Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With halogen – nitrogen – oxygen – or phosphorus containing...
Reexamination Certificate
2001-11-19
2003-12-23
Boyer, Charles (Department: 1751)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With halogen, nitrogen, oxygen, or phosphorus containing...
C510S180000, C510S191000, C510S197000, C510S199000, C510S237000, C510S238000, C510S382000, C510S391000, C510S422000, C510S432000, C510S490000, C510S503000, C510S504000
Reexamination Certificate
active
06667289
ABSTRACT:
BACKGROUND OF THE INVENTION
Cleaning compositions are commercially important products and enjoy a wide field of utility in assisting in the removal of dirt and grime from surfaces, especially glass and glossy hard surfaces (i.e., glazed ceramic tiles, polished metals, enameled metal surfaces, glazed porcelain). While the art is replete with various formulations which provide some cleaning benefit and perhaps some disinfecting benefit to surfaces, there is a real and continuing need for such further formulations.
BRIEF SUMMARY OF THE INVENTION
Thus, it is among the objects of the invention to provide improved aqueous cleaning compositions, which are especially useful in cleaning, especially hard surfaces particularly glass and other glossy hard surfaces. Such a composition is particularly useful for use “as-is” by the ultimate user. It is a further object of the invention to provide a process for cleaning hard surfaces, which process comprises the step of: providing an aqueous cleaning composition as outlined herein, and applying an effective amount of the same to a surface, especially a hard surface requiring such cleaning treatment.
According to one aspect of the present invention there is provided an aqueous cleaning composition which provides sanitizing and/or disinfecting and cleaning characteristics to treated surfaces, particularly hard surfaces, which comprises the following constituents:
(A) a quaternary ammonium surfactant compound having germicidal properties;
(B) a surfactant system which includes at least one amine oxide surfactant, and at least one further surfactant selected from carboxylates and N-acyl amino acid surfactants, especially sarcosinates;
(C) a solvent system containing an alkylene glycol ether solvent further with a C
1
-C
6
alcohol, especially where the C
1
-C
6
alcohol is isopropanol;
(D) an alkalizing agent such as an alkanolamide, especially an alkylamine in particular diethylamine; and
(E) water.
The compositions may include one or more further optional additive constituents, sometimes referred to as adjuvants, in minor, but effective amounts. By way of non-limiting example, such optional additives include: coloring agents such as dyes and pigments, fragrances, other pH adjusting agents, pH buffer compositions, chelating agents, rheology modification agents as well as one or more further surfactant compounds, in particular nonionic, amphoteric or zwitterionic surfactant compounds. Desirably, in order to reduce the likelihood of undesired buildup upon treated surfaces, especially hard surfaces, the amounts of these additive constituents are present in only minor amounts, i.e., less than 10%, preferable less than 5% wt. based on the total weight of the aqueous cleaning composition being provided herein. The compositions are characterized in providing a disinfecting effect.
DETAILED DESCRIPTION OF THE INVENTION
The compositions according to the invention include (A) one or more quaternary ammonium surfactant compounds having germicidal properties. Exemplary useful quaternary ammonium compounds and salts thereof include quaternary ammonium germicides which may be characterized by the general structural formula:
where at least one of R
1
, R
2
, R
3
and R
4
is a alkyl, aryl or alkylaryl substituent of from 6 to 26 carbon atoms, and desirably the entire cation portion of the molecule has a molecular weight of at least 165. The alkyl substituents may be long-chain alkyl, long-chain alkoxyaryl, long-chain alkylaryl, halogen-substituted long-chain alkylaryl, long-chain alkylphenoxyalkyl, arylalkyl, etc. The remaining substituents on the nitrogen atoms other than the abovementioned alkyl substituents are hydrocarbons usually containing no more than 12 carbon atoms. The substituents R
1
, R
2
, R
3
and R
4
may be straight-chained or may be branched, but are preferably straight-chained, and may include one or more amide, ether or ester linkages. The counterion X may be any salt-forming anion which permits water solubility of the quaternary ammonium complex. Exemplary counterions include halides, for example chloride, bromide or iodide, or methosulfate or counterions based on saccharides.
Exemplary quaternary ammonium salts within the above description include the alkyl ammonium halides such as cetyl trimethyl ammonium bromide, alkyl aryl ammonium halides such as octadecyl dimethyl benzyl ammonium bromide, N-alkyl pyridinium halides such as N-cetyl pyridinium bromide, and the like. Other suitable types of quaternary ammonium salts include those in which the molecule contains either amide, ether or ester linkages such as octyl phenoxy ethoxy ethyl dimethyl benzyl ammonium chloride, N-(laurylcocoaminoformylmethyl)-pyridinium chloride, and the like. Other very effective types of quaternary ammonium compounds which are useful as germicides include those in which the hydrophobic radical is characterized by a substituted aromatic nucleus as in the case of lauryloxyphenyltrimethyl ammonium chloride, cetylaminophenyltrimethyl ammonium methosulfate, dodecylphenyltrimethyl ammonium methosulfate, dodecylbenzyltrimethyl ammonium chloride, chlorinated dodecylbenzyltrimethyl ammonium chloride, and the like.
Preferred quaternary ammonium compounds which act as germicides and which are be found useful in the practice of the present invention include those which have the structural formula:
wherein R
2
and R
3
are the same or different C
8
-C
12
alkyl, or R
2
is C
12-16
alkyl, C
8-18
alkylethoxy, C
8-18
alkylphenolethoxy and R
3
is benzyl, and X is a halide, for example chloride, bromide or iodide, or methosulfate. The alkyl groups recited in R
2
and R
3
may be straight-chained or branched, but are preferably substantially linear.
Particularly useful quaternary germicides include compositions which include a single quaternary compound, as well as mixtures of two or more different quaternary compounds. Particularly useful quaternary germicides include which are described as being a blend of alkyl dimethyl benzyl ammonium chlorides; BARDAC® 205M, BARDAC® 2050, BARDAC® 2080, BARDAC® 2250, BTC® 812, BTC® 818 and BTC® 1010 which are described as being based on dialkyl(C
8
-C
10
)dimethyl ammonium chloride; BARDAC® 2250 and BARDAC® 2280 or BTC® 1010 which are described as being a composition which includes didecyl dimethyl ammonium chloride; BARDAC® LF and BARDAC® LF 80 which are described as being based on dioctyl dimethyl ammonium chloride; BARQUAT® MB-50, BARQUAT® MB-80, BARQUAT® MX-50, BARQUAT® MX-80, BARQUAT® OJ-50, BARQUAT® OJ-80, BARDAC® 208M, HYAMINE® 3500, HYAMINE® 3500-NF, BTC® 50, BTC® 824, BTC® 835, BTC® 885, BTC® 2565, BTC® 2658, BTC® 8248 or BTC® 8358 each described as being based on alkyl dimethyl benzyl ammonium chloride (benzalkonium chloride); BARQUAT® 4250, BARQUAT® 4280, BARQUAT® 4250Z, BARQUAT® 4280Z, BTC® 471, BTC® 2125, or BTC® 2125M each described as being a composition based on alkyldimethylbenzyl ammonium chloride and/or alkyldimethylethylbenzyl ammonium chloride; BARQUAT® MS-100 or BTC® 324-P-100 each described as being based on myristyldimethylbenzyl ammonium chloride; HYAMINE® 2389 described as being based on methyldodecylbenzyl ammonium chloride and/or methyldodecylxylene-bis-trimethyl ammonium chloride; HYAMINE® 1622 described as being an aqueous solution of benzethonium chloride; as well as BARQUAT® 1552 or BTC® 776 described as being based on alkyl dimethyl benzyl ammonium chloride and/or dialkyl methyl benzyl ammonium chloride, BARQUAT® 50-MAB described as being based on alkyldimethylethyl ammonium bromide and LONZABAC®-12.100 described as being based on an alkyl tertiary amine. Polymeric quaternary ammonium salts based on these monomeric structures are also considered desirable for the present invention. One example is POLYQUAT® described as being a 2-butenyldimethyl ammonium chloride polymer. (Each of these recited materials are presently commercially available from Lonza, Inc., Fairlawn, N.J. and/or from Stepan Co., Northfield Ill.).
In the cleaning compositions according to the invention, the quaternary ammonium compound co
Harrison Kenneth Allen
Lynch Ann Marie
Weller Jeanne Marie
Akin Gump Strauss Hauer & Feld L.L.P.
Boyer Charles
Reckitt Benckiser , Inc.
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