Appeal No. 2002-0701
Application 09/201,269
examples in which the polydispersities are 25.75, 68.26 and
105.6, divinyl benzene is reacted with two monoethylenically
unsaturated monomers, i.e., styrene and butyl acrylate (col. 12,
lines 21-22). Thus, Campbell’s teaching that polymerizing the
diethylenically unsaturated monomer with at least one
monoethylenically unsaturated monomer produces a hyperbranched
polymer (col. 3, lines 6-23) indicates that the polymers in these
examples are hyperbranched.
The polymers of both Campbell (col. 3, lines 6-15; col. 12,
lines 21-22) and Puschak (col. 4, line 33 - col. 4, line 8) are
obtained by reacting divinyl benzene with at least one
monoethylenically unsaturated monomer. Hence, Campbell’s
teaching that polymers having polydispersities of 25.75, 68.26
and 105.6 and insoluble gel formation are obtained when the
diethylenically unsaturated monomer is divinyl benzene in an
amount of 21.16-22.93 wt% would have fairly suggested, to one of
ordinary skill in the art, obtaining Puschak’s desired gelling by
using Puschak’s divinyl benzene in an amount at the upper end of
Puschak’s disclosed 0.1-25 wt% range (col. 5, line 4). As
indicated by Campbell col. 3, lines 6-15), the polymer so
produced would be branched.
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