole contains sufficient
excess formaldehyde to react with said urea and said
melamine on a substantially equimolar basis.
The reference of record relied upon by the examiner is:
Coventry et al. (Coventry) 5,300,562 April 5,
1994
The appealed claims stand rejected under 35 U.S.C. § 103 2
as unpatentable over Coventry.
2The claims stand or fall together. See the brief at
page 5.
2
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