Cleaning compositions for solid surfaces – auxiliary compositions – Cleaning compositions or processes of preparing – For cleaning a specific substrate or removing a specific...
Reexamination Certificate
1999-10-05
2001-10-09
Lovering, Richard D. (Department: 1712)
Cleaning compositions for solid surfaces, auxiliary compositions
Cleaning compositions or processes of preparing
For cleaning a specific substrate or removing a specific...
C424S070190, C510S135000, C510S235000, C510S341000, C514S945000, C514S975000, C516S012000
Reexamination Certificate
active
06300296
ABSTRACT:
The subject-matter of the present invention is a foaming aqueous medium which can form foams which remain stable in the presence of grease, the stabilization of the foams, in the presence of grease, of an aqueous medium comprising a base surface-active agent using an amphiphilic additive, and the use of the said aqueous medium which can form foams which remain stable in the presence of grease as liquid detergent composition for washing dishes by hand, as liquid cosmetic composition for the skin or hair, such as shampoos., shower gels or liquid soaps, as composition for the floating of metals, and the like.
Various types of additives have already been provided for stabilizing foams resulting from aqueous media comprising a surface-active agent, in particular in the field of detergency. The following are in particular mentioned in “Additives for foams”, Kuo-Yann Lai and Nagaraj Dixit, Foams theory measurements and applications; edited by Robert K. Prud'homme and Saad A. Khan; Surfactant Science series—volume 57, Marcel Dekker Inc., 1995, chapter 8:
organic compounds, such as
fatty alcohols, such as lauryl alcohol, for improving the stability of aqueous media comprising an anionic surfactant, such as alkyl sulfates or alkylsulfonates, or a nonionic surfactant, such as ethoxylated alcohols;
alkanolamides, such as lauryl monoethanolamide and lauryl isopropanolamide, for improving the stability of aqueous media comprising an anionic surfactant, such as alkylarylsulfonates;
amine oxides, such as N,N-dimethyldodecylamine or N,N-dimethylmyristylamine oxides, for improving the stability of aqueous media comprising an anionic surfactant, such as alkyl ether sulfates or alkylarylsulfonates;
electrolytes, such as disodium hydrogen phosphate, disodium pyrophosphate and pentasodium tripolyphosphate, for improving the stability of aqueous media comprising sodium laurate;
hydrophilic polymers, such as
nonionic water-soluble derivatives of cellulose or of guar gum, for improving the stability of aqueous media comprising an anionic surfactant, such as alkyl sulfates, alkylethersulfonates or alkylsulfonates, a nonionic surfactant, such as ethoxylated alcohols, or an amphoteric surfactant, such as betaines.
However, these various additives exhibit the disadvantage of not always contributing, in the presence of grease, sufficient stability to the foams formed.
The Applicant Company has found a foaming aqueous medium, the foams of which exhibit a particularly improved stability in the presence of grease.
A first subject-matter of the present invention consists of a foaming aqueous medium (FAM) which can form stable foams in the presence of grease (G), the said foaming aqueous medium (FAM) comprising water and at least one base surface-active agent (BSA) which can disperse and/or dissolve the grease (G) in the water and being characterized in that it additionally comprises at least one amphiphilic additive (ADD) compatible with the said base surface-active agent (BSA), the said amphiphilic additive (ADD) exhibiting, at a concentration of 0.1% by weight in water, a surface tension &ggr;
(ADD) water/air
of less than 25 mN/m, preferably of less than 22 mN/m, at 25° C. and exhibiting an affinity for the grease (G) which is less than that of the base surface-active agent (BSA) for the said grease (G).
The term “grease (G)” is understood to mean any liquid and/or solid hydrophobic hydrocarbon-comprising medium exhibiting, for example, a solubility in water of less than 5 g/l, preferably of less than 1 g/l.
This grease (G) can be contributed by the external environment and/or can be a constituent of the foaming aqueous medium (FAM) itself; thus, it can equally well be a hydrophobic stain and a hydrophobic active compound of a detergent or cosmetic formulation, for example. Mention may be made, by way of example of grease (G) of:
aliphatic or aromatic hydrocarbons (alkanes, paraffins, mineral oils, paraffin oils, kerosene, petroleum, fuel oil, perhydrosqualane, squalene, and the like),
alkyl monoglycerides, alkyl diglycerides, triglycerides, such as oils extracted from plants and vegetables (palm oil, coconut oil, cottonseed oil, soybean oil, sunflower oil, olive oil, grape seed oil, sesame oil, groundnut oil, castor oil and the like) or oils of animal origin (tallow, fish oils, and the like), or derivatives of these oils, such as hydrogenated oils or lanolin derivatives,
fatty alcohols, such as cetyl alcohol, stearyl alcohol or oleyl alcohol,
fatty esters, such as isopropyl palmitate, 2-ethylhexyl cocoate, myristyl myristate or esters of lactic acid, of stearic acid, of behennic acid or of isostearic acid,
polyorganosiloxane oils, gums or resins, such as linear or cyclic polydimethylsiloxanes, &agr;,&ohgr;-hydroxylated polydimethylsiloxanes, &agr;,&ohgr;-trimethylsilylated polydimethylsiloxanes, polyalkylmethylsiloxanes, polymethylphenylsiloxanes, polydiphenylsiloxanes, aminated derivatives of silicones, or silicone waxes,
organic stains (sebum, and the like).
Any type of nonionic, anionic, amphoteric, zwitterionic or cationic surface-active agent can constitute the base surface-active agent(s) (BSA).
Mention may be made, among these surface-active agents, of
anionic surface-active agents, such as
alkyl ester sulfonates of formula R—CH(SO
3
M)—COOR′, where R represents a C
8-20
, preferably C
10
-C
16
, alkyl radical, R′ a C
1
-C
6
, preferably C
1
-C
3
, alkyl radical and M an alkali metal (sodium, potassium or lithium) cation, a substituted or unsubstituted ammonium (methyl-, dimethyl-, trimethyl- or tetramethylammonium, dimethylpiperidinium, and the like) cation or a cation derived from an alkanolamine (monoethanolamine, diethanolamine, triethanolamine, and the like);
alkyl sulfates of formula ROSO
3
M, where R represents a C
5
-C
24
, preferably C
10
-C
18
, alkyl or hydroxyalkyl radical, M representing a hydrogen atom or a cation with the same definition as above, and their ethoxylenated (EO) and/or propoxylenated (PO) derivatives exhibiting an average of 0.5 to 30, preferably of 0.5 to 10, EO and/or PO units;
alkylamide sulfates of formula RCONHR′OSO
3
M, where R represents a C
2
-C
22
, preferably C
6
-C
20
, alkyl radical, R′ a C
2
-C
3
alkyl radical, M representing a hydrogen atom or a cation with the same definition as above, and their ethoxylenated (EO) and/or propoxylenated (PO) derivatives exhibiting an average of 0.5 to 60 EO and/or PO units;
salts of C
8
-C
24
, preferably C
14
-C
20
, saturated or unsaturated fatty acids, C
9
-C
20
alkylbenzenesulfonates, primary or secondary C
8
-C
22
alkylsulfonates, alkylglycerol sulfonates, the sulfonated polycarboxylic acids disclosed in GB-A-1,082,179, paraffin sulfonates, N-acyl-N-alkyltaurates, alkyl phosphates, isethionates, alkylsuccinamates, alkylsulfosuccinates, the monoesters or diesters of sulfosuccinates, N-acylsarcosinates, alkylglycoside sulfates or polyethoxycarboxylates the cation being an alkali metal (sodium, potassium or lithium), a substituted or unsubstituted ammonium residue (methyl-, dimethyl-, trimethyl- or tetramethylammonium, dimethylpiperidinium, and the like), or a residue derived from an alkanolamine (monoethanolamine, diethanolamine, triethanolamine, and the like);
sophorolipids, such as those in acid or lactone form, derivatives of 17-hydroxyoctadecenic acid; and the like
nonionic surface-active agents, such as
polyoxyalkylenated (polyethoxyethylenated, polyoxypropylenated or polyoxybutylenated)alkylphenols, the alkyl substituent of which is C
6
-C
12
, comprising from 5 to 25 oxyalkylene units; mention may be made, by way of example, of Triton X-45, X-114, X-100 or X-102, sold by Rohm & Haas Co., or Igepal NP2 to NP17 from Rhô ;ne-Poulenc;
polyoxyalkylenated C
8
-C
22
aliphatic alcohols comprising from 1 to 25 oxyalkylene (oxyethylene or oxypropylene) units; mention may be made, by way of example, of Tergitol 15-S-9 or Tergitol 24-L-6 NMW, sold by Union Carbide Corp., Neodol 45-9, Neodol 23-65, Neodol 45-7 or Neodol 45-4, sold by Shell Chemical Co., Kyro EOB, sold by The Procter & Gamble C
Bergeron Vance
Guerin Gilles
Burns Doane Swecker & Mathis L.L.P.
Lovering Richard D.
Rhodia Chimie
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