For dish washing application

Details For dish washing application For dish washing application

2001-11-13

2003-11-25

Page, Thurman K. (Department: 1616)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Wearing apparel, fabric, or cloth

C510S424000, C510S427000, C428S221000

Reexamination Certificate

active

06652869

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a disposable single use dish cleaning wipe which is substantially dry to the touch. The product comprises of an insoluable single or multilayer substrate which has been impregnated with a cleaning composition. Use of the substrate enhances foaming, cleaning and grease removal for cleaning dishware, flatware, pots and pans.
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, 6,063,397 and 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 substantially dry single use cleaning wipe for dishwashing application comprises a water insoluable substrate, impregnated with a cleaning composition containing an anionic sulfonate surfactant, a sulfate surfactant, a polyethylene glycol and at least one nonionic surfactant, wherein the liquid cleaning composition does not contain more than 10 wt. %, more preferably 7.0 wt. % of water and the composition is not an emulsion and does not contain proteins, enzymes, amides, sodium hypochlorite, dimethicone, a proton donating agent, N-methyl-2-pyrrolidone, monoalkyl phosphate or silicone based sulfosuccinate.
The present invention also relates to the method of manufacturing a disposable, single use cleaning wipe for cleaning dishware, flatware, pots and pans.
The present invention furthermore relates to the method for cleaning dishware, flatware, pots and pans with the cleaning wipe product described herein.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a cleaning wipe for cleaning dishware, flatware, pots and pans which comprises approximately:
(a) 20 wt. % to 95 wt. % of a water insoluable substrate; and
(b) 5 wt. % to 80 wt. % of a cleaning composition being impregnated in said water insoluable substrate, wherein said cleaning composition comprises:
(i) 20 to 60 wt. % of at least one alkali metal salt of an anionic sulfonate surfactant;
(ii) 0 to 8 wt. %, more preferably 0.5 wt. % to 6 wt. % of an alkali metal salt of an anionic sulfate or an ethoxylated alkyl ether sulfonate surfactant;
(iii) 0 to 6 wt. %, more preferably 0.1 wt. % to 4 wt. % of a proton donating agent;
(iv) 0 to 3 wt. %, more preferably 0.25 wt. % to 2.5 wt. % of a C
1
-C
4
alkanol such as ethanol;
(v) 30 wt. % to 65 wt. % of at least one nonionic surfactant; and
(vi) 1 wt. % to 10 wt. % of a polyethylene glycol, wherein the composition contains less than 10 wt. %, more preferably less than 7 wt. % of water has a pH of about 6.0 to about 7.5, at a concentration of about 10 grams of the composition in 100 ml. of water.
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 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 C
8
-C
18
alkyl sulfate salts and 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
8
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
)
n
OX 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)

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