Stabilized slurries of isoolefin polymers

Details Stabilized slurries of isoolefin polymers Stabilized slurries of isoolefin polymers

1979-08-02

1981-02-24

Jacobs, Lewis T.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C08K 502

Patent

active

042527104

ABSTRACT:
Polymerization slurries of elastomeric isoolefin homopolymers and copolymers, such as butyl rubber, in diluents such as methyl chloride, are effectively stabilized against agglomeration of polymer particles through addition of minor proportions of (i) a preformed copolymer stabilizer having both a lyophobic or lyophilic portion, or (ii) an in situ formed stabilizer from a functional lyophilic stabilizer precursor capable of copolymerizing or otherwise chemically bonding with the polymer product. Agglomeration of polymer products is effectively prevented, yielding a number of significant processing advantages. The process is especially adaptable to the production of isobutylene-isoprene butyl rubber.

REFERENCES:
patent: 3261788 (1966-07-01), Carter et al.
patent: 3904708 (1975-09-01), Kennedy et al.
patent: 4098980 (1978-07-01), Markle et al.

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