Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Patent
1996-10-10
1998-07-14
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
510421, 510434, 510470, 510477, 510506, C11D 1722, C11D 1825, C11D 322
Patent
active
057804168
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to cleaning formulations for hard surfaces. Hard surfaces in the context of the invention are any non-textile surfaces encountered in the domestic and institutional sectors with the exception of crockery.
The name "multipurpose cleaners" has been coined for cleaning formulations of this type. Multipurpose cleaners have been known for some considerable time. They are essentially aqueous surfactant solutions of various kinds with or without added builders and with or without added water-soluble solvents or solubilizers. Consumers expect multipurpose cleaners to be effective against all kinds of soils encountered in the home. Conventional mildly alkaline or neutral multipurpose cleaners largely satisfy these requirements in regard to oily, fatty and dust-like soils. In addition, however, consumers expect the lime-containing soils encountered above all in bathrooms and also in kitchens to be readily removable. To meet this requirement, the production of acidic multipurpose cleaners is an option. However, it has been found in practice that acidic multipurpose cleaners cannot be produced simply by acidifying conventional multipurpose cleaners because, in this case, problems are often encountered in regard to making up, low-temperature stability and/or stability in storage, particularly with regard to any perfume oils present. In addition, a considerable quantity of hydrotropes is often necessary to dissolve all the components. However, it would be desirable not to have to use hydrotropes because they generally do not make any contribution towards the performance of the cleaner.
2. Discussion of Related Art
Thus, International patent application WO 86/2943 discloses acidic cleaning formulations which contain anionic surfactants and - to adjust viscosity-monoglycosides.
The problem addressed by the present invention was to provide high-performance acidic cleaning formulations for hard surfaces, so-called multipurpose cleaners, which would be easy to formulate and stable at low temperatures and in storage and which would show the requirement profile mentioned above, even without the use of hydrotropes. According to the invention, this problem has been solved by combining a C.sub.6-11 alkyl glycoside with a specific fatty alcohol ether.
DESCRIPTION OF THE INVENTION
The present invention relates to water-containing cleaning formulations with a pH value of 3.0 to 6.5 and preferably 3.5 to 5.5 containing R.sup.1 is a branched or linear, saturated or unsaturated alkyl group containing 6 to 11 and preferably 8 to 10 carbon atoms, G is a glycose unit, preferably a glucose or xylose unit, and x is a number of 1 to 10 and preferably 1.1 to 3.0, fatty alcohol ether corresponding to formula II: ##STR2## in which R.sup.2 is an alkyl radical containing 6 to 12 carbon atoms, m is a number of 0.5 to 3.0 and n is a number of 4.0 to 12.0.
More particularly, m in formula (II) is a number of 1.0 to 2.0 and n is a number of 6.0 to 11.0.
Alkyl glycosides are known substances which may be obtained by the relevant methods of preparative organic chemistry. EP-A1-0 301 298 and WO 90/3977 are cited as representative of the extensive literature available on the subject. The alkyl glycosides may be derived from aldoses or ketoses containing 5 or 6 carbon atoms, preferably from glucose and xylose. Accordingly, the preferred alkyl glycosides are alkyl glucosides and xylosides.
The index x in general formula (I) indicates the degree of oligomerization (DP degree), i.e. the distribution of monoglycosides and oligoglycosides, and is a number of 1 to 10. Whereas x in a given compound must always be an integer and, above all, may assume a value of 1 to 6, the value x for a certain alkyl glycoside is an analytically determined calculated quantity which is generally a broken number. Alkyl glycosides with an average degree of oligomerization x of 1.1 to 3.0 are preferably used. Alkyl glycosides with a degree of oligomerization below 2.0 and, more particularly, from 1.2 to
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Kiewert Eva
Menke Ronald
Middelhauve Birgit
Grandmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
Hertzog Ardith
Jaeschke Wayne C.
Szoke Ernest G.
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