METHOD FOR HALOGENATING ISOBUTENE-ISOPRENE COPOLYMER

Title:

METHOD FOR HALOGENATING ISOBUTENE-ISOPRENE COPOLYMER

Document Type and Number:

WIPO Patent Application WO/2022/060084

Kind Code:

A1

Abstract:

The present invention relates to a method for halogenating an isobutene-isoprene copolymer. By means of the method of the present invention, halogenated hydrogen, which is a by-product, can be quickly regenerated into a halogenating agent to be reused. Ultimately, by increasing the proportion of halogenating agent used in the reaction and inhibiting the realignment of a secondary allyl halogen functional group, a halogenated isobutene-isoprene copolymer having high secondary allyl halogen functional group content can be prepared. The halogenated isobutene-isoprene copolymer prepared in accordance with the present invention can be effectively used in a cross-linking reaction with other rubbers and thus is useful on an industrial scale.

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Inventors:

BAEK JONG YEOL (KR)
JEONG MOON GON (KR)
CHOI GYEONG SHIN (KR)
KIM WON HEE (KR)

Application Number:

PCT/KR2021/012584

Publication Date:

March 24, 2022

Filing Date:

September 15, 2021

Export Citation:

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Assignee:

LG CHEMICAL LTD (KR)

International Classes:

C08F8/20; C08C19/14; C08C19/18; C08F8/24; C08F210/12; C08F236/08

Foreign References:

JPH0246042B2	1990-10-12
US6232409B1	2001-05-15
KR20080066787A	2008-07-16
KR20010052247A	2001-06-25
KR20140041860A	2014-04-04
JP2020513055A	2020-04-30

Other References: