Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...
Patent
1995-05-03
1997-08-12
Buttner, David
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Mixing of two or more solid polymers; mixing of solid...
525209, 525232, 525235, C08L 900, C08L 1502
Patent
active
056566948
ABSTRACT:
Vulcanizable blends containing a halogenated copolymer of a C.sub.4 -C.sub.7 isomonoolefin and para-alkylstyrene mixed with one or more olefinically unsaturated elastomeric polymers are disclosed. Cure is preferably effected using zinc stearate as a curative at levels below about 3.0 phr which gives rise to vulcanizates having selective interpolymer addition of benzylic halogen present in the halogenated copolymer to the double bond of the unsaturated polymer with no significant self curing of the halogenated polymer taking place.
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patent: 5376438 (1994-12-01), Costemalle
patent: 5385459 (1995-01-01), Graves
patent: 5397837 (1995-03-01), Arjunan
"Exxon Bromo XP-50 Rubber Compounding" Exxon Chemical Company Brochure, May, 1992.
"Achieving Efficient Co-Cure", Gardner et al., Nov. 3-6, 1992, Presented at a meeting of the Rudder Div. of ACS.
Frechet "Electrophilic Addition of Brominated Poly(isobutylene-4 methyl styrene) to Olefines Catalyzed by Zinc Salts" Rubber Chemistry and Technology 66(1) Mar. 1993 pp. 98-108.
Bielski "Electrophilic Aromatic Substitution in the Curing of Brominated Poly(isobutylene 4 methylstyrene" Journal of Polymer Science: Polymer Chemistry 31(3) Mar. 1993 pp. 755-762.
Frechet Jean M. J.
Li Dongming
Powers Kenneth William
Wang Hsien-Chang
White Donald Andrew
Buttner David
Exxon Chemical Patents Inc.
Kurtzman Myron B.
Reid Frank E.
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