Appeal No. 1999-2760
Application 08/773,304
or used as a binder for the abrasive. Claim 23 is
representative of the subject matter in issue, and reads:
23. A polishing sheet comprising a support and an
abrasive layer formed thereon directly or with an adhesive
layer interposed therebetween, characterized in that
said abrasive layer comprises abrasive grains and a
binder which is a thermosetting or photo-curable adhesive
composition based on at least one resin selected from the
group consisting of,
(A) an ethylene-vinyl acetate copolymer,
(B) a copolymer of ethylene, vinyl acetate, and an
acrylate or methacrylate monomer,
(C) a copolymer of ethylene, vinyl acetate, and maleic
acid or maleic anhydride,
(D) a copolymer of ethylene, an acrylate or methacrylate
monomer, and maleic acid or maleic anhydride, and
(E) an ionomer resin in the form of an ethylene-
methacrylic acid copolymer whose molecules are bonded by a
metal ion,
the abrasive grains being bound with a cured product of
said adhesive composition, and wherein said thermosetting or
photo-curable adhesive composition further comprises 0.1 to 10
parts by weight of a photosensitizer added per 100 parts by
weight of said resin.
The claims on appeal are reproduced, with some minor errors,
in
the revised appendix filed on December 6, 1999.
The references applied in final rejection are:
2
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