Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – With halogen – nitrogen – oxygen – or phosphorus containing...
Reexamination Certificate
1999-03-03
2002-05-28
Warden, Sr., Robert J. (Department: 1744)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
With halogen, nitrogen, oxygen, or phosphorus containing...
C510S382000, C510S383000, C510S385000, C422S028000, C422S037000, C424S049000, C514S901000
Reexamination Certificate
active
06395697
ABSTRACT:
The present invention relates to disinfectant compositions. More particularly the present invention relates to concentrated liquid disinfectant compositions which are normally diluted in a larger volume of water to form a working solution therefrom, and which exhibit a blooming effect when diluted.
Blooming is a property exhibited by dilutable compositions such as known cleaning compositions, specifically pine-oil type cleaning compositions which contain a significant amount (generally at least about 5% and more) of pine oil. Certain phenolic disinfectant compounds, such as LYSOL disinfectant concentrate (Reckitt & Colman, Inc., Montvale N.J.) also exhibit such a blooming property. Blooming may be characterized as the formation of milky, creamy or cloudy appearance which is manifested when a dilutable composition is added to a larger volume or quantity of water. Blooming is an important characteristic from a consumer standpoint as it provides a visual indicator and impression to the consumer that the concentrated product contains active cleaning and/or disinfecting constituents which are released upon addition of the concentrate to a volume of water. Such is an important visual indicator of apparent efficacy of a concentrated product.
It has now been found that it is now possible to produce certain concentrate compositions utilizing these selected constituents in particular formulations which provide blooming type cleaning compositions in a concentrated liquid form which provide both a germicidal effect and a good blooming effect. The “blooming” observed may be described as the change of the water's appearance from essentially colorless and transparent to that of a milky white or milky yellowish white, cloudy appearance. This effect is also sometimes referred to as the “break”. Such blooming is a highly desirable in blooming type cleaning compositions as consumer/end user expectations associate cleaning effectiveness with the extent and degree of this blooming upon formation of a cleaning composition. Such blooming is particularly desirable in compositions where the blooming characteristic in an aqueous dilution is long lasting.
Accordingly it is an object of the invention to provide an aqueous concentrated liquid disinfectant composition which blooms when added to a larger volume of water which comprises the following constituents:
an antiseptic agent which imparts a germicidal characteristic to the composition,
other than a quaternary ammonium compound having germicidal properties;
organic solvent constituent;
binary co-solvent system comprising alkyl biphenyl solvent and a co-solvent;
optionally but desirably at least one optional constituent selected from chelating agents, coloring agents, light stabilizers, fragrances, thickening agents, hydrotropes, pH adjusting agents, pH buffers as well as one or more detersive surfactant constituents particularly non-ionic and amphoteric surfactants, as well as others known the art and useful in similar compositions. The one or more optional constituents are selected to be present, and are included in amounts which do not undesirably affect the overall blooming characteristics of the present inventive compositions.
In preferred embodiments the concentrate compositions provide excellent initial blooming characteristics in ‘as mixed’ dilutions with water, but also exhibit good retention of blooming characteristics over a longer time period, viz., days and weeks.
It is a further object of the invention to provide such a concentrated liquid disinfectant composition wherein the composition exhibits a blooming effect when diluted in a larger volume of water.
It is a yet further object of the invention to provide such a concentrated liquid disinfectant composition wherein the composition exhibits a germicidal effect in both its concentrated form, and in an aqueous diluted form.
It is a still further object of the invention to provide such a concentrated liquid disinfectant composition which in a diluted form provides disinfection of surfaces wherein the presence of gram positive type pathogenic bacteria such as
Staphylococcus aureus
, and/or the presence of gram negative type pathogenic bacteria such as
Escherichia coli
and/or
Pseudomonas aeruginosa
is suspected.
It is a still further object of the invention to provide working solutions formed from concentrated liquid disinfectant compositions which exhibit a blooming effect when diluted in a larger volume of water, particularly where the dilutions retain their blooming characteristic over an extended period, i.e., several days, and even several weeks.
It is among the further object of the invention to provide such a concentrated liquid disinfectant composition wherein the composition exhibits good long term stability, i.e., shelf stability in its concentrated form.
The concentrate compositions according to the invention include as a necessary constituent at least one antiseptic constituent, other than a quaternary ammonium compound, which antiseptic constituent provides an antibacterial or sanitizing function.
The antiseptic employed in the instant composition can be any of the known antiseptic agents which are soluble to the extent of at least about 0.5 percent w/v in water at ambient temperature, particularly those conventionally included in surgical scrub solutions. Such antiseptic agents include, for example, chloramine, iodine, iodophors such as polyvinyl pyrrolidoneiodine, and chlorhexidine and salts thereof. Suitable salts of chlorhexidine which are soluble in water at ambient temperature to the extent of at least 0.5 percent w/v are, for example, the gluconate, isethionate (2-hydroxyethanesulphonate), formate, acetate, glutamate, succinamate, monodiglycollate, dimethanesulfonate, lactate, di-isobutyrate and glucoheptonate, and of these, the gluconate is particularly preferred. Antiseptics based on phenols such as orthophenyl phenol, orthobenzylparachlorophenol, and the like may also be used. Other antiseptics include parachloro meta xylenol, hexachlorophene, 2-bromo-2-nitropropane diol, salicylanilide, 3,3′,4′,5-tetrachlorosalicylanilide, 3′,4′,5-trichlorosalicylanilide, 3,5-dibromo-3′-trifluoromethyylsalicylanilide, and 3,4,4′-trichlorocarbamilide. One particularly preferred antiseptic is 2,4,4′-trichloro-2′-hydroxydiphenyl ether, which is also generally referred to as TRICLOSAN, a compound which is well known to the art. A further particularly preferred antiseptics are those based on phenols especially orthobenzylparachlorophenol.
The antiseptic above may be present in any germicidally effective concentration. Particularly, the antiseptic may be present in the concentrate compositions in amounts of from about 0.001% by weight to up to about 15% by weight, preferably about 0.01-5% by weight, most preferably in amount of between about 0.5-6% by weight.
A further constituent according to the invention is an organic solvent which is which may also improve the miscibility of further constituents according to the present invention, including any water insoluble or poorly soluble constituents. Many useful organic solvents may be used, as long as it does not undesirably disrupt the favorable characteristics of the invention, especially the blooming characteristic. Mixtures of two or more organic solvents may also be used as the organic solvent constituent.
Useful organic solvents are those which are at least partially water-miscible such as alcohols, water-miscible ethers (e.g. diethylene glycol diethylether, diethylene glycol dimethylether, propylene glycol dimethylether), water-miscible glycol ether (e.g. propylene glycol monomethylether, propylene glycol mono ethylether, propylene glycol monopropylether, propylene glycol monobutylether, ethylene glycol monobutylether, dipropylene glycol monomethylether, diethyleneglycol monobutylether), lower esters of monoalkylethers of ethyleneglycol or propylene glycol (e.g. propylene glycol monomethyl ether acetate) all commercially available from Union Carbide, Dow Chemicals or Hoescht. Mi
Cheung Tak Wai
Smialowicz Dennis Thomas
Fish & Richardson P.C.
Reckitt Benckiser , Inc.
Soubra Imad
Warden, Sr. Robert J.
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