Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Patent
1993-07-28
2000-09-19
Bell, Mark L.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
510221, 510226, 510320, 510321, 510337, 510340, 510342, 510351, 510421, 510422, 510428, 510470, 510481, 510498, C11D 1700, C11D 1708, C11D 300, C11D 742
Patent
active
06121227&
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
This invention relates to a storable, highviscosity liquid detergent.
STATEMENT OF RELATED ART
In recent years, liquid detergents have been enjoying increasing popularity among consumers because they have certain advantages over powder-form detergents in terms of handling and are capable of more effectively removing greasy and oily soil. This particular advantage is attributable to the fact that liquid detergents can contain relatively large quantities of nonionic surfactants which are particularly effective against greasy or oily soil. The consumer expects such detergents to be available in highly concentrated form, so that they may be dispensed in relatively small quantities by comparison with powder-form detergents, and to have a certain consistency. This consistency is equated with a high active-substance content. This applies not only to laundry detergents, but also to shampoos, manual wash detergents, dishwashing detergents and cosmetic preparations. Accordingly, the term "liquid detergent" is used hereinafter for the products mentioned, but especially for detergents for delicate fabrics and for shampoos.
To ensure stability in storage, even over prolonged periods, liquid detergents generally contain preservatives which occasionally have unwanted side effects. In addition to good washing power, the liquid detergents mentioned are also expected to show pronounced foaming, although on the other hand it is important that the foam can also be easily rinsed out by the consumer.
Accordingly, there has been no shortage of attempts to provide liquid detergents which correspond to consumer demands in regard to their washing effect, their foaming behavior, their stability in storage and their handling by using new surfactant combinations, foam regulators and preservatives. Accordingly, the problem addressed by the present invention was also to provide a liquid detergent combining good washing power with high stability in storage, the composition of the detergent being such that the above-described disadvantages of known products would be avoided.
EP-A-70 074 describes surfactant combinations containing alkyl polysaccharides and anionic surfactants of the sulfate, sulfonate and/or carboxylate type in certain mixing ratios. In aqueous solution, these surfactant combinations form a stable foam which can be completely removed by rinsing.
It is known that the viscosity of liquid detergents can often be increased by addition of electrolyte. However, the electrolyte itself does not contribute towards the washing result and pollutes the wastewater. In addition, the surfactant system is generally very sensitive to even minor variations in the electrolyte content, so that the quantity of electrolyte to be added always has to be redetermined whenever the raw materials --which in turn generally contain varying amounts of electrolyte--are changed. Accordingly, there has been no shortage of attempts to adjust the viscosity of liquid detergents by a suitable combination of washingactive detergent ingredients. If lower alcohols are added to such liquid detergents to improve their stability in storage, products of very low viscosity are generally obtained. For example, DE-A-39 20 480 describes a liquid detergent containing fatty alcohol sulfate in combination with alkyl polyglycoside and a high percentage of a soap mixture consisting of salts of unsaturated fatty acids and salts of saturated fatty acids in a certain ratio by weight to one another. An addition of lower alcohols to improve the stability of the described detergents in storage leads to products of low viscosity.
Accordingly, the problem addressed by the present invention was to provide storable, high-viscosity liquid detergents combining high washing power with pronounced foaming, the foam generated having to be readily removable by washing.
DESCRIPTION OF THE INVENTION
Accordingly, the present invention relates to a liquid detergent containing anionic surfactant, alkyl polyglycoside and soap, characterized in that it contains su
REFERENCES:
patent: 4285841 (1981-08-01), Barrat et al.
patent: 4507219 (1985-03-01), Hughes
patent: 5244593 (1993-09-01), Roselle et al.
patent: 5258142 (1993-11-01), Giesen et al.
Hoffmeister Juergen
Meine Georg
Puchta Rolf
Bell Mark L.
Drach John E.
Hailey Patricia L.
Henkel Kommanditgesellschaft auf Aktien
J. Murphy Glenn E.
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