Continuous reaction for preparation of arylene sulfide polymer

Details Continuous reaction for preparation of arylene sulfide polymer Continuous reaction for preparation of arylene sulfide polymer

1976-03-30

1978-01-03

Marquis, Melvin P.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

260 79, C08G 7516

Patent

active

040666328

ABSTRACT:
Continuous production of arylene sulfide polymer is provided in a series of two or more reactors. A compound serving as a sulfur source is contacted in an organic amide with a dihalo aromatic compound and, optionally, at least one polymerization modifying compound to produce arylene sulfide polymer. The reaction mixture boils in each of a series of reaction zones to partially concentrate the mixture by removal of water and diluent and to remove polymerization heat. The degree of removal of water and organic amide is regulated to control the pressure in each boiling reactor so that polymer slurry is induced to flow to each subsequent reaction zone without pumping. Preferably an ascending reactor temperature profile is employed.

REFERENCES:
patent: 3756993 (1973-09-01), Green et al.
patent: 3956060 (1976-04-01), Scoggin

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