Appeal No. 95-5080
Application 07/952,122
§ 112 as failing to provide an adequate written description of
the invention. We reverse this rejection.
The specification at page 6 identifies examples of
graft polymers as methacrylate/butadiene/styrene, acrylate/
methacrylate/butadiene/styrene or acrylonitrile/butadiene/styrene
polymers.
The examiner takes the position that one of ordinary
skill in the art cannot prepare, from this noted disclosure,
graft polymers in the absence of an identification of the polymer
backbone and the monomers grafted thereon. We cannot agree with
the examiner's position.
The last named polymer, acrylonitrile/butadiene/styrene
is better known as an ABS resin. An ABS resin by definition is4
a true graft polymer consisting of an elastomeric polybutadiene
or rubber phase, grafted with styrene and acrylonitrile monomers
for compatibility, dispersed in a rigid styrene-acrylonitrile
(SAN) matrix. The other named examples also include butadiene
and styrene in combination with an acryl monomer. In our view,
one of ordinary skill in this art would clearly know that the
See The Condensed Chemical Dictionary, Ninth Ed., page 2,4
1977 (copy enclosed).
4
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