Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Patent
1994-11-29
1997-01-07
Caldarola, Glenn A.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
134 2214, 134 42, 510238, 510194, 510189, 510185, C11D 112, C11D 1755, B08B 900, B08B 314
Patent
active
055913768
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
This invention relates to low-foaming cleaning compositions for hard surfaces. In the context of the invention, hard surfaces are understood to be any non-textile surfaces encountered in the domestic and institutional sector, except for crockery. The expression "multipurpose cleaners" (hereinafter referred to as MPC's) has been adopted for cleaning compositions of this type. Low-foaming MPC's are those which, after manual application, produce a minimal foam volume which is significantly further reduced within a few minutes.
MPC's have been known for some time. They are essentially aqueous surfactant solutions of various kinds with or without additions of builders and with and without additions of water-soluble salts or solubilizers. The high cleaning power of MPC's has been increasingly found to be a disadvantage in practice in cases where they are manually applied. Although the consumer wants to see some foaming of the in-use solution at the beginning of cleaning as proof of its effectiveness, the foam should then disappear as quickly as possible so that surfaces which have been cleaned do not have to be rewiped.
To meet this increasing need for lower foaming power, some manufacturers of MPC's have opted to reduce the surfactant content of their market products to a significant extent, although this does of course lead to a considerable loss of cleaning power. The user of such products has to compensate for this loss of cleaning power by intensified mechanical wiping.
DISCUSSION OF RELATED ART
By virtue of their ecologically favorable properties, the use of alkyl polyglucosides (hereinafter referred to as APG's) in detergents and cleaning composition is enjoying increasing popularity. However, alkyl polyglucosides are known to be high-foaming surfactants, being recommended in particular for products where high foaming power is required, i.e. for example for manual dishwashing detergents and for hair shampoos. EP 70 074, 70 075, 70 076 and 70 077 (Procter & Gamble) describe high-foaming detergents based on various APG-containing surfactant combinations. Accordingly, these combinations are not recommended for multipurpose cleaners.
Special short-chain C.sub.8-10 alkyl glucosides (for example Trition.RTM. CG-110, a product of Rhom and Haas) have also long been known as high-foaming nonionic surfactants which generate stable foams. Low-foaming detergents-containing alkyl polyglucosides for use in machine washing, particularly machine dishwashing, are described in WO 88/09369 (Staley). The low-foaming character of these detergents is attributable to the presence of conventional low-foaming fatty alcohol alkoxylates which have an HLB value of around 10 or less and which may contain propylene oxide units.
The problem addressed by the present invention was to provide compositions for use in the manual cleaning of hard surfaces, excluding crockery, which would combine high cleaning power and high biological degradability with very low foaming power. The criterion for this would be a visible reduction in foam initially formed within 5 minutes.
DESCRIPTION OF THE INVENTION
It has now surprisingly been found that multipurpose cleaners combining high cleaning power with extremely weak foaming behavior can be obtained by means of combinations of certain short-chain alkyl polyglucosides known for their high foaming power with certain nonionic surfactants and fatty acids.
Accordingly, the problem addressed by the invention is solved by compositions essentially containing the following ingredients (all percentages are by weight, based on active substance): corresponding to the formula R O Z.sub.x where R=C.sub.8-10, O=oxygen and x=1 to 6, Z being a sugar unit, for example a glucose or xylose unit, C.sub.8-10 fatty alcohol alkoxylate with an HLB value above 10 and preferably.gtoreq.11, C.sub.10-18 fatty acids and
In one preferred embodiment of the invention, MPC's of the type mentioned above additionally contain typical anionic surfactants, such as fatty alcohol sulfates, fatty alcohol ether s
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Carrer Giuseppe
Jeschke Peter
Kiewert Eva
Middelhauve Birgit
Caldarola Glenn A.
Grandmaison Real J.
Hailey Patricia L.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
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