Compositions – Electrolytes for electrical devices
Patent
1992-08-26
1994-07-12
Lovering, Richard D.
Compositions
Electrolytes for electrical devices
252173, 25217413, 25217416, 252545, 252547, 252550, 252551, 252555, 252DIG13, 264 43, 424450, 4284022, 514881, A61K 9127, C11D 137, C11D 1708
Patent
active
053286286
ABSTRACT:
This invention relates to a method of stabilizing liposomes contained in aqueous compositions against lysis by anionic surfactants otherwise known to disrupt and lyse such liposomes by using certain surfactants as stabilizing agents and to the stabilized compositions obtained thereby as well as to a method of making detergent compositions containing such stabilized liposomes and anionic surfactants as well as to the compositions themselves. The compositions can be used as shower gels and shampoos. The liposomes are preferably vesicles derived from natural phospholipids or from synthetic nonionic amphiphilic compounds which are sometimes referred to as "niosomes" and may contain water soluble humectants or vitamins. From about 0.1% to 40%, and more preferably, from 2% to 10%, by weight of at least one surfactant such as fatty alkyl sulfosuccinates (fatty alkyl group contains from 8 to 22 carbons atoms), fatty acylamino polyglycol ether sulfates (fatty acyl group contains from 8 to 22 carbon atoms), fatty alkyl amine oxides (fatty alkyl group contains from 7 to 26 carbon atoms), fatty alkyl phosphate esters (fatty alkyl group contains from 8 to 22 carbon atoms), and N-acyl amino acid salts or salts of N-acyl derivatives of hydrolyzed proteins of up to about 2,500 daltons in weight average molecular weight (acyl portion is derived from a carboxylic acid having from 8 to 22 carbon atoms) is added to an aqueous composition containing from about 0.1% to 50%, and more preferably from 5% to 30%, by volume of liposomes to produce a stabilized liposome suspension. Such stabilized liposome suspensions can then be included in a detergent formulation containing from about 0.1 to 35%, and more preferably from 5% to 15%, by weight of at least one anionic surfactant which is known to lyse liposomes such as sodium lauryl sulfate or sodium laureth-2 sulfate.
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Ahmed Anjum F.
Charaf Ursula K.
Hart Gerald L.
Lovering Richard D.
S. C. Johnson & Son Inc.
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