Process for preparation of a polymer having reactive terminal group
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United States of America Patent
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Sep 21, 1993
Issued Date -
N/A
app pub date -
Aug 27, 1992
filing date -
Jun 6, 1989
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Abstract
Disclosed is a process for preparing an isobutylene-type allyl-terminated polymer, the process comprising mixing: (A) a cationically polymerizable isobutylene-containing monomer; (B) an organic compound serving as an initiator and concurrently as a chain transfer agent, the organic compound being represented by the formula (I) ##STR1## (C) at least one Lewis acid selected from the group consisting of (C.sub.2 H.sub.5).sub.2 AlCl, (C.sub.2 H.sub.5)AlCl.sub.2, SnCl.sub.4 and TiCl.sub.4 ; and (D) a compound serving as an end capping agent, the compound being represented by the formula (II) ##STR2## whereby the cationically polymerizable monomer is polymerized.
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