Process for the separation of 4,4'-dichlorodiphenylsulfone

Details Process for the separation of 4,4'-dichlorodiphenylsulfone Process for the separation of 4,4'-dichlorodiphenylsulfone

1976-01-19

1977-03-15

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260459R, C07C14706

Patent

active

040124517

ABSTRACT:
Pure 4,4'-dichlorodiphenylsulfone is separated from the reaction mixture containing 4,4'-dichlorodiphenylsulfone and the isomers thereof by adding the reaction mixture to the mixture of trichloroethylene or tetrachloroethylene, and water to extract 4,4'-dichlorodiphenylsulfone with said organic solvent and cooling the organic solution separated from the water layer to precipitate pure 4,4'-dichlorodiphenylsulfone.

REFERENCES:
patent: 2224964 (1940-12-01), Huismann et al.
patent: 3334146 (1967-08-01), Pitts et al.
patent: 3402204 (1968-09-01), Plummer et al.
patent: 3673259 (1972-06-01), Rosin

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