New quaternary ammonium salts of malic acid and their applicatio

Details New quaternary ammonium salts of malic acid and their applicatio New quaternary ammonium salts of malic acid and their applicatio

1974-12-23

1976-05-04

Evans, Joseph E.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

424316, 424329, 252117, C07C 8730, C07C 8762, C07C 8768

Patent

active

039548465

ABSTRACT:
Quaternary ammonium salts of malic acid having the formula: ##EQU1## where: R is a monovalent aliphatic hydrocarbon radical, saturated or unsaturated, of from 8 to 20 carbon atoms but preferably of 12 to 18 carbon atoms; R.sub.1, R.sub.2, R.sub.3 may be identical or different and each represents a lower alkyl radical or an aryl radical. The salts find use in cosmetics as a source of the malic ions necessary to the energy process in cellular metabolism. These salts insure a better intracellular penetration of malic ion and improve the stability of creams and other cosmetic emulsions.

REFERENCES:
patent: 3578667 (1971-05-01), Wakeman et al.
patent: 3879350 (1975-04-01), Suzuki et al.

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