Title:
BROMINATED POLYISOBUTYLENE-BASED POLYMER AND PRODUCTION METHOD
Document Type and Number:
Japanese Patent JP2020152739
Kind Code:
A
Abstract:
To provide a brominated polyisobutylene-based polymer having a higher bromide functional group content than that of a conventionally known polymer, exhibiting excellent vulcanization reactivity, and having an excellent balance between a rubber strength and a gas barrier property, and to provide a method of producing the brominated polyisobutylene-based polymer.SOLUTION: The brominated polyisobutylene-based polymer includes a monomer unit obtained by brominating a methylstyrene group. In the brominated polyisobutylene-based polymer, 65 mol% or more of the methylstyrene group is brominated, and the rate of a bromomethyl styrene group in a constituent monomer unit is 1.0 mol% or more.SELECTED DRAWING: None
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Inventors:
IKARI YOSHIHIRO
Application Number:
JP2017137291A
Publication Date:
September 24, 2020
Filing Date:
July 13, 2017
Export Citation:
Assignee:
KANEKA CORP
International Classes:
C08F8/20; C08F297/00