Process for preparing carboxylic acid esters of hexitols

Details Process for preparing carboxylic acid esters of hexitols Process for preparing carboxylic acid esters of hexitols

1983-11-03

1985-12-31

Sneed, Helen M. S.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C09F 508, C09F 710, C11C 300

Patent

active

045620075

ABSTRACT:
A process is described for preparing carboxylic acid esters of hexitols by rapidly heating the hexitol and carboxylic acid to 210.degree. to 250.degree. C. in the presence of alkaline catalysts, continuing the esterification reaction at this temperature, while simultaneously driving off the water formed, until an acid number of 2 to 15 has been reached, and then rapidly cooling down to at least 145.degree. C. This process produces hexitol carboxylates which are essentially free of anhydro compounds and have good color quality. The hexitol carboxylates are surface-active substances, in particular high-grade emulsifiers and lubricants.

REFERENCES:
patent: 2322820 (1943-06-01), Brown
patent: 2322821 (1943-06-01), Brown
patent: 2996387 (1961-08-01), Radlove
patent: 2997492 (1961-08-01), Martin
patent: 3579547 (1971-05-01), Traxler
patent: 3637774 (1972-01-01), Babayan et al.
patent: 4065418 (1977-12-01), Foulks, Jr. et al.
patent: 4297290 (1981-10-01), Stockburger
patent: 4363763 (1982-12-01), Peterson

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