Etherification of bark extracts and condensed tannins

Details Etherification of bark extracts and condensed tannins Etherification of bark extracts and condensed tannins

1974-11-01

1976-01-13

Gotts, Lewis

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260124, 252 85, C07C 6976

Patent

active

039324885

ABSTRACT:
Polyphenolic extracts of coniferous tree barks and condensed tannins from wood such as quebracho extracts are etherified by reaction at elevated temperature in the presence of an alkaline catalyst with an olefin containing a double bond-activated carbonyl group having the structure ##EQU1## A particularly effective olefin is acrolein. The reaction products are produced in high yield, are water or alkali soluble and act among other uses as good dispersants.

REFERENCES:
patent: 3856845 (1974-12-01), Sears

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