Process for producing an isobutylene polymer having functional terminal end groups
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United States of America Patent
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Sep 26, 1989
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N/A
app pub date -
Feb 19, 1988
filing date -
Feb 20, 1987
priority date (Note) -
Expired
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Abstract
Isobutylene polymers having functional terminal end groups are prepared by polymerizing a cationic polymerizable monomer containing isobutylene by using: (A) as an initiator and chain transfer agent, an organic compound represented by the general formula (I): ##STR1## where X represents a halogen atom or RCOO-- group (in which R represents a hydrogen atom or a monovalent organic group), R.sup.3 represents a (n+1)-valent hydrocarbon group, R.sup.1, R.sup.2 represent respectively hydrogen atom or monovalent hydrocarbon group, R.sup.1 and R.sup.2 may be identifical or different with each other, R.sup.1 and R.sup.2 are not hydrogen atom in a case while R.sup.3 is an aliphatic hydrogen group, n is a positive integer; (B) as a catalyst, a Lewis acid; and (C) as a solvent, a hydrocarbon or halogenated hydrocarbon containing an organonitro compound.
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