Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Liquid composition
Reexamination Certificate
2001-12-10
2003-11-11
Webb, Gregory E. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Liquid composition
C510S238000, C510S365000, C510S424000, C510S506000
Reexamination Certificate
active
06645929
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to an improved multi purpose liquid cleaner in a microemulsion form, to be used neat, in particular for cleaning hard surfaces and which is effective, in removing grease soil and also dries fast leaving the surfaces streak free.
BACKGROUND OF THE INVENTION
Disinfectant composition based on cationic and nonionic are well known. However, these compositions while very efficient in disinfecting surfaces, generally do not remove grease and oil as desired; hence, leaving residues and streaks on surfaces. Addition of an efficient anionic surfactant cleaner, to the cationic surfactant, either creates instability problems or deactivates the disinfectant behavior of the cationic. Moreover, most cationic compositions are not environmentally friendly. Anionic and nonionic mixtures have a good grease removal properties, but do not perform at all to sanitize the surface being cleaned.
U.S. Pat. No. 6,281,182 teaches a disinfecting microemulsion composition having a pH of 2.7 to 4.5 and the composition contains triethanol wherein the instant compositions do not contain triethanol amine and have a pH of 5.0 to 8.0. Indeed, such composition having very good degreasing properties while not leaving streaks or residue on the surface being cleaned are suitable for products which are not disinfecting. In that case, low pH is no longer needed and is even to be avoided for improving safety to surfaces such as marble.
SUMMARY OF THE INVENTION
The instant compositions are cationic free and exhibit good grease removal properties while not leaving streak or residue on the surface being cleaned.
The described compositions are to be used mainly neat in a spray form. The compositions contain a lower level of surfactant than current all purpose cleaning compositions and have a richer level of solvent than surfactant. In order to have a product which leaves the surfaces shiny after cleaning, the instant compositions are builder free.
A safe solvent system used in the instant compositions which has been found effective are glycol ethers such as propylene glycol butyl ether (PNB) alone or in combination with ethanol. PNB brings a significant benefit in degreasing performance and also promotes a fast drying out of the surface which has been cleaned. Oily material such as essential oil or perfume, when added to a composition, usually increase the streaks on surfaces.
The combination of a glycol ether with the surfactant system of the present invention allows a faster water film dry out time than obtained with current commercial spray formulations. It is important to select the perfume such as an essential oil not only to satisfy the cosmetic and the marketing needs, but also to have a minimum of residue left on the surface being cleaned.
In one aspect, the invention generally provides a stable, clear multi purpose, hard surface cleaning composition especially effective in the removal of oily and greasy oil while a fast dry out time and without leaving streaks on the surface being cleaned. The compositions include approximately, on a weight basis:
from 0.5% to 10% of a nonionic surfactant formed from a C
8
-C
18
alkanol and about 6 to about 9, preferably about 7 to about 8.5 moles of ethylene oxide;
0.1% to 4% of an ethoxylated nonionic surfactant formed from a C
9
-C
11
alkanol and about 2 to about 3 moles of ethylene oxide;
0.1% to 10% of an amphoteric surfactant;
from 0 to 6%, more preferably 0.1 to 5% of an anionic surfactant from 0 to %, of a perfume or essential oil;
0.01% to 0.25% of an alkali metal hydroxide such as sodium hydroxide and/or potassium hydroxide;
0 to 0.2%, more preferably 0.05% to 0.2% of a proton donating agent;
0 to 6% of at least a water soluble solvent which is a C
1
-C
4
alkanol;
1% to 10% of a blend of water soluble glycol ethers; and
the balance being water, wherein the composition has a pH of 5.0 to 8.0.
DETAILED DESCRIPTION OF THE INVENTION
The present invention relates to a stable hard surface cleaning composition approximately by weight:
0.5% to 10% of an ethoxylated nonionic surfactant formed from a C
8
-C
18
alkanol and about 6 to about 9, preferably about 7 to about 8.5 moles of ethylene oxide;
0.1% to 4% of an ethoxylated nonionic surfactant formed from a C
9
-C
11
alkanol and about 2 to about 3 moles of ethylene oxide;
0 to 6%, more preferably 0.1 to 5% of an anionic surfactant;
0 to %, of a perfume or essential oil;
0.1% to 10% of an amphoteric surfactant,
0.5% to 5% of at least one mono, di or tri-propylene glycol alkyl ether, wherein the alkyl group has 1 to 5 carbon atoms, such as propylene glycol N-butyl ether;
0.5% to 5% of an ethylene glycol alkyl ether, wherein the alkyl group has 1 to 5 carbon atoms or a diethylene glycol alkyl ether, wherein the alkyl group has 1 to 5 carbon atoms such as diethylene N-butyl ether; 0 to 6%, more preferably 0.1% to 5% of a C
1
-C
4
alkanol such as ethanol;
0.01% to 0.25% of an alkali metal hydroxide such as sodium hydroxide and/or potassium hydroxide;
0 to 0.2%, more preferably 0.05% to 0.2% of a proton donating agent selected from the group consisting of hydroxy containing organic acids such as lactic acid, citric acid or ortho hydroxy benzoic acid and inorganic acids such as a sulfuric acid or hydrochloric acid and mixtures thereof; and
the balance being water, wherein the composition has a pH of 5.0 to 8.0 and the composition does not contain triethanol amine, an amine oxide surfactant, a cationic surfactant or an alkyl polyglucoside surfactant,
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.
Suitable essential oils are selected from the group consisting of: Anethole 20/21 natural, Aniseed oil china star, Aniseed oil globe brand, Balsam (Peru), Basil oil (India), Black pepper oil, Black pepper oleoresin 40/20, Bois de Rose (Brazil) FOB, Borneol Flakes (China), Camphor oil, White, Camphor powder synthetic technical, Cananga oil (Java), Cardamom oil, Cassia oil (China), Cedarwood oil (China) BP, Cinnamon bark oil, Cinnamon leaf oil, Citronella oil, Clove bud oil, Clove leaf, Coriander (Russia), Coumarin 69° C. (China), Cyclamen Aldehyde, Diphenyl oxide, Ethyl vanilin, Eucalyptol, Eucalyptus oil, Eucalyptus citriodora, Fennel oil, Geranium oil, Ginger oil, Ginger oleoresin (India), White grapefruit oil, Guaiacwood oil, Gurjun balsam, Heliotropin, Isobornyl acetate, Isolongifolene, Juniper berry oil, L-methyl acetate, Lavender oil, Lemon oil, Lemongrass oil, Lime oil distilled, Litsea Cubeba oil, Longifolene, Menthol crystals, Methyl cedryl ketone, Methyl chavicol, Methyl salicylate, Musk ambrette, Musk ketone, Musk xylol, Nutmeg oil, Orange oil, Patchouli oil, Peppermint oil, Phenyl ethyl alcohol, Pimento berry oil, Pimento leaf oil, Rosalin, Sandalwood oil, Sandenol, Sage oil, Clary sage, Sassafras oil, Spearmint oil, Spike lavender, Tagetes, Tea tree oil, Vanilin, Vetyver oil (Java), Wintergreen, Allocimene, Arbanex™, Arbanol®, Bergamot oils, Camphene, Alpha-Campholenic aldehyde, I-Carvone, Cineoles, Citral, Citronellol Terpenes, Alpha-Citronellol, Citronellyl Acetate, Citronellyl Nitrile, Para-Cymene, Dihydroanethole, Dihydrocarveol, d-Dihydrocarvone, Dihydrolinalool, Dihydromyrcene, Dihydromyrcenol, Dihydromyrcenyl Acetate, Dihydroterpineol, Dimethyloctanal, Dimethyloctanol, Dimethyloctanyl Acetate, Estragole, Ethyl-2 Methylbutyrate, Fenchol, Fernlol™, Florilys™, Gera
Dormal Didier
Leonard Isabelle
Colgate-Palmolive Company
Nanfeldt Richard E.
Webb Gregory E.
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