Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – Specific organic component
Patent
1999-01-25
2000-07-11
Gupta, Yogendra
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
Specific organic component
510273, 510382, 510405, 510470, 510505, 1062871, C11D 343, C11D 322, C08K 554
Patent
active
060873191
DESCRIPTION:
BRIEF SUMMARY
This invention relates to a method of stabilizing aqueous organosilane/fluoroorganosilane solutions containing silicon bonded hydrolysable groups.
BACKGROUND ART
Aqueous organo/fluoroorganosilanes solutions containing silicon bonded hydrolysable groups have several uses. The hydrolysable groups enable such compounds to irreversibly attach themselves to substrates containing hydroxyl or other silicone reactive species.
The significance of this `tethering` action, in this instance, is to retard re-soiling, impart shine and make easier to clean a variety of bathroom surfaces such as enamel, plastic and porcelain, also giving residual antimicrobial/algicidal activity.
It is desirable that the `tethering` agent is delivered via a predominately aqueous media with minimal solvent content.
SUMMARY OF THE INVENTION
Studies undertaken by the present inventor in order to accomplish the above purpose revealed that the use of one or more non-ionic surface active agents, one of which should be an alkyl saccharide, together with a silane derivative produced an improved detergent composition which helps to prevent re-soiling, gives residual antiricrobial/algicidal properties and residual `Shine` characteristics. Accordingly, in one embodiment the subject invention provides a solution as defined in claim 1 comprising an alkyl saccharide surface active agent and a silane derivative, and in another embodiment the subject invention is directed to use of said alkyl saccharide in storage stable compositions.
Hard surface cleaning can be achieved with the composition of the subject invention in the absence of water soluble organic quaternary ammonium compounds contrary to the disclosure in a previously published patent U.S. Pat. No. 5,411,585. The composition, instead, stabilizes the organosilane/fluoroorganosilane by the use of saccharides sometimes with an additional non-ionic co-surfactant. For environmental reasons the absence of ammonium quaternary compounds is desired.
Other and further objects, features and advantages of the invention will appear more fully from the following description.
DETAILED DESCRIPTION
All amounts given herein (in the absence of a statement of the contrary) are given as amounts by weight of the total amount of the aqueous solution of the subject invention.
Organosilanes which can be used in the invention are disclosed in reference U.S. Pat. No. 5,411,585.
The organosilanes having hydrolysable groups which are useful in this invention form clear solutions in water at room temperature (20.degree. C.) at least to the extent of the active concentration level to be used in the aqueous solutions. Examples of such organosilanes are methyltrimethoxysilane, 3-(trimethoxysilyl)propyldimethyl-octadecyl ammonium chloride and 3-(trimethoxysilyl)propyl-methyldi(decyl)ammonium chloride. We have found that compounds which do not give clear solutions in water at 20.degree. C., such as 3-(triethoxysilyl)propoyldimethyloctadecyl ammonium chloride are not useful in the present invention.
As mentioned above, the aqueous organosilane/fluoroorganosilane solutions of the subject invention are stable solutions. Stable solutions are clear solutions which do not show haze.
Preferably said solutions are storage stable, i.e. said solutions are clear and non-hazy after storage.
More preferably said storage stable solutions are clear and non-hazy after storage at room temperature (20.degree. C.) for 6 months, even more preferably after such storage for 1 year.
Preferably said organosilanes have structural formula (otherwise substituted or unsubstituted) hydrocarbon group, phenyl, or a nonionic or cationic, substituted-hydrocarbon group containing at least one oxygen or nitrogen group or salts of such substituted-hydrocarbon groups.
In the above formulas, A is --OH or a hydrolysable group such as a halide like --C1, --Br and --I, alkoxy or alkoxyether such as those of the formula --OR.sup.1 and --OR.sup.2A OR.sup.1 where each R.sup.1 is R.sup.2 or hydrogen, R.sup.2 is an alkyl group of from 1 to 4 carbon atoms such as me
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patent: 4005025 (1977-01-01), Kinstedt
patent: 4167488 (1979-09-01), Murtaugh
patent: 5411585 (1995-05-01), Avery et al.
patent: 5418006 (1995-05-01), Roth et al.
patent: 5759980 (1998-06-01), Russo et al.
Garrett Dawn L.
Gupta Yogendra
S. C. Johnson & Son Inc.
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