Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Patent
1996-03-04
1998-05-19
Lusignan, Michael
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
134 40, 510434, 510470, 510535, C11D 112
Patent
active
057536066
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to low-foaming detergents or cleaning formulations, preferably liquid detergents and cleaning formulations for hard surfaces. Cleaning formulations for hard surfaces are understood to be any non-textile surfaces occurring in the domestic and institutional sector with the exception of crockery. The name "multipurpose cleaners" has been coined for cleaning formulations of this type. Low-foaming multipurpose cleaners are those which, when manually applied, develop a low volume of foam which undergoes a significant further reduction within a few minutes.
2. Statement of Related Art
Multipurpose cleaners have long been known. They are essentially aqueous surfactant solutions of various kinds with or without additions of builders and with or without additions of water-soluble solvents or solubilizers. In practice, the high foaming power of multi-purpose cleaners has been increasingly found to be a disadvantage where they are manually applied. Although the user wants to see some foaming by the cleaning solution as proof of its effectiveness at the beginning of the particular cleaning task, the foam should then disappear again as quickly possible so that surfaces once cleaned do not have to be rewiped.
In many cases, liquid detergents also tend to generate large volumes of foam which restricts their usefulness in washing machines.
In order to meet this increasing demand for lower foaming power, some manufacturers of multipurpose cleaners have started significantly reducing the surfactant content of their products which does of course lead in turn to a significant loss of cleaning power. The user of such products has to compensate for the loss of cleaning power by greater mechanical effort in wiping.
By virtue of their favorable ecological properties, alkyl polyglycosides (APG's) are enjoying increasing popularity in detergents and cleaning formulations. However, alkyl polyglycosides are known to be high-foaming surfactants. Accordingly, they are recommended for products which are required to develop high foaming power, i.e. for example for manual dishwashing detergents or for hair shampoos. EP 0 070 074 B1 and 0 070 076 B2 describe corresponding high-foaming detergents and cleaning formulations based on various APG-containing surfactant combinations. Accordingly, these combinations are also not recommended for multipurpose cleaners.
Special short-chain C.sub.8-10 alkyl glucosides (for example Triton.RTM.CG-110, a product of Rohm & Haas) have also been known for some time as high-foaming nonionic surfactants which develop a stable foam. Low-foaming cleaning formulations containing alkyl polyglucosides for use in cleaning machines, especially dishwashing machines, are described in WO 88/09369. These formulations acquire their low-foaming character through the presence of conventional low-foaming fatty alcohol alkoxylates which have an HLB value of around 10 or lower and which may contain propylene oxide units.
Detergent mixtures based on fatty acid alkyl ester alkoxylates are described in DE-OS 42 27 046.
DESCRIPTION OF THE INVENTION
The problem addressed by the present invention was to provide detergents or cleaning formulations which would combine high cleaning power and ready biodegradability with very low foaming power. Where the formulations are used for the manual cleaning of hard surfaces, very low foaming power means that any foam initially formed should visibly diminish within 2 minutes.
It has now surprisingly been found that liquid detergents and multipurpose cleaners which combine high cleaning power with extremely low foaming behavior can be obtained by using combinations of certain C.sub.8-16 alkyl polyglycosides which are known to be high-foaming with certain fatty acid alkyl ester alkoxylates.
The present invention relates to water-containing detergents or cleaning formulations containing 0.1 to 50% by weight and preferably 1 to 20% by weight of at least one alkyl polyglycoside corresponding to formula (I): R.sup.1 --O--
REFERENCES:
patent: 5292910 (1994-03-01), Raths et al.
patent: 5374716 (1994-12-01), Biermann et al.
patent: 5464874 (1995-11-01), Balzer
patent: 5523016 (1996-06-01), Giesen et al.
"Seifen-Ole-Fette-Wachse", 112, 371, (1986).
Behler Ansgar
Haferkamp Astrid
Hees Udo
Kiewert Eva
Link Kerstin
Drach John E.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Lusignan Michael
Millson Jr. Henry E.
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