Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1997-03-07
1999-09-14
Howard, Jacqueline V.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510470, 510446, B01F 1700, C11D 183
Patent
active
059522798
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to detergent mixtures with improved dermal compatibility containing monoglyceride (ether) sulfates and selected sugar surfactants, 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 the 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. Overviews on the production and properties of monoglyceride sulfates have been published, for example, by A. K. Biswas et al. in J. Am. Oil. Chem. Soc. 37, 171 (1960), R. Chamanial et al. in J. Oil Technol. Ass. Ind. 41 (1972) and J. K. Jain in Indian J. Pharm. Sci. 41, 181 (1979).
Unfortunately, the foaming behavior, especially in hard water, and dermal compatibility of monoglyceride sulfates and the corresponding ether sulfates are not entirely satisfactory for a number of applications.
Accordingly, the problem addressed by the present invention was to find a way of significantly improving the performance and dermal 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 sugar surfactants mentioned lead to synergistically improved dermal compatibility and 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 desired, the neutralized substances may be subjected to ultrafiltration to reduce the 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 are 0 or a number 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, cocofatty acid monoglyceride, palmitic acid monoglyceride, stearic acid monoglyceride, oleic acid monoglyceride and tallow fatty acid monoglyceride and ethylene oxide adducts thereof with sulfur trioxide or chlorosulfonic acid in the form of the 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.
Sucrose esters, which are often also referred to as sugar esters, are well-known nonionic surfactants. These compounds are normally produced by transesterification of fatty acid methyl esters with sucrose in the presence of basic catalysts, for example pyridine or piperidine, in cf. L. Guillardeau in Tens. Surf. Det. 29, 342 (1992))!. Mono-, di-, tri- and polyesters of the sucrose are formed according to the raw materials used and the reaction conditions selected, although in general it is only the monoesters and diesters which are of practical significance. An overview of this subject was published, for example, by N. Desai in Parf. Kosm. 64, 463 (1991). Information on the structure and properties of the substances can also be found in Surfactants in Consumer Produ
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Behler Ansgar
Fabry Bernd
Granmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
Howard Jacqueline V.
Jaeschke Wayne C.
Szoke Ernest G.
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