Crystallization process

Details Crystallization process Crystallization process

1975-10-23

1977-04-05

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260543H, C07C14708

Patent

active

040162109

ABSTRACT:
A process is provided for the crystallization of bis-(4-chlorophenyl) sulphone from a reaction mixture in which it is formed by reacting chlorobenzene sulphonic acid and chlorobenzene which comprises (i) forming a crystallization liquor from the reaction mixture by adjusting the weight ratio of chlorobenzene to chlorobenzene sulphonic acid of the reaction mixture so as to maximize the quantity of bis-(4-chlorophenyl) sulphone which can crystallize from the liquor at a desired crystallization temperature, and (ii) allowing the bis-(4-chlorophenyl) sulphone to crystallize from the crystallization liquor at the temperature.

REFERENCES:
patent: 2556429 (1951-06-01), Lee
patent: 2593001 (1952-04-01), Bender et al.
patent: 3297766 (1967-01-01), Bradley et al.
patent: 3383421 (1968-05-01), Fox et al.
patent: 3579590 (1971-05-01), Davis
patent: 3632642 (1972-01-01), Rosin et al.
patent: 3855312 (1974-12-01), Horner

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