Cationic polymerization catalyst

Details Cationic polymerization catalyst Cationic polymerization catalyst

1976-09-02

1978-03-28

Holler, Alan

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

252431R, 526339, C08F 452, C08F 3606, C08F 3608

Patent

active

040815900

ABSTRACT:
High molecular weight polymers and highly unsaturated polymers (e.g., butyl rubber) are prepared by homopolymerizing and copolymerizing olefins, isoolefins, conjugated multiolefins, or mixtures of isoolefins and conjugated multiolefins with a catalyst system comprising an organoaluminum compound in conjunction with a cocatalyst selected from the group consisting of sulfur dioxide, sulfur trioxide, halogens, mixed halogens and hypohalides.

REFERENCES:
patent: 3123592 (1964-03-01), Gasparoni et al.
patent: 3361725 (1968-01-01), Parker et al.
patent: 3426007 (1969-02-01), Kennedy
patent: 3560458 (1971-02-01), Kennedy et al.
patent: 3694377 (1972-09-01), Kennedy et al.
patent: 4029866 (1977-06-01), Kennedy
Chemical Abstracts, 62, 5337 (g), (1965).

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