Appeal No. 1996-2336
Application 08/270,345
size is produced. Such a desired particle size can be any
desired size including that of the particles made in Graiver’s
examples 9 and 10.
For the above reasons, we affirm the rejection under 35
U.S.C. § 102(b).
Rejection of claims 2 and 3 under
35 U.S.C. § 103 over Graiver
In Graiver’s examples 9 and 10, the cyclicsiloxane,
nonionic surfactant and water are added to
dodecylbenzenesulfonic acid and water while mixing at 85EC.
In view of Graiver’s teaching that temperature affects the
rate of polymerization (page 6, lines 44-49), one of ordinary
skill in the art would have been motivated to heat both the
dodecylbenzenesulfonic acid catalyst-containing component and
the cyclicsiloxane-containing component to the mixing
temperature to provide better control over the temperature of
the polymerization. In light of Graiver’s disclosure that the
nonionic surfactant, with which the cyclicsiloxane is mixed
prior to being added to the catalyst, does not catalyze the
polymerization (page 6, lines 14-15), such a person would have
had a reasonable expectation of success in obtaining the
10
Page: Previous 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Next
Last modified: November 3, 2007