Process of dispersion polymerization of butadiene in propane or

Details Process of dispersion polymerization of butadiene in propane or Process of dispersion polymerization of butadiene in propane or

1989-06-19

1991-01-15

Bleutge, John C.

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

Synthetic resins

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

525244, 525271, 525314, 525252, C08F29704

Patent

active

049855050

ABSTRACT:
Butadiene is polymerized alone or with a monomer such as styrene in a dispersion in propane, butane or its mixtures with minor amounts of other C.sub.4 -C.sub.6 alkanes, e.g., n-pentane and a dispersant which is preferably a styrene/hydrogenated isoprene block copolymer to achieve stable dispersions at higher solids and butadiene levels possible with similar alkane dispersants.

REFERENCES:
patent: 3770712 (1973-11-01), Schwab
patent: 3948846 (1976-04-01), Waters
patent: 4098980 (1978-07-01), Markle et al.
patent: 4220738 (1980-09-01), Miki et al.
patent: 4386125 (1983-05-01), Shiraki et al.
patent: 4418185 (1983-11-01), Throckmorton et al.

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