Appeal No. 1998-2646
Application No. 08/685,365
includes the use of an insertion catalyst and one or more
polymer resins selected from a specified group which includes
vinyl ester resins. This appealed subject matter is
adequately illustrated by independent claim 1 which reads as
follows:
1. A composition comprising a miscible resin blend of:
(a) an epoxy-extended polyetherester resin prepared by
(1) reacting a polyether polyol with a dicarboxylic
acid, an anhydride, or a diol diester in the
presence of an insertion catalyst to produce
an acid-terminated polyetherester resin; and
(2) reacting the acid-terminated polyetherester
resin with an epoxy compound to produce the
epoxy-extended polyetherester resin; and
(b) one or more polymer resins selected from the group
consisting of vinyl esters, isophthalate resins,
orthophthalate resins, dicyclopentadiene (DCPD)
resins, bisphenol A resins, propylene glycol-maleate resins,
and chlorendic anhydride resins.
The references relied upon by the Examiner as evidence of
obviousness are:
Craigie 4,336,344 June 22, 1982
Stahl et al. (Stahl) 5,196,482 Mar. 23, 1993
Yang et al. (Yang) 5,436,314 July 25, 1995
Bertsch 580,114 Jan. 26, 1994
(European Patent Application)
2
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