Appeal 2007-0618
Application 10/618,936
products are obtained by a free radical polymerization of at least three
specified monomers (Br. 2). Further details of the invention can be gleaned
from representative independent claim 1, which is reproduced below:
1. A silane-containing polyvinyl alcohol comprising a
completely hydrolyzed or partially hydrolyzed vinyl ester copolymer
having a degree of hydrolysis of from 75 to 100 mol%, obtained by
free radical polymerization of
a) one or more vinyl esters of straight-chain or branched
alkane carboxylic acids having 1 to 18 carbon atoms, of which an
amount of from 1 to 30 mol%, based on total polymer, are one or
more 1-alkylvinyl esters of C1-6 carboxylic acids, where the 1-alkyl
groups are C1-6 alkyl radicals;
b) from 0.01 to 10 mol% of one or more silane-containing,
ethylenically unsaturated monomers, and
c) optionally further comonomers copolymerizable
therewith, and hydrolysis of the polymers obtained thereby.
The Examiner has relied upon the following references as evidence of
obviousness:
Maruyama US 4,617,239 Oct. 14, 1986
Schilling US 4,879,336 Nov. 07, 1989
ISSUES ON APPEAL
Claims 1-15 stand rejected under 35 U.S.C. § 103(a) as unpatentable
over Schilling in view of Maruyama (Answer 3).1
1 We refer to and cite from the “Supplemental Examiner’s Answer” dated
Jul. 10, 2006.
2
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