Purification of trimethylolpropane

Details Purification of trimethylolpropane Purification of trimethylolpropane

1974-10-04

1976-05-11

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 2924

Patent

active

039564061

ABSTRACT:
Trimethylolpropane prepared in alkali solution by the condensation of n-butyraldehyde and formaldehyde is purified by extraction of the trimethylolpropane from the process effluent with a first solvent and the subsequent addition of a second solvent to the extract to further reduce the content of water and alkali salts. The first solvent may be recovered from the trimethylolpropane containing mixture by a simple distillation. The remaining mixture of trimethylolpropane and the second solvent may be separated by settling and decanting. In a preferred embodiment isobutanol is the first solvent and xylene is the second solvent.

REFERENCES:
patent: 2806890 (1957-11-01), Gottesman
patent: 2806891 (1957-11-01), Gottesman et al.
patent: 3183274 (1965-05-01), Robeson

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