Recovery of o-chlorobenzilidene malononitrile from finely divide

Details Recovery of o-chlorobenzilidene malononitrile from finely divide Recovery of o-chlorobenzilidene malononitrile from finely divide

1978-08-01

1979-02-20

Torrence, Dolph H.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C12170

Patent

active

041407105

ABSTRACT:
A method of recovering o-chlorobenzilidene malononitrile from finely divi particulate mixtures thereof with colloidal silica. The mixture is contacted with a solvent such as methylene chloride, in which the o-chlorobenzilidene malononitrile is highly soluble and the colloidal silica is insoluble, the resulting solution is filtered to remove the insoluble colloidal silica, and the o-chlorobenzilidene malononitrile is crystallized from the filtrate.

REFERENCES:
patent: 3549683 (1970-12-01), Rosin
patent: 3963770 (1976-06-01), Knapp

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