Process for reducing the levels of fatty acid contaminants in po

Details Process for reducing the levels of fatty acid contaminants in po Process for reducing the levels of fatty acid contaminants in po

1992-03-26

1993-02-23

Albrecht, Dennis

Compositions

Fluent dielectric

N-containing

252357, 252529, 252551, 536 53, 554 61, 554 65, 554 68, C07C23102, C07H 702, C11D 152, C11D 304

Patent

active

051887690

ABSTRACT:
The synthesis of polyhydroxy fatty acid amide surfactants exemplified by the compound C.sub.11 H.sub.23 C(O)N(CH.sub.3)CH.sub.2 [CHOH].sub.4 CH.sub.2 OH by reacting a fatty acid ester with an N-alkyl sugar amine can result in contamination of the product surfactant by residual sources of fatty acids. These residual fatty acids may be unacceptable in high sudsing detergent compositions, such as dishwashing liquids, especially with Ca or Mg cations. The process of this invention reacts such contaminants with alkyl amines or, especially, ethanolamine, to convert them into fatty alkyl- or alkanolamides, which are quite acceptable in fully-formulated detergent compositions for home or industrial use.

REFERENCES:
patent: 1985424 (1934-12-01), Piggott
patent: 2016962 (1935-10-01), Flint
patent: 2429445 (1947-10-01), Young
patent: 2653932 (1953-09-01), Schwartz
patent: 2662073 (1953-12-01), Meltretter
patent: 2703798 (1955-03-01), Schwartz
patent: 2757143 (1956-07-01), Katzman
patent: 2859182 (1958-11-01), Carroll
patent: 2965576 (1960-12-01), Wilson
patent: 4435317 (1984-03-01), Gerritsen

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