Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
2000-04-06
2001-08-28
Gupta, Yogendra N. (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C510S238000, C510S362000, C510S384000, C510S405000, C510S421000, C510S433000, C510S504000, C510S432000, C510S242000
Reexamination Certificate
active
06281182
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 and disinfecting hard surfaces and which is effective in sanitizing surfaces, 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.
SUMMARY OF THE INVENTION
The instant compositions are cationic free and exhibit good grease removal properties combined with excellent disinfecting properties and the compositions do not leave 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. The selection of essential oils is also important because not only they will communicate the efficacy of the product to the consumer but also because they are effective bactericide.
In one aspect, the invention generally provides a stable, clear multi purpose, hard surface cleaning composition especially effective in disinfecting the surface being cleaned and 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 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 5%, more preferably 0.1 to 3% of an anionic surfactant
from 0 to 4%, more preferably 0.1% to 1% of at least one disinfecting agent such as essential oil or perfume;
from 0.1 to 10% of at least one amphoteric surfactant;
0.1% to 5%, more preferably 0.3% to 3% of a proton donating agent;
0 to 6% of at least a water soluble solvent which is a C
1
-C
4
alkanol;
0 to 1.5 %, more preferably 0.3% to 1.5% of triethanol amine;
1% to 10% of a blend of water soluble glycol ethers; and
the balance being water.
REFERENCES:
patent: 5912223 (1999-06-01), Drapier
patent: 6121224 (2000-09-01), Foneny et al.
Dormal Didier
Leonard Isabelle
Boyer Charles
Colgate-Palmolive Co.
Gupta Yogendra N.
Nanfoldt Richard E.
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