Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-04-14
2003-03-25
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...
C510S424000, C510S426000, C510S438000, C510S463000, C510S499000, C510S503000
Reexamination Certificate
active
06537955
ABSTRACT:
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a composition which provides a cleaning, disinfecting and shine performance on surfaces, especially hard surfaces.
BACKGROUND OF THE INVENTION
Efficient cleaning and disinfecting compositions are usually formulated based on surfactants that deliver the required cleaning and disinfecting properties to the surfaces treated therewith. Particularly suitable surfactants having such properties are for instance amine oxide surfactants. However, when formulating compositions with such surfactants it has been observed that they may left residues on the hard-surfaces treated therewith resulting in surfaces that do not appear shiny.
Indeed, the problem of providing shiny surfaces is often compromised by residues of the compositions which are left on said surfaces and which appear as streaks as water evaporation is completed. The problem of the residuality is even more noticeable where the composition is used to treat surfaces made of glossy materials, such as glossy ceramic tiles, windows and mirrors, or such materials as polyurethane-coated PVC which is widely used in Northern America. Furthermore, nowadays, many products are formulated or can be used as no-rinse products. In such conditions or with such products, the problem of residuality has become more acute.
Accordingly, there is a need for a composition which provides effective cleaning and disinfecting performance, but also provides the treated surfaces with a shiny effect without any residues.
Numerous solutions have been proposed in the art to solve this need, including the use of an acid, magnesium ions, or the use of certain solvents as described in WO 95/21229, EP 0 639 833 or U.S. Pat. No. 3,839,234.
The applicant has now surprisingly found that this need could also be met by formulating a composition which comprises a surfactant system comprising an amine oxide (0.01%-10%), a long chain alkyl sulphate (0.01%-20%) and a short chain alkyl sulphate (0.01%-20%). Indeed, it has been found that the addition of such a long chain alkyl sulphate, in a composition comprising an amine oxide and a short chain alkyl sulphate improves the shine properties delivered by said composition when used to treat a hard surface, this both when used in neat or diluted conditions.
This finding is especially surprising as the use of amine oxide surfactants alone and alkyl sulphate surfactants alone, which both provide effective cleaning and contribute to effective disinfecting, have been found to form crystals upon drying, which resulted in spotting residues on the treated surface. Surprisingly, the use of a mixture of an amine oxide as defined herein, a long chain alkyl sulphate and a short chain alkyl sulphate as defined herein, in a composition, especially a liquid composition, not only provides an effective cleaning and effective disinfecting of the hard-surfaces treated with this composition, but also causes said residues to appear less, or even not to appear anymore.
It is therefore an advantage of the invention to provide a composition which provides effective cleaning, disinfecting as well as shine performance on surfaces.
The applicant has further found that the addition of solvents to this surfactant system provides further enhanced cleaning and shine benefit.
In a preferred embodiment, the compositions herein further comprise a peroxygen bleach and/or an antimicrobial compound like antimicrobial essential oils or actives thereof. These ingredients provide enhanced disinfection performance on a hard-surface, even at high dilution levels, e.g., up to dilution levels of from 1:100 (composition:water).
It is thus another advantage of the invention to provide a composition with further improved disinfection performance.
It is yet another advantage of the invention to provide a composition which is mild to the skin.
SUMMARY OF THE INVENTION
The present invention relates to a cleaning and disinfecting composition comprising a surfactant system comprising:
from 0.01% to 10% by weight of the total composition of an amine oxide,
from 0.01% to 20% by weight of the total composition of a short chain alkyl sulphate surfactant according to the formula R
1
SO
4
M wherein R
1
represents a saturated or unsaturated alkyl group containing from 6 to 8 carbon atoms and M is H or a cation
and from 0.01% to 20% by weight of the total composition of a long chain alkyl sulphate surfactant according to the formula R
2
SO
4
M wherein R
2
represents a saturated or unsaturated alkyl group containing from 9 to 30 carbon atoms and M is H or a cation.
In a preferred embodiment of the invention, the composition comprises a solvent for further enhanced cleaning and shine performance of the composition.
In another preferred embodiment of the invention, the composition further comprises a peroxygen bleach and/or an antimicrobial compound like an antimicrobial essential oil or actives thereof or mixtures thereof for providing the composition with further improved disinfecting performance.
The present invention also encompasses a process of treating a surface by applying on said surface a composition according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION
Amine Oxide Surfactant
Amine oxides for use herein are compounds corresponding to the formula:
R R′R″N→O
wherein R is a primary alkyl group containing 6-24 carbons, preferably 6-20 carbon atoms, more preferably 8-18 carbons, and wherein R′ and R″ are, each, independently selected from methyl, ethyl and 2-hydroxyethyl. The arrow in the formula is a conventional representation of a semi-polar bond.
The preferred amine oxides are those in which the primary alkyl group has a straight chain in at least most of the molecules, generally at least 70%, preferably at least 90% of the molecules, and the amine oxides which are especially preferred are those in which R contains 8-18 carbons and R′ and R″ are both methyl.
Exemplary of the preferred amine oxides are the N-hexyldimethylamine oxide, N-octyldimethylamine oxide, N-decyldimethylamine oxide, N-dodecyl dimethylamine oxide, N-tetradecyldimethylamine oxide, N-hexadecyl dimethylamine oxide, N-octadecyldimethylamine oxide, N-eicosyldimethylamine oxide, N-docosyldimethylamine oxide, N-tetracosyl dimethylamine oxide, the corresponding amine oxides in which one or both of the methyl groups are replaced with ethyl or 2-hydroxyethyl groups and mixtures thereof. A most preferred amine oxide for use herein is N-decyldimethylamine oxide.
These amine oxides surfactants are desired in the compositions of the present invention due to their cleaning properties and disinfecting properties. Indeed, they are particularly effective on greasy soap scum and/or kitchen dirt when a composition comprising them is used both in neat or diluted conditions. Also they contribute to the disinfecting properties of the compositions herein. The compositions of the present invention comprise from 0.01% to 10% by weight of the total composition of an amine oxide surfactant or a mixture thereof, preferably from 0.1% to 9%, more preferably from 0.5% to 5% and most preferably from 0.5% to 3%.
Short Chain Alkyl Sulphate Surfactant
Short chain alkyl sulphate surfactants for use herein are those according to the formula R
1
SO
4
M wherein R
1
represents a saturated or unsaturated alkyl group containing from 6 to 8 carbon atoms, preferably from 7 to 8 carbon atoms. The alkyl group can be in straight or branched configuration, and preferably in straight configuration. M is H or a cation, e.g., an alkali metal cation (e.g., sodium, potassium, lithium, calcium, magnesium etc) or ammonium or substituted ammonium cations. Specific examples of substituted ammonium cations include methyl-, dimethyl-, trimethyl-ammonium and quaternary ammonium cations, such as tetramethyl-ammonium, dimethyl piperdinium and cations derived from alkanolamines such as ethylamine, diethylamine, triethylamine, mixtures thereof, and the like.
Suitable examples are sodium or potassium or ammonium octyl sulphate. For example so
Raso Floriana
Severini Antonella
Trani Marina
Camp Jason J.
Ogden Necholus
The Procter & Gamble & Company
Waugh Kevin L.
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