Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Polymers from only ethylenic monomers or processes of...
Patent
1994-02-17
1995-09-05
Zitomer, Fred
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Polymers from only ethylenic monomers or processes of...
5253337, 5253339, 525353, 525383, 526133, 5263487, C08F 836, C08F 238
Patent
active
054480000
ABSTRACT:
A one-pot method of preparing sulfonic acid-terminated polyisobutylene by sulfonation with acetyl sulfate of living polyisobutylene in a single step. The method permits preparation of sulfonated telechelic polyisobutylenes (STPs) by "inifer" initiated carbocationic polymerization of isobutylene with Lewis acid to form a polymer, followed by the addition in the same reaction vessel of acetyl sulfate at the polymerization temperature or the decomposition temperature of the complex.
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Gullapalli Pratap
Heller John P.
Duggan Donovan F.
Myers Jeffrey D.
New Mexico Tech Research Foundation
Peacock Deborah A.
Zitomer Fred
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