Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-11-21
2002-03-19
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S181000, C510S182000, C510S235000, C510S237000, C510S243000, C510S405000, C510S426000, C510S432000, C510S433000, C510S504000
Reexamination Certificate
active
06358900
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to compositions for cleaning hard surfaces, and in particular to compositions suitable for cleaning glass and glossy or shiny surfaces.
A particularly important feature of such compositions is that the surface when cleaned must not have any streaks or smears and, although numerous-compositions for cleaning glass and like materials have been proposed, providing compositions which clean effectively whilst avoiding streaking or smearing has been a particular technical challenge.
A further advantage of cleaning compositions for glass and shiny or glossy surfaces is the ability to reduce or to avoid the build up of static charge. It will be appreciated that the presence of static charge on the surface causes the rapid re-deposition of dust and like particles by attraction o such particles onto the surface from the air. The benefits achieved by cleaning of the surface are thus rapidly diminished.
Up until now anionic surfactants have not been added in the same composition as cationic surfactants because the anionic surfactants interfere with the activity of cationic surfactants in so far as anti-static and anti-microbial properties are concerned. Surprisingly it has now been found that by using a quaternary ammonium compound as the cationic surfactant, compositions containing a cationic and anionic surfactant can be made so that the benefit of both the anionic surfactant (i.e. high detergency and low smearing) and the benefit of the cationic surfactants (i.e. good anti-microbial and good anti-static properties) can be obtained.
Accordingly, it is an aim of the present invention to provide a cleaning composition, in particular for glass and glossy or shiny surfaces, which has good cleaning properties, does not cause smears or streaks, and also has good anti-microbial activity as well as having good anti-static properties, that is, the ability to reduce or prevent the build up of static charge on the surface.
SUMMARY OF THE INVENTION
According to the present invention, there is provided an aqueous cleaning composition, preferably a hard surface cleaning composition, comprising:
i) 0.01%-5% of one or more ethoxylated quaternary ammonium compounds (hereinafter component i);
ii) 1%-10% of at least one glycol ether and/or C
1-22
alcohols (hereinafter component ii); and
iii) 0.005% to 2% of an anionic surfactant (hereinafter component iii);
all percentages being by weight.
Component i) preferably comprises one or more compounds of the formula I
in which
A
−
is an anion preferably Cl
−
or SO
4
−
;
R is an C
10-25
alkyl or C
10-25
alkenyl radical preferably C
12-22
alkyl or C
12-22
alkenyl;
each of R
1
and R
2
independently is selected from hydrogen and C
1-6
alkyl;
n is preferably a number from 2 to 20, especially 3-6 ; and
m is 0 to 2, preferably 0.
More preferred quaternary ammonium compounds are C
12-16
alkyl ethoxylated ammonium compounds. Suitable commercially available ethoxylated ammonium compounds include polyethylene glycol products e.g. cocoalkyl pentaethoxymethylammonium methosulphate (PEG-5 cocomonium methosulphate—derived from coconut fatty acid).
For clarity in formula I the ethylene oxide recurring unit or the propylene oxide recurring unit may be directly attached to the N atom.
In preferred formulations, component i) is preferably present in a total amount of from 0.1% to 2% and more preferably from 0.1% to 0.5%.
Component ii) is preferably one or more compounds of the formula II:
R
3
—O—CH
2
—CH(OH)—R
4
(II)
in which
R
3
is a C
2-6
alkyl or C
2-6
alkenyl; and
R
4
is a C
1-6
alkyl radical preferably C
1-4
alkyl.
Particularly preferred glycol ethers are butoxypropanol and methoxyisopropanol. Ethylene glycol monobutyl ether is also efficacious, but is less preferred for environmental reasons.
Component ii) is preferably present in a total amount of from 2% to 8%, more preferably from 3%-6%, and especially from 3.5% to 5.5%.
Preferably component iii) is selected from sarcosinates, more preferably, sodium lauroyl sarcosinates. Preferably component iii) is present in a total amount of 0.01-1%, more preferably, 0.02-0.5%.
REFERENCES:
patent: 4284435 (1981-08-01), Fox
patent: 4806260 (1989-02-01), Broze et al.
patent: 4919830 (1990-04-01), Durbut et al.
patent: 4919839 (1990-04-01), Durbut et al.
patent: 5252245 (1993-10-01), Garabedian et al.
patent: 5795853 (1998-08-01), Denis et al.
patent: 2 075 043 (1981-11-01), None
patent: WO95/33812 (1995-12-01), None
patent: WO98/44080 (1998-10-01), None
Copy of GB Patent Office Search Report for GB 9804022.3 dated Jun. 17, 1998.
Laing Mark
Wigley Susan
Boyer Charles
Fish & Richardson P.C.
Reckitt Benckiser (UK) Limited
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