Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2001-09-06
2002-03-26
Ogden, Necholus (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S247000, C510S475000, C510S477000, C510S482000
Reexamination Certificate
active
06362148
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to an anti-lime scaling and anti-soap scum cleaning composition for ceramic surfaces, wherein the composition includes a surfactant, excluding cationic surfactants, a hydrophilizing polyethylene oxide polycarboxylate copolymer and water.
BACKGROUND OF THE INVENTION
Numerous cleaning compositions have been disclosed in various patents. However, a major problem with these cleaning compositions is that limescale and soap scum are not effectively removed from the surface being treated. Cleaning compositions known in the art for effectively removing limescale deposits are acidic compositions. It is also known in the art that the prevention of limescale formation and soap scum buildup on hard surfaces can be achieved by using chelating or sequestering agents in alkaline liquid cleaning compositions.
EP-0875555 discloses the use of a polysaccharide polymer or a mixture thereof in a liquid acidic composition for treating a hard-surface, to reduce the formation of limescale deposits on the surface when it comes in contact with water. The liquid composition has a pH below 4.
EP-0875554 teaches the use of an acid-stable polymer selected from the group consisting of a polycarboxylate, a sulphonated polystyrene polymer, a vinylpyrrolidone homo/copolymer, a polyalkoxylene glycol, and mixture thereof, in a liquid acidic composition having a pH below 5. Said acidic compositions are suitable for removing limescale-containing stains from a hard-surface.
EP-0983294 describes a liquid composition having a pH of from 7 to 14 for cleaning hard surfaces, comprising a homo or copolymer of vinylpyrrolidone and a polysacharride polymer. However, no liquid neutral pH compositions as described in the present invention comprising a polyalkylene oxide polycarboxylate copolymer are disclosed therein.
U.S. Pat. No. 6,034,046 discloses the use of an agent for the prevention of soap scum buildup, wherein said agent is selected from the group consisting of a trisodium salt of methyl glycine diacetic acid, a polyaspartic acid, imino disuccinic acid sodium salt and glutamic acid-N,N-diacetic acid sodium salt. Another agent described in U.S. Pat. No. 6,034,046 which can be used for the prevention of soap scum buildup is a sodium salt of a copolymer of maleic anhydride and an olefin. However, no liquid neutral pH compositions as described in the present invention comprising a polyalkylene oxide polycarboxylate copolymer are disclosed therein.
SUMMARY OF THE INVENTION
The present invention relates to an anti-lime scaling cleaning composition which comprises a surfactant selected in the group consisting of zwitterionic surfactants, anionic surfactants or mixtures thereof and a hydrophilizing polyethylene oxide polycarboxylate copolymer and water, wherein the composition does not contain cationic surfactants, nonionic surfactants containing ethoxylate groups, silicon containing polymer, amino containing polymers, copolymers of polyvinyl pyrrolidone or polyvinyl pyrridine N-oxide polymers.
It is an object of the instant invention to provide an anti-lime scale cleaning composition, wherein the hydrophilizing polymer renders the treated surface hydrophilic such that the contact angle of water on the treated surface is less than 40°, more preferably less than 30°.
A further object of the instant invention is to provide an anti-lime scale cleaning composition which renders the treated surface free of streaks, smear and spots, after the surface has been treated with the cleaning composition and subsequently dried.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a ceramic cleaning composition which renders the surface being treated hydrophilic and free of limescale, wherein the composition comprises approximately by weight:
(a) 0.01% to 10%, more preferably 0.1% to 5% of at least a surfactant, excluding cationic surfactants;
(b) 0.01% to 5%, more preferably 0.1% to 2% of a hydrophilizing polymer which is a polyethylene oxide polycarboxylate copolymer;
(c) 0.1% to 10% of a water-mixable cosurfactant having either limited ability or substantially no ability to dissolve oily or greasy soil; and
(d) the balance being water, wherein the composition does not contain an amino containing polymer, a silicon containing polymer, a nonionic surfactant containing ethoxylate groups, a copolymer of polyvinyl pyrrolidone or polyvinyl pyrridine N-oxide polymers.
The surfactant used in the present invention is selected from the group consisting of zwitterionic surfactants, anionic surfactants or mixtures thereof. The zwitterionic surfactant used is a water soluble betaine having the general formula
wherein X
−
is selected from the group consisting of COO
−
and SO
3
−
and R
1
is an alkyl group having 10 to about 20 carbon atoms, preferably 12 to 16 carbon atoms, or the amido radical:
wherein R is an alkyl group having about 9 to 19 carbon atoms and a is the integer 1 to 4; R
2
and R
3
are each alkyl groups having 1 to 3 carbons and preferably 1 carbon; R
4
is an alkylene or hydroxyalkylene group having from 1 to 4 carbon atoms and, optionally, one hydroxyl group. Typical alkyidimethyl betaines include decyl dimethyl betaine or 2-(N-decyl-N, N-dimethyl-ammonia) acetate, coco dimethyl betaine or 2-(N-coco N, N-dimethylammonia) acetate, myristyl dimethyl betaine, palmityl dimethyl betaine, lauryl dimethyl betaine, cetyl dimethyl betaine, stearyl dimethyl betaine, etc. The amidobetaines similarly include cocoamidoethylbetaine, cocoamidopropyl betaine and the like. The amidosulfobetaines include cocoamidoethylsulfobetaine, cocoamidopropyl sulfobetaine and the like. A preferred betaine is coco (C
8
-C
18
) amidopropyl dimethyl betaine. Three preferred betaine surfactants are Empigen BS/CA from Albright and Wilson, Rewoteric AMB 13 and Goldschmidt Betaine L7.
The anionic sulfonate surfactants which may be used in the composition of this invention are water soluble and include the sodium, potassium, ammonium and ethanolammonium salts of linear C
8
-C
16
alkyl benzene sulfonates; C
10
-C
20
paraffin sulfonates, C
8
-C
18
alkyl sulfates, ethoxylated alkyl ether sulfates and mixtures thereof. The preferred anionic sulfonate surfactant is an alkyl ethoxylated alkyl ether sulfate surfactant.
The paraffin sulfonates may be monosulfonates or di-sulfonates and usually are mixtures thereof, obtained by sulfonating paraffins of 10 to 20 carbon atoms. Preferred paraffin sulfonates are those of C
12-18
carbon atoms chains, and more preferably they are of C
14-17
chains. Paraffin sulfonates that have the sulfonate group(s) distributed along the paraffin chain are described in U.S. Pat. Nos. 2,503,280; 2,507,088; 3,260,744; and 3,372,188; and also in German Patent 735,096. Such compounds may be made to specifications and desirably the content of paraffin sulfonates outside the C
14-17
range will be minor and will be minimized, as will be any contents of di- or poly-sulfonates.
Examples of suitable other sulfonated anionic detergents are the well known higher alkyl mononuclear aromatic sulfonates, such as the higher alkylbenzene sulfonates containing 9 to 18 or preferably 9 to 16 carbon atoms in the higher alkyl group in a straight or branched chain, or C
8-15
alkyl toluene sulfonates. A preferred alkylbenzene sulfonate is a linear alkylbenzene sulfonate having a higher content of 3-phenyl (or higher) isomers and a correspondingly lower content (well below 50%) of 2-phenyl (or lower) isomers, such as those sulfonates wherein the benzene ring is attached mostly at the 3 or higher (for example 4, 5, 6 or 7) position of the alkyl group and the content of the isomers in which the benzene ring is attached in the 2 or 1 position is correspondingly low. Preferred materials are set forth in U.S. Pat. No. 3,320,174, especially those in which the alkyls are of 10 to 13 carbon atoms.
The C
8-18
ethoxylated alkyl ether sulfate surfactants have the structure
R—(OCH
2
CH
2
)
n
OSO
3
−
M
+
wherein n is about 1 to about 22 more preferably 1 to 3 and R is an alk
Broze Guy
Durbut Patrick
Colgate-Palmolive Co.
Nanfeldt Richard E.
Ogden Necholus
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