Para-alkylstyrene/isoolefin copolymers functionalized with an am

Details Para-alkylstyrene/isoolefin copolymers functionalized with an am Para-alkylstyrene/isoolefin copolymers functionalized with an am

1993-04-06

1995-10-24

Henderson, Christopher

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

5253336, 525350, 525380, C08F 834, C08F 832

Patent

active

054611180

ABSTRACT:
Functionalized copolymers of a C.sub.4 to C.sub.7 iso-olefin and para-alkylstyrene are provided which are prepared by a nucleophilic displacement of at least a portion of benzylic halogen present in the alkyl styrene moiety with an S--R.sup.2 (OH).sub.n nucleophile, R.sup.2 being C.sub.1 to C.sub.20 hydrocarbyl and n being an integer from 1 to 10. Polymer blends based on a mixture of a polar polymer and a functionalized isobutylene/para-alkylstyrene copolymer are also provided, wherein at least a portion of the benzylic halogen present in the alkyl styrene moiety is displaced by OH, S--R.sup.2 (OH).sub.n or N(H).sub.2-m ((R3)OH).sub.m, R.sup.3 being C.sub.1 to C.sub.20 hydrocarbyl and m being 1 or 2.

REFERENCES:
patent: 5162445 (1992-11-01), Powers

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