Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1992-09-28
1994-02-15
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
252173, 252546, 252DIG5, 252DIG13, 252DIG14, C11D 322, C11D 304, C11D 332
Patent
active
052864065
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to water-based detergent preparations which are particularly suitable for use as liquid or paste-form personal hygiene preparations and which show increased viscosity, good thickenability by addition of water soluble electrolyte sales and improved foaming power and which contain a combination of protein hydrolyzate/fatty acid condensation products (PFC) and alkyl glycosides.
STATEMENT OF RELATED ART AND OBJECT OF THE INVENTION
Protein/fatty acid condensates are a well-known class of surfactants which, by virtue of their compatibility with the skin, are recommended for cosmetic cleaning preparations. However, they show poor foaming power and, in the form of aqueous solutions, cannot be effectively thickened by addition of electrolytes. Accordingly, they have to be combined with high-foaming, readily thickenable anionic surfactants so that their high compatibility with the skin is impaired. Accordingly, there was a need to find a suitable surfactant partner for surfactants of the protein/fatty acid condensate type which would enable the foaming properties to be improved and their viscosity to be readily increased without any reduction in compatibility. These properties are particularly important for cosmetic personal hygiene preparations such as, for example, liquid soaps, shower baths, bath preparations, cosmetic washing pastes, hair rinses and hair shampoos, because these products are distibuted by hand over the head or body and, accordingly, require a certain viscosity to prevent them from running through the fingers like water. However, such properties are also desirable in liquid light-duty detergents and dishwashing detergents.
DESCRIPTION OF THE INVENTION
It has now been found that, by combining protein/fatty acid condensates with alkyl glycosides, it is possible to produce particularly interesting water-based detergent preparations which not only combine the advantages of both classes of surfactant, they also shown new unexpected properties.
SUMMARY OF THE INVENTION
Accordingly, the present invention relates to water-based detergent preparations containing 12 to 22 carbon atoms and, water-soluble oligo- and/or poly-peptides, preferably protein hydrolyzates or a water-soluble salt thereof and R.sup.1 -(G).sub.x, in which R.sup.1 is an alkyl group containing 8 to 22 carbon atoms and (G).sub.x is a glucoside or oligoglycoside unit having a degree of oligomerization x of 1 to 10. The detergent preparations according to the invention have a higher viscosity--or, for lower surfactant concentrations, better thickenability by addition of electrolytes--than preparations containing only one of the two components. In addition, the foaming power of the preparations according to the invention is synergistically increased. Condensation products of fatty acids and oligopeptides or polypeptides are, above all, the known condensation products of fatty acids and protein hydrolyzates. To this end, proteins, for example soya protein, collagen or keratin are first subjected to hydrolysis to form water soluble oligopeptides and/or polypeptides. The oligopeptides and/or polypeptides are then acylated with fatty acid chlorides. However, it is also possible, for example in accordance with FR-PS 936 632, to heat the alkali metal salt of the peptide with the fatty acid soap to temperatures of 130.degree. C. to 220.degree. C. The salts of the protein hydrolyzate/fatty acid condensates obtainable in this way are commercially available in the form of aqueous solutions under the names of Lamepon.RTM. or Maypon.RTM..
Alkyl glycosides corresponding to the formula R.sup.1 -(G).sub.x are well-known surface-active agents which may be produced from sugars and aliphatic, primary alcohols containing 8 to 22 carbon atoms by acetalization. Preferred sugar components (glycoses) are glucose and also fructose, mannose, galactose, talose, gulose, allose, altrose, idose, arabinose, xylose, lyxose, ribose and mixtures thereof. By virtue of their ready availability and their favorable perform
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Schelges Heike
Schneider Werner
Scholz Wolfhard
Schosser Gryta
Waldmann-Laue Marianne
Henkel Kommanditgesellschaft auf Aktien
Hertzog A.
Jaeschke Wayne C.
Lieberman Paul
Szoke Ernest G.
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