Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1995-11-03
1999-10-12
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510219, 510221, 510226, 510228, 510197, 510403, 510427, 510433, 510503, C11D 104, C11D 175, C11D 3386, C11D 710
Patent
active
059655038
DESCRIPTION:
BRIEF SUMMARY
FIELD OF INVENTION
This invention relates to a detergent composition for cleaning hard surfaces with superior cleaning qualities.
BACKGROUND OF THE INVENTION
In food industry hard surface cleaning has traditionally been carried out by high pressure foam cleaning. There are some severe safety problems by using high pressure foam cleaning: High pH, aggressive cleaning agents, aerosol formation and mechanical noise and damage are the most important ones, but there are also environmental problems connected to high pressure foam cleaning due to a large water consumption and thereby effluent treatment.
It has also been excluded to add enzymes to the detergents in the normal hard surface cleaning. The risk of inhaling enzymes (allergy potential) due to aerosol formation is so obvious that it rules out the use of enzymes in the traditional high pressure foam cleaning.
To overcome these difficulties in recent years much effort has been put into developing different hard surface cleaners in the form of gels. The gel cleaners have the advantages of giving a safe application, they do not or only insignificantly create aerosols, they have a low water consumption, so if the cleaning capacity of the gel is satisfactory, the gel application method is a safe and gentle way of cleaning hard surfaces.
SUMMARY OF THE INVENTION
In this invention it is surprisingly found that a special gel cleaning composition with enzyme(s), which contains no thickeners, has extraordinary good cleaning capacities on hard surfaces.
Accordingly, the present invention relates to a detergent composition for cleaning hard surfaces, the composition comprising one surfactant together with an electrolyte or more than one surfactant, optionally together with an electrolyte, which composition is capable of forming a gel when water is added, the composition further comprising one or more enzymes.
BRIEF DESCRIPTION OF DRAWINGS
The present invention is further illustrated by reference to the accompanying drawings, in which
FIG. 1 shows the cleaning result of the C.sub.14 dimethyl amine oxide/sodium oleate/protease gel, pH 12 (top), pH 10.1 (bottom), half the lid with enzyme, the other half without enzyme, the gel produced as described in Example 1.
FIG. 2 shows the cleaning result of the C.sub.12-14 alkyl dimethyl betaine/sodium oleate/protease gel, pH 12, half the lid with enzyme, the other half without enzyme, the gel produced as described in Example 1.
FIG. 3 shows the cleaning result of the 6-0-dodecanoyl glycoside/sodium dodecyl ether sulfate/protease gel, pH 4 (bottom), pH 8 (top), half the lid with enzyme, the other half without enzyme, the gel produced as described in Example 1.
FIG. 4 shows the cleaning result of the 6-0-dodecanoyl glycoside/sodium dodecyl sulfate/amylase gel, pH 7, half the lid with enzyme, the other half without enzyme, the gel produced as described in Example 2.
DETAILED DISCLOSURE OF THE INVENTION
Gel cleaning agents containing one or more enzymes for use as industrial hard surface cleaners have been described before (see Research Disclosure, August 1992, p.619, No.34045). These gels are characterized by containing at least one or more surfactants, builders, thickeners and one or more enzymes.
According to the invention, it is preferred to add enzyme(s) to a special gel cleaning composition which contains no thickeners. (Gels containing thickeners are described in Research Disclosure, August 1992, p.619, No.34045). Basically these gels are made of one surfactant together with an electrolyte or more than one surfactant, optionally together with an electrolyte, which composition is capable of forming a gel when water is added. Some surfactants have this special capacity; in the present invention it has been found that there may be two surfactants, the first surfactant may be an amine oxide or a betaine or a tetraalkylammoniumchloride and the second surfactant an alkali metal salt of a fatty acid, or the first surfactant may be a nonionic glycolipid and the second surfactant a charged surfactant, preferably an anioni
REFERENCES:
patent: 4238345 (1980-12-01), Guilbert
patent: 4793943 (1988-12-01), Haslop et al.
patent: 5156761 (1992-10-01), Aaslyng et al.
patent: 5223179 (1993-06-01), Connor et al.
patent: 5248434 (1993-09-01), Nicholson
patent: 5320783 (1994-06-01), Marin et al.
Dialog No. 34045, Research Disclosure, Aug. 1992.
Abstract JP 59227995.
Andresen Otto
Christensen Poul N.o slashed.rgaard
Kalum Bo
Boyer Charles
Gregg Valeta
Lieberman Paul
Novo Nordisk A S
Zelson Steve T.
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