Appeal No. 97-1848
Application 08/338,074
Claim 21: An aqueous-based curable liquid [clear ] film- 3
forming composition comprising
(1) 50 to 90 percent by weight based on weight of
resin solids of a material containing a plurality of
terminal or pendant urea groups of the structure:
R
*
X)C)N)H
5
O
*
where X is ))N and R is
[i] H or
[ii] alkyl of 1-6 carbon atoms or
[iii] R is bonded to X and forms part of a 5 or 6
membered ring; and [4]
(2) 10 to 50 percent by weight based on weight of
resin solids of an aminoplast crosslinking agent
containing methylol and/or methylol ether groups;
The word "clear" should be present to provide an antecedent for "said clear3
film-forming composition" in subsequent paragraphs [a] and [b].
The definition of X may be incomplete insofar as the case where R is not bonded4
to X to form a 5 or 6 membered ring. We note that the specification also may be
somewhat incomplete in this respect, defining X simply as ))N (page 2, line 10 and page
3, line 2). Given that the terminal or pendant group is said to be a urea group, we
have construed the definition of X to be
H
*
))N
in the case where R is not bonded to X. We leave it to the examiner and applicants to
look into this matter further when proceedings are resumed before the examiner following
this appeal.
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