Appeal No. 1997-0282
Application No. 08/423,438
Gergen discloses a hydroxy-functionalized selectively
hydrogenated block copolymer of a vinyl aromatic hydrocarbon
and a conjugated diene, which can be crosslinked in a
conventional manner. See Answer, page 4, with Brief, page 2.
As argued by appellant (Brief, page 2), however, Gergen does
not teach, nor would have suggested, a moisture-curable,
isocyanate-capped hydroxy-functionalized selectively
hydrogenated block copolymer of a vinyl aromatic hydrocarbon
and a conjugated diene. To remedy this deficiency, the
examiner relies on the disclosure of Markevka. See Answer,
page 4. According to the examiner, Markevka would have
suggested capping the hydroxy-functionalized selectively
hydrogenated block copolymer of Gergen with isocyanate
compounds to form the claimed block copolymer. See Answer,
pages 4 and 5. We disagree.
As correctly indicated by appellant (Brief, page 3),
Markevka is directed to forming an adhesive composition
comprising, inter alia, an isocyanate terminated prepolymer
and block copolymers, such as those described in Gergen.
Thus, it appears that the applied prior art as a whole would
4
Page: Previous 1 2 3 4 5 6 Next
Last modified: November 3, 2007