Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1995-12-11
1998-05-26
Lieberman, Paul
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510235, 510421, 510422, 510425, C11D 332, C11D 348
Patent
active
057564426
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
1. Field of the Invention
This invention relates to pourable, liquid, aqueous cleaning concentrates which may be used in undiluted form as scouring compositions and in diluted form as all-purpose cleaners. Concentrates of the type in question are known and are based on the co-use of water-soluble abrasive components which perform a scouring function in concentrated media, but which virtually dissolve in dilute media and, after application, can readily be removed from the substrate simply by rinsing with water.
2. Statement of Related Art
U.S. Pat. No. 4,179,414 describes stable pastes which consist of around 50 to 65% by weight of sodium bicarbonate, around 50 to 35% by weight of water and around 5 to 20% by weight of sodium chloride and also of around 10 to 30% by weight of C.sub.12-16 fatty acid diethanolamide, both based on the percentage water content, and which have a scouring effect in concentrated form and which clean hard surfaces in dilute form. No figures are provided as to the particle size of the sodium bicarbonate. EP 0 193 375 A2 describes liquid compositions which may contain 1.5 to 30% by weight of surfactants and 6 to 45% by weight of sodium bicarbonate with an average diameter of 10 to 500 .mu.m. The rest consists of water. EP 0 334 566 A2 describes aqueous compositions containing 1.5 to 40% by weight of surfactants, 2.0 to 65% by weight of predominantly undissolved potassium sulfate with the same particle size as mentioned above, preferably 20 to 300 .mu.m, and optionally 0.5 to 10% by weight of sodium chloride. International patent application WO 91/08282 describes liquid scouring cleaners containing water-soluble abrasives in which around 1.5 to 30% by weight of surfactants, around 45 to around 75% by weight of sodium bicarbonate with a small average particle size of--specifically--less than 80 .mu.m and more than 10% by weight of water may be present. Finally, DE 42 27 863.5 describes liquid cleaning concentrates containing water-soluble abrasives of which around 2 to 30% by weight consists of a low-foaming surfactant mixture and around 50 to 65% by weight of sodium bicarbonate with an average particle size of around 200 .mu.m.
Almost all known pourable, liquid, aqueous cleaners containing water-soluble abrasive components contain a carrier phase consisting of a combination of anionic surfactants of the sulfonate and/or sulfate type and nonionic surfactants.
DESCRIPTION OF THE INVENTION
The problem addressed by the present invention was to provide a modern, abrasive-containing liquid cleaning composition which would meet the following requirements:
A low-foaming carrier phase made up of surfactants particularly mild to the skin has surprisingly been found, enabling both coarse sodium bicarbonate with an average particle size of around 200.+-.100 .mu.m, which is distinguished by a particularly good abrasive cleaning effect, and also relatively fine sodium bicarbonate with an average particle size distribution of around 65.+-.40 .mu.m, which is distinguished by a particularly creamy soft consistency, to be dispersed in stable form. This carrier phase consists essentially of narrow-range alkyl polyglycol ethers, amphoteric surfactants and soaps.
Accordingly, the present invention relates to pourable, liquid, aqueous cleaning concentrates containing surfactants and a water-soluble abrasive which may be used in concentrated form as scouring compositions and in dilute form as all-purpose cleaners, characterized in that they contain around 20 to 60% by weight of sodium bicarbonate with an average particle size of around 20 to 500 .mu.m and preferably of around 50 to 300 .mu.m and low-foaming surfactant mixture of narrow-range alkyl polyglycol ethers, amphoteric surfactants and soap, the ratio by weight of amphoteric surfactants to narrow-range alkyl polyglycol ethers being 1:10 to 3:1, the ratio by weight of amphoteric surfactants to soap being 15:1 to 1:3 and the ratio by weight of narrow-range alkyl polyglycol ethers to soap being 25:1 to 1:1.
Anionic surfac
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Bocarac Katica
Hofmann Rainer
Jeschke Rainer
Kiewert Eva
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Lieberman Paul
Millson Jr. Henry E.
Ogden Necholus
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