Appeal No. 95-4754
Application No. 08/111,905
Appellants’ invention is directed to a thermoplastic
composition comprising the copolymer prepared by polymerizing
an unsaturated nitrile in the presence of a rubber polymer and
containing at least 50% by weight of the residue of a nitrile
moiety. In the alternative the thermoplastic copolymer may be
one obtained from copolymerizing an unsaturated nitrile in the
absence of a rubbery polymer. In either case the claimed
subject matter requires the presence of 2,4-di-t-amyl-6-[1-
(3,5-di-t-amyl-2-hydroxyphenyl)ethyl]phenylacrylate. Claim 7
is illustrative of appellants’ invention and is reproduced
below.
7. A thermoplastic resin composition comprising
(a) a resin prepared by copolymerizing at least an
unsaturated nitrile compound as a polymerizing component in
the presence of a rubber polymer and containing at least 50%
by weight of a structural unit derived from the unsaturated
nitrile compound, or a resin prepared by copolymerizing at
least an unsaturated nitrile compound as a polymerizing
component in the absence of a rubber polymer, and
(b) 2,4-di-t-amyl-6-[1-(3,5-di-t-amyl-2-hydroxy-
phenyl)ethyl]phenylacrylate.
THE REFERENCE OF RECORD
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