Liquid hard-surface cleaning compositions

Details Liquid hard-surface cleaning compositions Liquid hard-surface cleaning compositions

2000-06-19

2002-04-09

Hardee, John (Department: 1751)

Cleaning compositions for solid surfaces, auxiliary compositions

Cleaning compositions or processes of preparing

Liquid composition

C510S475000, C510S506000

Reexamination Certificate

active

06369019

ABSTRACT:

TECHNICAL FIELD
The present invention relates to liquid compositions for cleaning hard-surfaces.
BACKGROUND OF THE INVENTION
Liquid compositions for cleaning hard-surfaces have been disclosed in the art. Much of the focus for such compositions has been on providing outstanding cleaning on a variety of surfaces and soils. However, such compositions are not fully satisfactory from a consumer viewpoint, especially regarding the soil release properties imparted to the hard-surfaces treated therewith. Indeed, consumers are looking for liquid cleaning compositions, whereby next-time (subsequent) cleaning is more facilitated. The object of the present invention is to formulate a liquid cleaning composition for removal of various soils from hard-surfaces, that will facilitate the next-time cleaning operation.
It has now been found that the next-time cleaning performance is improved when a hard-surface has first been treated with a liquid composition comprising particular antiresoiling ingredients, namely a polyalkoxylene glycol diester as defined herein, as a first antiresoiling ingredient, together with a vinylpyrrolidone homopolymer or copolymer, as a second antiresoiling ingredient. Indeed, the compositions of the present invention allow improved next-time cleaning performance, as compared to the same compositions comprising only one of said antiresoiling ingredients as defined herein, at the same total level of antiresoiling ingredients, or another antiresoiling polymeric ingredient like for example poly (trimethyl aminoethyl) methacrylate at the same total level of antiresoiling ingredients.
More particularly, it has surprisingly been found that the use of such a polyalkoxylene glycol diester, as defined herein, together with such a vinylpyrrolidone homopolymer or copolymer, such as a quaternized or unquaternized vinylpyrrolidone/dialkylaminoalkyl acrylate or methacrylate copolymer, results in a synergistic effect on next-time cleaning performance.
Advantageously, the compositions herein may be used to clean hard-surfaces made of a variety of materials like glazed and non-glazed ceramic tiles, vinyl, no-wax vinyl, linoleum, melamine, glass, plastics, plastified wood, both in neat and diluted conditions, e.g., up to a dilution level of 1:400 (composition:water).
A further advantage of the present invention is that the next-time cleaning performance is obtained with the compositions according to the present invention on various types of stains/soils including typical greasy stains like kitchen grease and other tough stains such as burnt/sticky food residues typically found in kitchens, while delivering good gloss to said surfaces.
Another advantage associated to the compositions according to the present invention comprising the polyalkoxylene glycol diester and vinylpyrrolidone homopolymer or copolymer, is that they have the ability to provide good shine to the surface they have cleaned. Indeed, less formation of watermarks and/or even limescale deposits are observed on a surface having been cleaned with the compositions of the present invention and later comes in contact with water, for example, during a rinse operation. Advantageously, the shine benefit delivered to the surface even persists after several cycles of rinsing, thus providing long lasting protection against formation of watermarks and/or even limescale deposits on the surface, and hence long lasting shiny surfaces. Another advantage of the liquid compositions of the present invention is that not only next-time cleaning performance is improved, but that also good first time cleaning performance is delivered. Yet a further advantage of the compositions of the present invention is that faster drying is obtained on the surfaces that have been cleaned therewith, this both when used diluted or when used neat. In other words, the housewife will have the advantage to shorten the total time of the cleaning operation of hard-surfaces and diminish the inconvenience of having wet floors in her home.
BACKGROUND ART
WO 94/26858 discloses a liquid hard-surface composition (pH 2-8) with nonionic surfactants (1-30%) and anionic polymers having an average molecular weight of less than 1,000,000, said polymers being free of quaternary nitrogen groups. Said compositions bring initial cleaning benefit in addition to the anti-soiling benefit. Indeed, WO 94/26858 discloses that acrylic, methacrylic and maleic anhydride derivatives such as copolymers of styrene with maleic produce a streak-free finish after drying. No liquid compositions comprising a combination of a polyalkoxylene glycol diester together with a vinylpyrrolidone homopolymer or copolymer are disclosed.
EP-A-635 567 discloses liquid compositions for cleaning solid surfaces comprising a cleaning agent capable of being deposited on the surface during cleaning and of forming a dried layer adhered to the surface, said layer having a cohesive strength such that at least outermost surface portion of the layer is removable by further washing. Polyvinylpyrrolidone is disclosed. However, no polyalkoxylene glycol diesters are disclosed.
SUMMARY OF THE INVENTION
The present invention encompasses a liquid hard-surface cleaning composition comprising a polyalkoxylene glycol diester according to the formula:
wherein the substituents R
1
and R
2
each independently are substituted or unsubstituted, saturated or unsaturated, linear or branched hydrocarbon chains having from 1 to 36 carbon atoms and wherein n is an integer from 10 to 400, and a vinylpyrrolidone homopolymer or copolymer.
The present invention also encompasses a process of cleaning hard-surfaces wherein a liquid composition as defined herein above, is contacted with said surfaces.
DETAILED DESCRIPTION OF THE INVENTION
The Liquid Compositions:
As a first essential ingredient, the compositions according to the present invention comprise a polyalkoxylene glycol diester or a mixture thereof, as defined herein after.
Typically, the compositions of the present invention comprise from 0.001% to 20% by weight of the total composition of said polyalkoxylene glycol diester or a mixture thereof, preferably from 0.01% to 10%, more preferably from 0.1% to 5% and most preferably from 0.2% to 2%.
Suitable polyalkoxylene glycol diesters for use herein have the following formula:
in this formula the substituents R
1
and R
2
each independently are substituted or unsubstituted, saturated or unsaturated, linear or branched hydrocarbon chains having from 1 to 36 carbon atoms, and n is an integer of from 10 to 400.
Preferably R
1
and R
2
each independently are substituted or unsubstituted, linear or branched alkyl groups or alkenyl groups having from 1 to 36 carbon atoms, preferably from 1 to 30, more preferably from 1 to 24, even more preferably from 1 to 22 and most preferably from 1 to 18, or aryl groups having up to 36 carbon atoms, preferably from 6 to 36, more preferably from 6 to 30. Preferably n is an integer from 20 to 400, more preferably from 40 to 300, even more preferably from 40 to 200 and most preferably from 40 to 150.
The preferred polyalkoxylene glycol diesters for use according to the present invention have a molecular weight of at least 200, more preferably from 400 to 10,000 and most preferably from 800 to 6,000.
Suitable polyalkoxylene glycol diesters for use herein include O′O-distearyl polyethylene glycol diester (MW 6000) or O′O-dioleyl polyethylene glycol diester (MW 560).
Such polyalkoxylene glycol diesters may be commercially available from Akzo Nobel under the name KESSCO PEG 600ODS®, or from Lonza under the name Pegosperse® or from Huls under the name Marlosol FS®.
As a second essential ingredient, the compositions according to the present invention comprise a vinylpyrrolidone homopolymer or copolymer or a mixture thereof.
Typically, the compositions of the present invention comprise from 0.001% to 20% by weight of the total composition of a vinylpyrrolidone homopolymer or copolymer or a mixture thereof, preferably from 0.01% to 10%, more preferably from 0.1% to 5% and most preferably from 0.2% to 2%

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