Stabilized slurries of isoolefin polymers

Details Stabilized slurries of isoolefin polymers Stabilized slurries of isoolefin polymers

1981-02-23

1982-11-09

Jacobs, Lewis T.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524473, 524792, 524793, 524923, C08K 501

Patent

active

043585604

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: 2356128 (1944-08-01), Thomas et al.
patent: 3261788 (1966-07-01), Carter et al.
patent: 3904708 (1975-09-01), Kennedy et al.
patent: 4098980 (1978-07-01), Markle et al.
patent: 4252710 (1981-02-01), Powers et al.

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