Cleaning and liquid contact with solids – Processes – Work handled in bulk or groups
Reexamination Certificate
1999-08-16
2002-10-08
Gupta, Yogendra N. (Department: 1751)
Cleaning and liquid contact with solids
Processes
Work handled in bulk or groups
C134S042000, C510S413000, C510S421000, C510S475000, C510S476000, C510S506000, C510S528000, C510S535000
Reexamination Certificate
active
06460548
ABSTRACT:
TECHNICAL FIELD
The present invention relates to liquid compositions for cleaning hard-surfaces.
BACKGROUND
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 soils and surfaces. 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 that would render a hard surface first treated therewith less prone to soil adherence and thus facilitate next-time (subsequent) cleaning operation.
Thus, 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 a particular antiresoiling ingredient, namely a dicapped polyalkoxylene glycol of the formula R
1
—O—(CH
2
—CHR
2
O)
n
—R
3
, wherein the substituents R
1
and R
3
each independently are substituted or unsubstituted, saturated or unsaturated, linear or branched hydrocarbon chains having from 1 to 30 carbon atoms, or amino bearing linear or branched, substituted or unsubstituted hydrocarbon chains having from 1 to 30 carbon atoms, R
2
is hydrogen or a linear or branched hydrocarbon chain having from 1 to 30 carbon atoms, and wherein n is an integer greater than 0. Indeed, it has surprisingly been found that the use of such a dicapped polyalkoxylene glycol, in a liquid composition, provides improved next-time cleaning performance on a hard-surface first treated therewith at low total level of antiresoiling ingredients. Thus, in its broadest aspect, the present invention encompasses the use of a dicapped polyalkoxylene glycol as defined herein, in a liquid composition, to inhibit adherence of soils on a hard-surface after the surface has been first treated with the composition, thereby facilitating the removal of the soils from the surface on next-time cleaning. The present invention also encompasses liquid cleaning compositions with particular dicapped polyalkoxylene glycols as defined herein after.
An advantage of the present invention is that the next-time cleaning performance is obtained according to the present invention on various types of stains/soils including typical greasy stains like kitchen grease, and burnt/sticky food residues like burnt milk stains, typically found in a kitchen. Furthermore, another advantage of the present invention is that the next-time cleaning benefit is obtained by using a biodegradable and cost efficient antiresoiling ingredient.
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, as well as good surface appearance after cleaning.
Yet another advantage is that the liquid compositions according to the present invention 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, metallic surfaces, both in neat and diluted conditions, e.g., up to a dilution level of 1 200 (composition:water).
The following patent applications are representative of the prior art:
EP-A-374 471 discloses liquid hard-surface cleaning compositions which are formulated to leave on the surface treated a protective barrier layer which serves to protect the surface against further soil deposition. These compositions comprise a polyethylene glycol alkylphenyl ether, lecithin and an aminofunctional polydimethylsiloxane copolymer as a protective barrier compound and one or more glycols. No dicapped polyalkoxylene glycols as defined in the present invention 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. No dicapped polyalkoxylene glycols as defined in the present invention are disclosed.
EP-A-379 256 discloses acidic hard surface compositions (pH 2-4) comprising different cleaning ingredients amongst which polybeta methyl diethyl ammonium ethyl methacrylate methyl sulfate (MDAEM). Secondary cleaning benefit is expressly mentioned. No dicapped polyalkoxylene glycols as defined in the present invention are disclosed.
EP-A-326 795 discloses the use of polyethylenglycolether of the formula R
1
—O—(CH
2
—CH
2—O)
n
—R
2
, wherein R
1
is linear or branched alkyl- or alkenyl group of 20 to 28 carbon atoms, R
2
is an alkyl group of 4 to 8 carbon atoms and n is from 6 to 20, as a foam reducing agent, in a detergent formula.
European patent application number 96870070.8 discloses a cleaning composition comprising a hypochlorite bleaching component, a hypochlorite compatible surfactant and a nonionic surfactant having the formula R1(OR2)
n
OR3, wherein R
1
is a C8-C18 linear or branched alkyl or alkenyl group, aryl group, alkaryl group, R2is a C2-C10 linear or branched alkyl group, R3 is a C1-C10 alkyl or alkenyl group and n is an integer ranging in the range of from 1 to 20.
Actually, the next-time cleaning performance benefit associated to a dicapped polyalkoxylene glycol as defined herein has not been acknowledged in the prior art.
SUMMARY OF THE INVENTION
The present invention encompasses the use of a dicapped polyalkoxylene glycol of the formula R
1
—O—(CH
2
—CHR
2
O)
n
—R
3
, wherein the substituents R
1
and R
3
each independently are substituted or unsubstituted, saturated or unsaturated, linear or branched hydrocarbon chains having from 1 to 30 carbon atoms, or amino bearing linear or branched, substituted or unsubstituted hydrocarbon chains having from 1 to 30 carbon atoms, R
2
is hydrogen or a linear or branched hydrocarbon chain having from 1 to 30 carbon atoms, and wherein n is an integer greater than 0, in a liquid composition, to inhibit adherence of soils on a hard-surface after said surface has been first treated with said composition, thereby facilitating the removal of said soils from said surface on next-time cleaning.
The present invention also encompasses a liquid hard-surface cleaning composition comprising a dicapped polyalkoxylene glycol of the formula R
1
—O—(CH
2
—CHR
2
O)
n
—R
3
, wherein the substituents R
1
and R
3
each independently are substituted or unsubstituted, saturated or unsaturated, linear or branched hydrocarbon chains having from 1 to 30 carbon atoms, or amino bearing linear or branched, substituted or unsubstituted hydrocarbon chains having from 1 to 30 carbon atoms, R
2
is hydrogen or a linear or branched hydrocarbon chain having from 1 to 30 carbon atoms, and wherein n is an integer greater than 0, with the proviso that when both the substituents R
1
and R
3
each independently are substituted or unsubstituted, saturated or unsaturated, linear or branched hydrocarbon chains having from 1 to 30 carbon atoms and R
2
is hydrogen or a linear or branched hydrocarbon chain having from 1 to 30 carbon atoms, then n is greater than 20.
The present invention further 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
In its broadest embodiment, the present invention encompasses the use of a dicapped polyalkoxylene glycol as defined herein, in a liquid composition, to inhibit adherence of soils on a hard-surface after said surface has been first treated with said composition, thereby facilitating the removal of soils from said surface on next-time cleaning.
By “treated”, it is meant herein that the hard-s
Evers Marc Francois Theophile
Gordon Neil James
Camp Jason J.
Gupta Yogendra N.
Mruk Brian P.
The Procter & Gamble & Company
Waugh Kevin L.
LandOfFree
Liquid hard-surface cleaning compositions based on specific... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Liquid hard-surface cleaning compositions based on specific..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Liquid hard-surface cleaning compositions based on specific... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2940726