Process for purification of non-ionic emulsifiers

Details Process for purification of non-ionic emulsifiers Process for purification of non-ionic emulsifiers

1979-11-30

1982-03-30

Lovering, Richard D.

Compositions

Preservative agents

Anti-corrosion

252351, 252357, 252DIG1, 568609, 568621, B01F 1744, B01F 1742, C07C 4311, C07C 43205

Patent

active

043223125

ABSTRACT:
Non-ionic emulsifiers which are of the type comprising addition products of alkylene oxides and compounds containing hydroxyl groups, carboxyl groups or carboxamide groups and are free from impurities originating from their preparation are obtained by dissolving the reaction mixtures in organic, water-immiscible organic solvents, treating the solutions with water, separating off the aqueous layer and, if appropriate, isolating the emulsifiers by removing the organic solvents.

REFERENCES:
patent: 2149498 (1939-03-01), Bludworth
patent: 2213477 (1940-09-01), Steindorff et al.
patent: 2454541 (1948-11-01), Bock et al.
patent: 2930778 (1960-03-01), Boettner
Nonionic Surfactants, Edited by Schick, Marcel, Dekker, Inc., New York, 1967, pp. 125, 126, 157, 401, 416 and 417.

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