Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Patent
1996-02-02
1998-01-13
Hertzog, Ardith
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
510365, 510422, 510424, 510427, 510430, 510432, 510435, 510437, 510495, 510497, 510505, 510509, C11D 310, C11D 183, C11D 1831
Patent
active
057079480
DESCRIPTION:
BRIEF SUMMARY
TECHNICAL FIELD
The present invention relates to concentrated cleaning compositions. Although the present invention relates primarily to cleaning compositions for hard surfaces, it may also be of interest for other cleaning compositions including dishwashing and laundry detergent compositions.
BACKGROUND OF THE INVENTION
Concentrated cleaning compositions are well known in the art. Concentrated compositions are mainly characterized by the fact that they comprise a higher concentration of active ingredients compared to a conventional cleaning composition, and a problem which is typically encountered when formulating concentrated cleaning compositions is therefore the physical stability of such compositions. Indeed, because such compositions comprise a high amount of active ingredients in a limited amount of water, stability problems appear which lead, if not solved, to compositions which separate into several phases. This phenomenon affects the performance of the composition and is visually noticeable, thereby rendering such formulations unfit for commercialization.
Various solutions have been proposed to solve this problem which typically involve the use of specific stabilizing ingredients, or hydrotropes. Such ingredients have the sole function of stabilizing the composition. They thus increase the cost of formulating such compositions without providing any cleaning performance benefits, and they furthermore require to free up parts in the formulation which could otherwise be used to formulate more actives.
For instance, EP 316 726 discloses concentrated compositions in the form of microemulsions which comprise water, perfume, a surfactant and a so-called co-surfactant. The co-surfactant is said to reduce the interfacial tension at interfaces between dispersed and continuous phases of an emulsion of said surfactant, thereby creating a stable microemulsion. The so-called co-surfactants in the '726 publication are listed as specific glycol ethers, which are traditionally regarded as solvents in this field, or specific carboxylic acids. The co-surfactants in the '726 publication do not appear to participate to the overall cleaning performance of the product.
It is therefore an object of the present invention to formulate a stable concentrated cleaning composition without using ingredients which are provided for the sole purpose of providing stability to the compositions herein, but which also participate significantly to the cleaning performance of said compositions.
It has now been found that this object can be met by formulating a concentrated aqueous compositions comprising at least one short chain surfactant, i.e. with a hydrophobic group consisting of a C.sub.6 -C.sub.10 alkyl chain, said compositions not being in the form of microemulsions. Said short chain surfactants provide stability to the compositions herein and, in the same time, significantly boost the overall cleaning performance, especially grease cleaning, both in neat and dilute usage.
SUMMARY OF THE INVENTION
The compositions herein are stable clear concentrated cleaning compositions comprising from 10% to 90% by weight of the total composition of water and at least one short chain surfactant comprising a C.sub.6 -C.sub.10 alkyl chain as its hydrophobic portion. The compositions herein are preferably not in the form of microemulsions.
DETAILED DESCRIPTION OF THE INVENTION
The compositions of the present invention are concentrated aqueous compositions. By concentrated, it is meant herein that the compositions comprise from 10% to 90% by weight of the total composition of water, preferably from 15% to 75%, most preferably from 30% to 70%.
The compositions according to the present invention are clear and stable. By clear and stable, it is meant herein that the compositions of the present invention are macroscopically substantially transparent, in the absence of any opacifier, and that said compositions do not macroscopically separate into separate phases during at least 1 month, at temperatures ranging from 4.degree. C. to 50.degree.
REFERENCES:
patent: 3983078 (1976-09-01), Collins
patent: 4235758 (1980-11-01), Dawson et al.
patent: 4272395 (1981-06-01), Wright
patent: 4671895 (1987-06-01), Erilli et al.
patent: 5057246 (1991-10-01), Bertho et al.
patent: 5318728 (1994-06-01), Surutzidis et al.
Evers Marc Francois Theophile
Geboes Peter Rosalia Joannes
Michael Daniel Wayne
Morini Massimo
Policicchio Nicola John
Aylor Robert B.
Hertzog Ardith
The Procter & Gamble & Company
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