Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Heterogeneous arrangement
Reexamination Certificate
2002-05-31
2003-03-18
Ogden, Necholus (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Heterogeneous arrangement
C510S295000, C510S499000, C510S501000, C510S503000, C510S505000, C510S424000, C510S428000, C134S042000, C428S208000, C015S209100
Reexamination Certificate
active
06534472
ABSTRACT:
FIELD OF INVENTION
The present invention relates to an antibacterial dishwashing cleaning wipe which is single or multi layer fabric substrate which has been impregnated with a liquid cleaning composition.
BACKGROUND OF THE INVENTION
The patent literature describes numerous wipes for both body cleaning and cleaning of hard surfaces but none describe wipes for cleaning dishware flatware, pots and pans. U.S. Pat. Nos. 5,980,931, 6,063,397and 6,074,655 teach a substantially dry disposable personal cleansing product useful for both cleansing and conditioning the skin and hair. U.S. Pat. No. 6,060,149 teaches a disposable wiping article having a substrate comprising multiple layers.
U.S. Pat. Nos. 5,756,612; 5,763,332; 5,908,707; 5,914,177; 5,980,922 and 6,168,852 teach cleaning compositions which are inverse emulsions.
U.S. Pat. Nos. 6,183,315 and 6,183,763 teach cleaning compositions containing a proton donating agent and having an acidic pH. U.S. Pat. Nos. 5,863,663; 5,952,043; 6,063,746 and 6,121,165 teaches cleaning compositions which are oil in water emulsions.
SUMMARY OF THE INVENTION
A single use cleaning wipe for dishwashing application comprises a water insoluble substrate, impregnated with an antibacterial cleaning composition containing at least 20 wt. % of a mixture of at least three anionic surfactants, a proton donating agent, a zwitterionic surfactant, polyethylene glycol and water.
The liquid antibacterial cleaning compositions of this invention are not an emulsion and do not contain an ethoxylated nonionic surfactant, potassium sorbate, a polysaccharide polymer, a polycarboxylate polymer, polyvinyl alcohol polymer, polyvinylpyrrolidone polymer, methyl vinyl ether polymer or a glucoside surfactant
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a cleaning wipe for dishware, flatware, pots and pans which comprises approximately:
(a) 20 wt. % to 95 wt. % of a water insoluble substrate; and
(b) 5 wt. % to 80 wt. % of a liquid antibacterial cleaning composition being impregnated in said water insoluble substrate, wherein said liquid cleaning composition comprises:
(i) 7 wt. % to 16 wt. % of an alkali metal salt of an anionic sulfonated surfactant;
(ii) 6 wt. % to 15 wt. % of an alkali metal salt or ammonium salt of an ethoxylated alkyl ether sulfate anionic surfactant;
(iii) 0.1 wt. % to 4 wt. % of a zwitterionic surfactant;
(iv) 7 wt. % to 16 wt. % of an alkaline earth metal salt of a sulfonated anionic surfactant;
(v) 0.5 wt. % to 8 wt. % of a polyethylene glycol;
(vi) 0.1% to 4 wt. % of a proton donating agent; and
(vii) the balance being water, wherein the composition does not contain an ethoxylated nonionic surfactant, potassium sorbate, a polysaccharide polymer, a polycarboxylate polymer, polyvinyl alcohol polymer, polyvinylpyrrolidone polymer, polyethylene glycol polymer, methyl vinyl ether polymer or glucoside surfactant and the antibacterial cleaning composition has a Gram Positive Residual Effective Index as measured by the method set forth in U.S. Pat. 6,284,259 of less than 0.35, preferably less than 0.3.
Suitable water-soluble non-soap, anionic surfactants used in the instant compositions include those surface-active or detergent compounds which contain an organic hydrophobic group containing generally 8 to 26 carbon atoms and preferably 10 to 18 carbon atoms in their molecular structure and at least one water-solubilizing group selected from the group of sulfonate, sulfate and carboxylate so as to form a water-soluble detergent. Usually, the hydrophobic group will include or comprise a C
8
-C
22
alkyl, alkyl or acyl group. Such surfactants are employed in the form of water-soluble salts and the salt-forming cation usually is selected from the group consisting of sodium, potassium, ammonium, magnesium and mono-, di- or tri-C
2
-C
3
alkanolammonium, with the sodium, magnesium and ammonium cations again being preferred.
Examples of suitable sulfonated anionic surfactants are the well known higher alkyl mononuclear aromatic sulfonates such as the higher alkyl benzene sulfonates containing from 10 to 16 carbon atoms in the higher alkyl group in a straight or branched chain, C
8
-C
15
alkyl toluene sulfonates and C
8
-C
15
alkyl phenol sulfonates.
A preferred sulfonate is a mixture of an alkali metal ammonium salt and an alkaline earth metal salt of a linear alkyl benzene sulfonate having a high content of 3-(or higher) phenyl isomers and a correspondingly low content (well below 50%) of 2-(or lower) phenyl isomers, that is, wherein the benzene ring is preferably attached in large part 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.
Other suitable anionic surfactants are the olefin sulfonates, including long-chain alkene sulfonates, long-chain hydroxyalkane sulfonates or mixtures of alkene sulfonates and hydroxyalkane sulfonates. These olefin sulfonate detergents may be prepared in a known manner by the reaction of sulfur trioxide (SO
3
) with long-chain olefins containing 8 to 25, preferably 12 to 21 carbon atoms and having the formula RCH═CHR
1
where R is a higher alkyl group of 6 to 23 carbons and R
1
is an alkyl group of 1 to 17 carbons or hydrogen to form a mixture of sultones and alkene sulfonic acids which is then treated to convert the sultones to sulfonates. Preferred olefin sulfonates contain from 14 to 16 carbon atoms in the R alkyl group and are obtained by sulfonating an &agr;-olefin.
Other examples of suitable anionic sulfonate surfactants are the paraffin sulfonates containing 10 to 20, preferably 13 to 17, carbon atoms. Primary paraffin sulfonates are made by reacting long-chain alpha olefins and bisulfites and paraffin sulfonates having the sulfonate group distributed along the paraffin chain are shown in U.S. Pat. Nos. 2,503,280; 2,507,088; 3,260,744; 3,372,188; and German Patent 735,096.
Examples of satisfactory anionic sulfate surfactants are the alkali metal or ammonium salt C
8
-C
18
alkyl sulfate salts the ethoxylated C
8
-C
18
alkyl ether sulfate salts having the formula R(OC
2
H
4
)n OSO
3
M wherein n is 1 to 12, preferably 1 to 5, and M is a metal cation selected from the group consisting of sodium, potassium, ammonium, magnesium and mono-, di- and triethanol ammonium ions. The alkyl sulfates may be obtained by sulfating the alcohols obtained by reducing glycerides of coconut oil or tallow or mixtures thereof and neutralizing the resultant product.
On the other hand, the ethoxylated alkyl ether sulfates are obtained by sulfating the condensation product of ethylene oxide with a C
8
-C
18
alkanol and neutralizing the resultant product. The alkyl sulfates may be obtained by sulfating the alcohols obtained by reducing glycerides of coconut oil or tallow or mixtures thereof and neutralizing the resultant product. The ethoxylated alkyl ether sulfates differ from one another in the number of moles of ethylene oxide reacted with one mole of alkanol. Preferred alkyl sulfates and preferred ethoxylated alkyl ether sulfates contain 10 to 16 carbon atoms in the alkyl group.
The ethoxylated C
8
-C
12
alkylphenyl ether sulfates containing from 2 to 6 moles of ethylene oxide in the molecule also are suitable for use in the inventive compositions. These surfactants can be prepared by reacting an alkyl phenol with 2 to 6 moles of ethylene oxide and sulfating and neutralizing the resultant ethoxylated alkylphenol.
Other suitable anionic surfactants are the C
9
-C
15
alkyl ether polyethenoxyl carboxylates having the structural formula R(OC
2
H
4
)nOX COOH wherein n is a number from 4 to 12, preferably 5 to 10 and X is selected from the group consisting of
CH
2,
(C(O)R
1
and
wherein R
1
is a C
1
-C
3
alkylene group. Preferred compounds include C
9
-C
11
alkyl ether polyethenoxy (7-9) C(O) CH
2
CH
2
COOH, C
13
-C
15
alkyl ether polyethenoxy (7-9)
and C
10
-C
12
alkyl ether polyethenoxy (5-7) CH2COOH. These compounds may be prepared by condensing ethylene oxide with app
Arvanitidou Evangelia
Nascimbeni Bruce
Thomas Barbara
Wisniewski Karen
Colgate-Palmolive Company
Nanfeldt Richard E.
Ogden Necholus
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