Isobutylene polymer having unsaturated group and preparation thereof
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United States of America Patent
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Mar 1, 1994
Grant Date -
N/A
app pub date -
Apr 15, 1991
filing date -
Apr 16, 1990
priority date (Note) -
Expired
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Abstract
An isobutylene polymer having an unsaturated group and comprising more than one unit per molecule on the average of the formula: ##STR1## wherein R.sup.1, R.sup.2 and R.sup.3 are the same or different and each a hydrogen atom or a C.sub.1 -C.sub.8 alkyl group, R' and R' are the same or different and each a hydrogen atom, a methyl group or an ethyl group, and Q is a C.sub.1 -C.sub.30 divalent organic group, which provides a cured material having improved weather resistance.
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