Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1997-03-10
2000-01-11
Johnson, Jerry D.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
510127, 510130, 510135, 510155, 510490, 510494, 510495, C11D 116, C11D 137, A61K 750
Patent
active
060136162
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to detergent mixtures with improved dermal compatibility which contain monoglyceride(ether)sulfates and selected fatty acid condensation products, to surface-active formulations containing these mixtures and to the use of the mixtures for the production of surface-active formulations.
2. Discussion of Related Art
Formally, monoglyceride sulfates are products of the addition of sulfur trioxide to the primary hydroxyl group of a glycerol monofatty acid ester. Technically, however, they are complex anionic surfactant mixtures which are normally obtained by simultaneous transesterification and sulfation of mixtures of triglycerides and glycerol and subsequent neutralization.
Monoglyceride sulfates are distinguished by satisfactory performance properties and good dermatological compatibility. Reviews of the production and properties of monoglyceride sulfates have been published, for example, by A. K. Biswas et al. in J. Am. Oil. Chem. Soc. 3,7 171 (1960), by R. Chamanial et al. in J. Oil. Technol. Ass. Ind. 41 (1972) and by J. K. Jain in Indian J. Pharm. Si. 41, 181 (1979).
For many applications, the foaming power, particularly in hard water, and the dermal compatibility of monoglyceride sulfates and the corresponding ether sulfates are not entirely satisfactory.
Accordingly, the problem addressed by the present invention was to find a way of significantly improving the performance and skin compatibility of monoglyceride(ether)sulfates.
DESCRIPTION OF THE INVENTION
The present invention relates to mild detergent mixtures containing
It has surprisingly been found that mixtures of monoglyceride sulfates or monoglyceride ether sulfates and the fatty acid condensation products mentioned lead to a synergistic improvement in dermal compatibility and to increased foaming power.
Monoglyceride sulfates and monoglyceride ether sulfates are known anionic surfactants which may be obtained by the relevant methods of preparative organic chemistry. They are normally produced from triglycerides which are transesterified to the monoglycerides, optionally after ethoxylation, and subsequently sulfated and neutralized. The partial glycerides may also be reacted with suitable sulfating agents, preferably gaseous sulfur trioxide or chlorosulfonic acid [cf. WO 92/09569, WO 92/09570, Henkel]. If desired, the neutralized substances may be subjected to ultrafiltration to reduce their electrolyte content to the required level.
The monoglyceride(ether) sulfates to be used in accordance with the invention correspond to formula (I): ##STR1## in which R.sup.1 CO is a linear or branched acyl group containing 6 to 22 carbon atoms, x, y and z together represent 0 or numbers of 1 to 30 and X is an alkali metal or alkaline earth metal.
Typical examples of monoglyceride(ether)sulfates suitable for use in accordance with the invention are the reaction products of lauric acid monoglyceride, coconut fatty acid monoglyceride, palmitic acid monoglyceride, stearic acid monoglyceride, oleic acid monoglyceride and tallow fatty acid monoglyceride and their ethylene oxide adducts with sulfur trioxide or chlorosulfonic acid in the form of their sodium salts. Monoglyceride sulfates corresponding to formula (I), in which R.sup.1 CO is a linear acyl group containing 8 to 18 carbon atoms, are preferably used.
Fatty acid isethionates are known anionic surfactants which may be obtained by the relevant methods of preparative organic chemistry. They are normally produced from fatty acids which are esterified with isethionic acid in the presence of alkaline catalysts [cf. U.S. Pat. No. 4,536,338 (Unilever)]. A review of fatty acid isethionates was published by R. Login in HAPPI, September, 56 (1984).
The fatty acid isethionates correspond to formula (II): unsaturated acyl group containing 6 to 22 carbon atoms and X is an alkali metal and/or alkaline earth metal, ammonium, alkylammonium, alkanolammonium or glucammonium.
Typical examples are fatty acid isethionates derived from caproic aci
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Behler Ansgar
Fabry Bernd
Grandmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Johnson Jerry D.
Szoke Ernest G.
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