Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Heterogeneous arrangement
Reexamination Certificate
2001-12-07
2002-08-06
Ogden, Necholus (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Heterogeneous arrangement
C510S439000, C510S422000, C510S424000, C510S490000, C510S504000, C510S505000
Reexamination Certificate
active
06429182
ABSTRACT:
FIELD OF INVENTION
The present invention relates to a nonwoven fabric which has been impregnated with an antibacterial 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 the instant cleaning wipes which have improved cleaning characteristics in the minimization of streaking and residue.
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 out in water emulsions.
SUMMARY OF THE INVENTION
An antibacterial cleaning wipe for cleaning hard surfaces such as walls, counter tops and floors comprises a nonwoven fabric containing at least polyester fibers and viscose fibers, wherein is the nonwoven fabric is impregnated with a liquid cleaning composition containing a zwitterionic surfactant, at least one nonionic surfactant, a proton donating agent, a cosurfactant, an alkanol, a disinfecting agent and water, wherein the liquid cleaning composition is not an emulsion and does not contain proteins, metallic salts, enzymes, amides, sodium hypochlorite, dimethicone, N-methyl-2-pyrrolidone, monoalkyl phosphate or silicon based sulfosuccinate.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to an antibacterial cleaning wipe for hard surfaces which comprises approximately:
(a) 20 wt. % to 30 wt. % of a nonwoven fabric which consists of at least polyester fibers and viscose fibers and preferably consists of 60 wt. % to 95 wt. % of wood pulp fibers, 2.5 wt. % to 20 wt. % of viscose fibers and 2.5 wt. % to 20 wt. % of polyester fibers; and
(b) 70 wt. % to 80 wt. % of a liquid cleaning composition being impregnated in said nonwoven fabric, wherein said liquid cleaning composition comprises:
(i) 0.5 wt. % to 8 wt. %, more preferably 1.0 wt. % to 6 wt. % of at least one ethoxylated nonionic surfactant;
(ii) 0.25 wt. % to 10 wt. %, more preferably 0.5 wt. % to 6 wt. % of a C
1
-C
4
alkanol;
(iii) 0.5 wt. % to 8 wt. %, more preferably 1 wt. % to 5 wt. % of a cosurfactant;
(iv) 0.1 wt. % to 5 wt. %, more preferably 0.25 wt. % to 4 wt. % of a zwitterionic surfactant;
(v) 0.1 wt. % to 2 wt. %, more preferably 0.2 wt. % to 1.4 wt. % of a disinfecting agent
(vi) 0.1 wt. % to 4 wt. %, more preferably 0.2 wt. % to 3.0 wt. % of a proton donating agent;
(vii) 0 to 1.0 wt. %, more preferably 0.8 wt. % to 0.1 wt. % of a perfume; and
(viii) the balance being water, wherein the composition has a pH of about 3.0 to about 5.5, more preferably about 3.5 to about 5.0.
The water-soluble zwitterionic surfactant (betaine), which may be used in the instant cleaning composition, constitutes about 0.1% to 5%, preferably 0.25% to 4%, by weight and provides good foaming properties and mildness to the composition. The zwitterionic surfactant is a water soluble betaine having the general formula:
wherein X
−
is selected from the group consisting of SO
3
−
and CO
2
−
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 alkyldimethyl 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. A preferred betaine is coco (C
8
-C
18
) amidopropyl dimethyl betaine.
As used herein and in the appended claims the term “perfume” is used in its ordinary sense to refer to and include any non-water soluble fragrant substance or mixture of substances including natural (i.e., obtained by extraction of flower, herb, blossom or plant), artificial (i.e., mixture of natural oils or oil constituents) and synthetically produced substance) odoriferous substances. Typically, perfumes are complex mixtures of blends of various organic compounds such as alcohols, aldehydes, ethers, aromatic compounds and varying amounts of essential oils (e.g., terpenes) such as from 0% to 80%, usually from 10% to 70% by weight, the essential oils themselves being volatile odoriferous compounds and also serving to dissolve the other components of the perfume.
In the present invention the precise composition of the perfume is of no particular consequence to cleaning performance so long as it meets the criteria of water immiscibility and having a pleasing odor. Naturally, of course, especially for cleaning compositions intended for use in the home, the perfume, as well as all other ingredients, should be cosmetically acceptable, i.e., non-toxic, hypoallergenic, etc.. The instant compositions show a marked improvement in ecotoxocity as compared to existing commercial products.
The water soluble nonionic surfactants utilized in this invention are commercially well known and include the primary aliphatic alcohol ethoxylates, secondary aliphatic alcohol ethoxylates, alkylphenol ethoxylates and ethylene-oxide-propylene oxide condensates on primary alkanols, such a Plurafacs (BASF) and condensates of ethylene oxide with sorbitan fatty acid esters such as the Tweens (ICI). The nonionic synthetic organic detergents generally are the condensation products of an organic aliphatic or alkyl aromatic hydrophobic compound and hydrophilic ethylene oxide groups. Practically any hydrophobic compound having a carboxy, hydroxy, amido, or amino group with a free hydrogen attached to the nitrogen can be condensed with ethylene oxide or with the polyhydration product thereof, polyethylene glycol, to form a water-soluble nonionic detergent. Further, the length of the polyethenoxy chain can be adjusted to achieve the desired balance between the hydrophobic and hydrophilic elements.
The nonionic detergent class includes the condensation products of a higher alcohol (e.g., an alkanol containing about 8 to 18 carbon atoms in a straight or branched chain configuration) condensed with about 5 to 30 moles of ethylene oxide, for example, lauryl or myristyl alcohol condensed with about 16 moles of ethylene oxide (EO), tridecanol condensed with about 6 to moles of EO, myristyl alcohol condensed with about 10 moles of EO per mole of myristyl alcohol, the condensation product of EO with a cut of coconut fatty alcohol containing a mixture of fatty alcohols with alkyl chains varying from 10 to about 14 carbon atoms in length and wherein the condensate contains either about 6 moles of EO per mole of total alcohol or about 9 moles of EO per mole of alcohol and tallow alcohol ethoxylates containing 6 EO to 11 EO per mole of alcohol.
A preferred group of the foregoing nonionic surfactants are the Neodol ethoxylates (Shell Co.), which are higher aliphatic, primary alcohol containing about 9-15 carbon atoms, such as C
9
-C
11
alkanol condensed with 2.5 to 10 moles of ethylene oxide (NEODOL 91-2.5 or -5 or -6 or -8), C
12-13
alkanol condensed with 6.5 moles ethylene oxide (Neodol 23-6.5), C
12-15
alkanol condensed with 12 moles ethylene oxide (Neodol 25-12), C
14-15
alkanol condensed with 13 moles ethylene oxide (Neodol 45-13), and the like.
An especially preferred nonionic system comprises the mixture of a nonionic surfactant formed from a C
9
-C
11
alkanol condensed with 2 to 3.5 moles of ethylene oxide (C
9-11
alcohol EO 2 to 3.5:1) with a nonionic surfactant formed from a C
9
-C
11
alkanol condensed with 7 to 9 moles of ethylene oxide (C
9
-C
11
alcohol EO
Dormal Didier
Julemont Jean
Leonard Isabelle
Colgate-Palmolive Company
Nanfeldt Richard E.
Ogden Necholus
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