Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1997-02-24
1999-06-08
McGinty, Douglas J.
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
510101, 510119, 510123, 510124, 510125, 510127, 510128, 510191, 510229, 510237, 510238, 510239, 510245, 510253, 510362, 510363, 510364, 510365, 510373, 510398, 510413, 510414, 510426, 510433, 510477, 510488, 510499, C11D 112, C11D 175, C11D 330
Patent
active
059104775
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to liquid compositions for cleaning hard surfaces.
BACKGROUND
It is well known in the art that it is a desirable feature of a liquid hard surface cleaner that it should have a certain viscosity. Indeed, viscosity allows a controlled handling, more specifically dispensing, of the product during use, as compared to a thinner product. Also, viscosity allows a better action of the product on non-horizontal surfaces, such as toilets, bath tubs and the like. That is because viscosity prevents the product from running down said surfaces, like thinner liquids would. Preferably, viscosity will be built up by a so-called self-thickening system as opposed to using a thickener compound for that specific purpose. Indeed, thickeners, such as gums or polymers have at least one drawback that they affect the formula cost, while providing only one benefit, which is thickening. They do not participate to the actual cleaning of the surface and therefore represent "inert" materials. Also, some thickeners are detrimental to the physical stability of the products they are formulated in. It is known in the art to formulate self thickened compositions where the thickening is achieved without the use of polymeric thickeners, see for instance EP 518 401 and EP 21 581.
But there are some drawbacks associated with viscosity. And a main drawback is that viscous products are typically difficult to rinse away, specifically because viscous products have a good cling onto surfaces and current self thickening systems lead to the formation of stable foams. Thus viscosity and ease of rinsing are somewhat conflicting requirements, but both are desirable in a single product for cleaning hard surfaces. It is thus an object of the present invention to provide a hard surface cleaning composition which is viscous by means of a self thickening system, and which is nevertheless easy to rinse away.
In response we have found that such a composition could be formulated by using an amine oxide, an amine or mixtures thereof, in combination with a secondary or primary monobranched alkyl sulfate or sulfonate in a mildly acidic system further comprising a hydrotrope and citric acid. An additional benefit derived from said compositions is that they are low foaming, both in the sense of the amount of foam initially generated during use, as well as in terms of foam stability. This benefit adds to the ease of rinsing benefit already obtained with the "mechanistic" benefit derived from the viscosity profile of the composition.
SUMMARY OF THE INVENTION
The present invention is an aqueous viscous composition comprising an amine oxide, or an amine or mixtures thereof, a secondary, or primary monobranched alkyl sulfate or sulfonate in excess of said amine oxide, amine or mixtures thereof, a hydrotrope, and an organic acid, said composition being formulated at a pH of from 0.5 to 7.
DETAILED DESCRIPTION OF THE INVENTION
The compositions according to the present invention are aqueous compositions. Therefore they comprise from 90% to 60% by weight of the total composition of water. One of the achievements of the present invention is that the viscosity build up described hereinafter can be achieved with such a high amount of water, i.e. a small amount of actives.
As a second essential ingredient, the compositions herein comprise an amine oxide, or amine, or mixtures thereof. Suitable amine oxides to be used according to the present invention are according to the formula R1R2R3NO, where R1 is a hydrocarbon chain comprising from 6 to 18 carbon atoms, and R2 and R3 are independently hydrocarbon chains comprising up to 3 carbon atoms, or mixtures thereof. Preferred amine oxides for use herein are amine oxides where R1 comprises from 8 to 14 carbon atoms, preferably are C8-C10 amine oxide or C12-C14 amine oxide and R2 and R3 are both methyl. Such a C8-C10 amine oxide is commercially available under the trade name Barlox.RTM. 10S, from Lonza. Such a C12-C14 amine oxide suitable to be used herein is commercially available
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Bolam B. M.
Boyer Charles
Echler, Sr. R. S.
McGinty Douglas J.
The Procter & Gamble & Company
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