Isobutylene polymer having unsaturated group and preparation thereof
AssigneeKanegafuchi Chemical Industry Co., Ltd.
InventorsKoji Noda, Hiroshi Fujisawa, Kazuya Yonezawa
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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.
Claims5
An isobutylene polymer having an unsaturated group at a polymer chain end and comprising 1.1 to 5 units per molecule on the average of the formula:
- ##STR10## wherein Q is a C.sub.1 -C.sub.30 divalent organic group.
Dependencies are inferred from the claim text.