Appeal No. 2001-2093
Application No. 09/054,134
The subject matter on appeal relates to a process for
preparing strongly basic anion exchange polymers comprising
crosslinked vinylaromatic polymers. According to the appellants
(specification, page 2, lines 16-18), “superior strongly basic
anion exchangers...are formed if, during the quaternization,
certain temperature and pH conditions are employed.” Further
details of this appealed subject matter are recited in
representative claim 5 reproduced below:
5. A process for the preparation of strongly
basic anion exchange polymers comprising cross-linked
vinylaromatic polymers comprising reacting weakly
basic anion exchange polymers bearing aromatic
(tertiary amino)methyl groups with ethylene oxide,
wherein the weakly basic anion exchange polymers are
reacted with ethylene oxide at 70 to 75°C and at a pH
of 7 to 11.
The examiner relies on the following prior art references
as evidence of unpatentability:
Günter 4,675,180 Jun. 23, 1987
Carte et al. DE 1,054,715 Apr. 9, 1959
(DE ’715)(published
German application)
In addition, the examiner relies on the following prior art
references to rebut the appellants’ arguments (examiner’s answer
of Dec. 27, 2000, paper 25, page 3):
Buske 4,232,125 Nov. 4, 1980
2
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