Appeal No. 95-0365
Application 07/921,537
for compositions which comprise a metal drier and, therefore, we
affirm Rejection I. However, we agree with the appellants’ that
the claimed invention is not obvious over the applied prior and
we reverse Rejection II.
The claimed invention is directed to an air-curing
composition which comprises an acetoacetate functional polymer
and an end-blocked polyformaldehyde chain. The polyformaldehyde
becomes functional only when the end-blocking group is removed.
According to the specification the present compositions “provide
a delayed cure mechanism which can be used to prepare coating
compositions having a range of desired properties.”
Specification, p. 2, para. 1.
Rejection I
The examiner urges that the specification disclosure is only
enabling for compositions which contain a metal drier. Paper No.
5, p. 2, para. 1. To support his position, the examiner relies
on a statement in the specification that “[t]he autoxidation
process will take place without drier but it is impractically
slow, particularly at room temperature.” Specification, p. 12,
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