Halogenation of butadiene polymers in mixed solvents

Details Halogenation of butadiene polymers in mixed solvents Halogenation of butadiene polymers in mixed solvents

1981-11-12

1983-04-26

Levin, Stanford M.

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

Synthetic resins

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

525357, C08F 822

Patent

active

043813747

ABSTRACT:
Polybutadiene having high cis-1,4-configuration and dissolved in substantially anhydrous liquid organic solvent is reacted with chlorine, bromine or a mixture thereof. The solvent consists essentially of a mixture of one or more perhalogenated alkanes and one or more partially halogenated alkanes and fine particles of substantially thermoplastic halogenated polybutadiene precipitate from the solvent. The fine particles are separated from the bulk of the solvent.

REFERENCES:
patent: 2581927 (1952-01-01), Briant
patent: 2980656 (1961-04-01), Jones et al.
patent: 3293226 (1966-12-01), De Schrijver
patent: 3392161 (1968-07-01), Uelzmann
patent: 3798291 (1974-03-01), Dall'Asta et al.
S. Crawley and I. C. McNeill, "Preparation and Degradation of Head-to-Head PVC," Journal of Polymer Science, vol. 16, pp. 2593-2606 (1978).
N. Murayama and Y. Amagi, "On Head-to-Head Poly(vinyl chloride) and Poly(vinylidene chloride)," Polymer Letters, vol. 4, pp. 119-125 (1966).

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