CA2150914C - Self-thickened acidic cleaning composition - Google Patents
Self-thickened acidic cleaning compositionInfo
- Publication number
- CA2150914C CA2150914C CA002150914A CA2150914A CA2150914C CA 2150914 C CA2150914 C CA 2150914C CA 002150914 A CA002150914 A CA 002150914A CA 2150914 A CA2150914 A CA 2150914A CA 2150914 C CA2150914 C CA 2150914C
- Authority
- CA
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- Prior art keywords
- acid
- composition
- composition according
- compositions
- weight
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2075—Carboxylic acids-salts thereof
- C11D3/2082—Polycarboxylic acids-salts thereof
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/835—Mixtures of non-ionic with cationic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D17/00—Detergent materials or soaps characterised by their shape or physical properties
- C11D17/0008—Detergent materials or soaps characterised by their shape or physical properties aqueous liquid non soap compositions
- C11D17/003—Colloidal solutions, e.g. gels; Thixotropic solutions or pastes
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/38—Cationic compounds
- C11D1/62—Quaternary ammonium compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Emergency Medicine (AREA)
- Dispersion Chemistry (AREA)
- Detergent Compositions (AREA)
Abstract
Acidic cleaning compositions are disclosed which are self thickened. The thickening system comprises a mixture of a cationic surfactant and a nonionic surfactant. The compositions are specially suitable for the removal of limescale.
Description
_2~~o9m SELF-THICKENED ACIDIC CLEANING COMPOSITIaN
Technical field The present invention relates to cleaning compositions for hard surfaces. The compositions of the present invention are designed for optimum performance in removing limescale and are thickened without the use of a thickener compound.
Backaround of the invention Compositions for cleaning hard surfaces, including compositions for removing limescale, are well known in the art. Such compositions, which are characterized mainly by a strong acidity, are disclosed for instance in EP 496 188.
Limescale is mainly found in such places as sinks, toilet bowls and bathtubs, i.e, vertical surfaces. Therefore, it is desirable to give some viscosity to compositions for removing limescale so as to prevent said compositions from running down said vertical surfaces. Indeed thick compositions cling to vertical surfaces, thus they have more time to act on vertical surfaces before they run down said surfaces. It is however undesirable to use thickener compounds in such compositions for various reasons. For s instance, thickener compounds may significantly raise formula costs. Also, thickeners may create issues relating to processing and product stability, especially in extreme acidic conditions. Furthermore, thickeners may affect the limescale removing performance of the composition. Finally, thickeners do not contribute to the cleaning performance of the composition.
It is therefore desirable to provide limescale removing compositions in the form of self-thickened systems.
Self-thickened systems have been disclosed for instance in co-pending CA 2,110,4l3, published June 8, l992. In these systems, the thickening effect is obtained by the combination of an anionic surfactant, a nonionic surfactant and an electrolyte. It has however been found that such systems are not optimum for limescale removing compositions. Indeed, this approach does not seem to provide viscosity in a strongly acidic system unless very high levels of ingredients are used, and strong negatives have been observed on limescale removal.
Furthermore, the stability of anionic surfactants may be problematic in such strongly acidic conditions.
It has now been found that a stable self-thickened effect could be obtained in an acidic medium, without compromising on the limescale removing efficiency of the composition by combining a quaternary ammonium salt surfactant with a nonionic surfactant. This solution has the additional advantage that the thickening system also fulfills a detergent function.
Additionally it has been found that the compositions according to the present invention have the advantage that the use of the quaternary ammonium salts cationic surfactants described hereinafter in combination with an acid provides significant disinfectancy benefits. This f ,, advantage is particularly useful in a composition which is meant to be used primarily on bathroom and kitchen~surfaces.
GB 2 071 688 teaches that quaternary ammonium salts can be used to thicken an acidic solution, provided they are combined with an amine or amine oxide. In the ' 688 patent, nonionic surfactants are presented as an alternative to the quaternary ammonium salts.
EP 188 205 teaches that quaternary ammonium salts can be used to thicken an acidic solution, provided they are combined.with a strong mineral acid.
Summary of the invention The compositions according to the present invention are aqueous compositions comprising an acid whereby the pH of said compositions is from 0.1 to 4.5, said compositions further comprising a thickening system whereby said compositions are stable and have a viscosity of from 10 to 700 cps at 60 rpm shear rate at 20~C, characterized in that said thickening system comprises from 0.5o to 8o by weight of the total composition of a mixture of a nonionic surfactant with a cationic surfactant according to the formula R1R2R3R4N+ X-, wherein X is a counteranion, Rl is a Clz-zo hydrocarbon chain and Rz, R3 and R4 are independently selected from the group consisting of H or C1_q hydrocarbon chains, the weight ratio of said cationic sufactant to said nonionic surfactant being from 1.235:1 to 5.25:l.
Detailed description of the invention The compositions of the present invention are designed for removing limescale or soils comprising limescale as a main component. Thus they comprise, as a first essential ingredient, an organic or inorganic acid, or mixtures '_... . ._ ~g~~+*
' 4 thereof. Appropriate acids for use herein are disclosed for instance in EP 41l 708, EP 496 188, GB 2 106 927, EP 200 776, and EP 336 878. Although a wide variety of acids are suitable for use herein from a pure performance viewpoint, it is preferred to avoid the use of strong inorganic acids such as phosphoric acid or HCl, for environmental reasons and for surface safety. Preferred for use herein are organic acids or mixtures thereof. Particularly preferred for use herein are weak organic acids, and particularly preferred is malefic acid which is particularly appealing from both in terms of environmental compatibility and performance. The compositions according to the present invention comprise from O.lo to 450 by weight of the total composition of an acid or mixtures thereof, preferably from 4 o to 25 0 . Thus, the compositions according to the present have a pH as is of from 0.1 to 4.5, preferably 0.5 to 2.0, most preferably about 1Ø
As the second essential ingredient, the compositions according to the present invention comprise a thickening system which consists of a mixture of certain cationic surfactants with nonionic surfactants. In a highly preferred embodiment, the compositions according to the present invention are free of a thickener compound, i.e. a compound which has the sole purpose of thickening the composition.
The suitable cationic surfactants for use herein are according to the formula R1R2R3R4N+ X-, wherein X is a counteranion, Rl is a Clz-zo hydrocarbon chain and Rz, R3 and Rs are independently selected from H or C1_4 hydrocarbon chains. In a preferred embodiment of the invention, R1 is a C14-l~ hydrocarbon chain, most preferably C16 or C18, and Rz, R3 and Ra are all three methyl, and X is halogen, preferably bromide or chloride, most preferably bromide. It is also possible to use WO 94I13769 _ ~' 1 ~ 0 9 ~ 4 ~T~1S93/11680 mixtures of such cationic surfactants without -departing from the spirit of the present invention.
Suitable nonionic surfactants for use herein include compounds having the general formula RA(CH2CH2CH20)m(CH2CH20)nH, wherein R represents a hydrophobic moiety, A represents a group carrying a reactive hydrogen atom, m represents the average number of propylene oxide moieties and n represents the average number of ethylene oxide moieties. These compounds are typically obtained by condensing ethylene oxii~e and/or propylene oxide with a hydrocarbon having a reactive hydrogen, e.g. a hydroxyl, carboxyl, or amido group, in the presence of an acidic or basic catalyst. In the present invention, the hydrophobic moiety of the nonionic compound can be a primary or secondary, straight or branched alcohol having from about 8 to about 24 carbon atoms, preferably 12 to 18, m is 0 and n varies from 1 to 15. Suc~1 suitable surfactants for use herein are commercially available, for instance from Shell under the trade name Dobanol~, or from BASF under the trade name Lutensol~. It is of course possible to use mixtures of different nonionic surfactants without departing from the spirit of the present invention.
The compositions according to the present ' invention comprise from 0.5% to 15% by weight of the total composition of said thickening system, preferably from 1%
to 8%. The compositions according to the present invention consequently have a viscosity in the range of from 10 cps to 7o0 cps at 60 RPM at 20~c, preferably from 20-cps to 200 cps, most preferably 30 cps to 60 cps.
The selection of the most appropriate thickening system depends on such factors as the target viscosity, the acid concentration and the limescale removal performance target.
In mere terms of viscosity, it has been found that using straight alkyl chains in both the cationic and the nonionic 215p914 surfactants provides the best viscosity build up. In the system according to the present invention the combination of the cationic surfactant with the nonionic surfactant allows to build viscosity in an aqueous solution of an acid, even a weak organic acid, whereby this system is stable and the limescale removal performance of said viscosified solution is substantially preserved.
An appropriate way to proceed in determining a suitable thickening system for a given composition is to start by defining the desired limescale removing performance for said composition, i.e. the type and concentration of acid, and to prepare a corresponding aqueous solution of said acid. Then various combinations of cationic and nonionic surfactants can be tried in order to obtain the target viscosity as a stable composition. By stable, it is meant herein that the composition undergoes no phase separation during a substantial period of time in a temperature range of from 0~c to 50~c. The most appropriate system can thus be selected by trial and error.
The compositions according to the present invention may further comprise such optional ingredients as solvents, bleaches, bactericides, perfumes, dyes and the like, provided they are compatible in the acidic medium of the compositions according to the present invention.
The compositions according to the present invention are further illustrated by the following examples.
WO 94I13769 ~ ~ ~ ~ PCT/US93/11680 Examples The following compositions are prepared by mixing the listed ingredients in the listed proportions.
I II III IV V
CTAB 3.2 4.2 - - -Cetrimide - - 4.2 - -STAB - - - 4.2 1.0 Malefic acid 8.0 8.6 8.6 8.6 8.0 Dobanol 23-3~ 1.6 2.9 2.1 0.8 0.5 pH as is 1.0 0.9 0.9 0.9 0.9 Viscosity (cps at 60rpm) 47 29 70 270 20 VI VII VIII IX
CTAB 3.0 4.2 4.2 5.0 Malefic acid 10.0 12.6 4.2 10.0 Dobanol 23-3~ 1.6 3.4 1.3 1.6 Lutensol ON 30~ ~ 0.4 - - 0.4 pH as is 0.9 0.8 1.1 1.0 Viscosity (cps at 60rpm) 30 54 200 41 In the above examples:
CTAB stands for a C16 trimethyl ammonium bromide; Cetrimide stands for C14 trimethyl ammonium bromide; STAB stands for C18 trimethyl ammonium bromide; Dobanol~ 23-3 is a C12-C13 ethoxylated alcohol with an average degree of ethoxylation of 3, available from Shell; Lutensol~ ON 30 is a C8-C12 ethoxylated alcohol with an average degree of ethoxylation of 3.
r . A11 the compositions according to the examples above were stable during 10 days at 50~c.
Technical field The present invention relates to cleaning compositions for hard surfaces. The compositions of the present invention are designed for optimum performance in removing limescale and are thickened without the use of a thickener compound.
Backaround of the invention Compositions for cleaning hard surfaces, including compositions for removing limescale, are well known in the art. Such compositions, which are characterized mainly by a strong acidity, are disclosed for instance in EP 496 188.
Limescale is mainly found in such places as sinks, toilet bowls and bathtubs, i.e, vertical surfaces. Therefore, it is desirable to give some viscosity to compositions for removing limescale so as to prevent said compositions from running down said vertical surfaces. Indeed thick compositions cling to vertical surfaces, thus they have more time to act on vertical surfaces before they run down said surfaces. It is however undesirable to use thickener compounds in such compositions for various reasons. For s instance, thickener compounds may significantly raise formula costs. Also, thickeners may create issues relating to processing and product stability, especially in extreme acidic conditions. Furthermore, thickeners may affect the limescale removing performance of the composition. Finally, thickeners do not contribute to the cleaning performance of the composition.
It is therefore desirable to provide limescale removing compositions in the form of self-thickened systems.
Self-thickened systems have been disclosed for instance in co-pending CA 2,110,4l3, published June 8, l992. In these systems, the thickening effect is obtained by the combination of an anionic surfactant, a nonionic surfactant and an electrolyte. It has however been found that such systems are not optimum for limescale removing compositions. Indeed, this approach does not seem to provide viscosity in a strongly acidic system unless very high levels of ingredients are used, and strong negatives have been observed on limescale removal.
Furthermore, the stability of anionic surfactants may be problematic in such strongly acidic conditions.
It has now been found that a stable self-thickened effect could be obtained in an acidic medium, without compromising on the limescale removing efficiency of the composition by combining a quaternary ammonium salt surfactant with a nonionic surfactant. This solution has the additional advantage that the thickening system also fulfills a detergent function.
Additionally it has been found that the compositions according to the present invention have the advantage that the use of the quaternary ammonium salts cationic surfactants described hereinafter in combination with an acid provides significant disinfectancy benefits. This f ,, advantage is particularly useful in a composition which is meant to be used primarily on bathroom and kitchen~surfaces.
GB 2 071 688 teaches that quaternary ammonium salts can be used to thicken an acidic solution, provided they are combined with an amine or amine oxide. In the ' 688 patent, nonionic surfactants are presented as an alternative to the quaternary ammonium salts.
EP 188 205 teaches that quaternary ammonium salts can be used to thicken an acidic solution, provided they are combined.with a strong mineral acid.
Summary of the invention The compositions according to the present invention are aqueous compositions comprising an acid whereby the pH of said compositions is from 0.1 to 4.5, said compositions further comprising a thickening system whereby said compositions are stable and have a viscosity of from 10 to 700 cps at 60 rpm shear rate at 20~C, characterized in that said thickening system comprises from 0.5o to 8o by weight of the total composition of a mixture of a nonionic surfactant with a cationic surfactant according to the formula R1R2R3R4N+ X-, wherein X is a counteranion, Rl is a Clz-zo hydrocarbon chain and Rz, R3 and R4 are independently selected from the group consisting of H or C1_q hydrocarbon chains, the weight ratio of said cationic sufactant to said nonionic surfactant being from 1.235:1 to 5.25:l.
Detailed description of the invention The compositions of the present invention are designed for removing limescale or soils comprising limescale as a main component. Thus they comprise, as a first essential ingredient, an organic or inorganic acid, or mixtures '_... . ._ ~g~~+*
' 4 thereof. Appropriate acids for use herein are disclosed for instance in EP 41l 708, EP 496 188, GB 2 106 927, EP 200 776, and EP 336 878. Although a wide variety of acids are suitable for use herein from a pure performance viewpoint, it is preferred to avoid the use of strong inorganic acids such as phosphoric acid or HCl, for environmental reasons and for surface safety. Preferred for use herein are organic acids or mixtures thereof. Particularly preferred for use herein are weak organic acids, and particularly preferred is malefic acid which is particularly appealing from both in terms of environmental compatibility and performance. The compositions according to the present invention comprise from O.lo to 450 by weight of the total composition of an acid or mixtures thereof, preferably from 4 o to 25 0 . Thus, the compositions according to the present have a pH as is of from 0.1 to 4.5, preferably 0.5 to 2.0, most preferably about 1Ø
As the second essential ingredient, the compositions according to the present invention comprise a thickening system which consists of a mixture of certain cationic surfactants with nonionic surfactants. In a highly preferred embodiment, the compositions according to the present invention are free of a thickener compound, i.e. a compound which has the sole purpose of thickening the composition.
The suitable cationic surfactants for use herein are according to the formula R1R2R3R4N+ X-, wherein X is a counteranion, Rl is a Clz-zo hydrocarbon chain and Rz, R3 and Rs are independently selected from H or C1_4 hydrocarbon chains. In a preferred embodiment of the invention, R1 is a C14-l~ hydrocarbon chain, most preferably C16 or C18, and Rz, R3 and Ra are all three methyl, and X is halogen, preferably bromide or chloride, most preferably bromide. It is also possible to use WO 94I13769 _ ~' 1 ~ 0 9 ~ 4 ~T~1S93/11680 mixtures of such cationic surfactants without -departing from the spirit of the present invention.
Suitable nonionic surfactants for use herein include compounds having the general formula RA(CH2CH2CH20)m(CH2CH20)nH, wherein R represents a hydrophobic moiety, A represents a group carrying a reactive hydrogen atom, m represents the average number of propylene oxide moieties and n represents the average number of ethylene oxide moieties. These compounds are typically obtained by condensing ethylene oxii~e and/or propylene oxide with a hydrocarbon having a reactive hydrogen, e.g. a hydroxyl, carboxyl, or amido group, in the presence of an acidic or basic catalyst. In the present invention, the hydrophobic moiety of the nonionic compound can be a primary or secondary, straight or branched alcohol having from about 8 to about 24 carbon atoms, preferably 12 to 18, m is 0 and n varies from 1 to 15. Suc~1 suitable surfactants for use herein are commercially available, for instance from Shell under the trade name Dobanol~, or from BASF under the trade name Lutensol~. It is of course possible to use mixtures of different nonionic surfactants without departing from the spirit of the present invention.
The compositions according to the present ' invention comprise from 0.5% to 15% by weight of the total composition of said thickening system, preferably from 1%
to 8%. The compositions according to the present invention consequently have a viscosity in the range of from 10 cps to 7o0 cps at 60 RPM at 20~c, preferably from 20-cps to 200 cps, most preferably 30 cps to 60 cps.
The selection of the most appropriate thickening system depends on such factors as the target viscosity, the acid concentration and the limescale removal performance target.
In mere terms of viscosity, it has been found that using straight alkyl chains in both the cationic and the nonionic 215p914 surfactants provides the best viscosity build up. In the system according to the present invention the combination of the cationic surfactant with the nonionic surfactant allows to build viscosity in an aqueous solution of an acid, even a weak organic acid, whereby this system is stable and the limescale removal performance of said viscosified solution is substantially preserved.
An appropriate way to proceed in determining a suitable thickening system for a given composition is to start by defining the desired limescale removing performance for said composition, i.e. the type and concentration of acid, and to prepare a corresponding aqueous solution of said acid. Then various combinations of cationic and nonionic surfactants can be tried in order to obtain the target viscosity as a stable composition. By stable, it is meant herein that the composition undergoes no phase separation during a substantial period of time in a temperature range of from 0~c to 50~c. The most appropriate system can thus be selected by trial and error.
The compositions according to the present invention may further comprise such optional ingredients as solvents, bleaches, bactericides, perfumes, dyes and the like, provided they are compatible in the acidic medium of the compositions according to the present invention.
The compositions according to the present invention are further illustrated by the following examples.
WO 94I13769 ~ ~ ~ ~ PCT/US93/11680 Examples The following compositions are prepared by mixing the listed ingredients in the listed proportions.
I II III IV V
CTAB 3.2 4.2 - - -Cetrimide - - 4.2 - -STAB - - - 4.2 1.0 Malefic acid 8.0 8.6 8.6 8.6 8.0 Dobanol 23-3~ 1.6 2.9 2.1 0.8 0.5 pH as is 1.0 0.9 0.9 0.9 0.9 Viscosity (cps at 60rpm) 47 29 70 270 20 VI VII VIII IX
CTAB 3.0 4.2 4.2 5.0 Malefic acid 10.0 12.6 4.2 10.0 Dobanol 23-3~ 1.6 3.4 1.3 1.6 Lutensol ON 30~ ~ 0.4 - - 0.4 pH as is 0.9 0.8 1.1 1.0 Viscosity (cps at 60rpm) 30 54 200 41 In the above examples:
CTAB stands for a C16 trimethyl ammonium bromide; Cetrimide stands for C14 trimethyl ammonium bromide; STAB stands for C18 trimethyl ammonium bromide; Dobanol~ 23-3 is a C12-C13 ethoxylated alcohol with an average degree of ethoxylation of 3, available from Shell; Lutensol~ ON 30 is a C8-C12 ethoxylated alcohol with an average degree of ethoxylation of 3.
r . A11 the compositions according to the examples above were stable during 10 days at 50~c.
Claims (10)
1. An aqueous composition comprising an acid whereby the pH
of said composition is from 0.1 to 4.5, said composition further comprising a thickening system whereby said composition is stable and has a viscosity of from 10 to 700 cps at 60 rpm shear rate at 20~C, characterized in that said thickening system comprises from 0.5% to 8% by weight of the total composition of a mixture of a nonionic surfactant with a cationic surfactant according to the formula R1R2R3R4N+ X-, wherein X is a counterion, R1 is a C12-20 hydrocarbon chain and R2, R3, and R4 are independently selected from the group consisting of H
and C1-4 hydrocarbon chains, the weight ratio of said cationic surfactant to said nonionic surfactant being from 1.235:1 to 5.25:1.
of said composition is from 0.1 to 4.5, said composition further comprising a thickening system whereby said composition is stable and has a viscosity of from 10 to 700 cps at 60 rpm shear rate at 20~C, characterized in that said thickening system comprises from 0.5% to 8% by weight of the total composition of a mixture of a nonionic surfactant with a cationic surfactant according to the formula R1R2R3R4N+ X-, wherein X is a counterion, R1 is a C12-20 hydrocarbon chain and R2, R3, and R4 are independently selected from the group consisting of H
and C1-4 hydrocarbon chains, the weight ratio of said cationic surfactant to said nonionic surfactant being from 1.235:1 to 5.25:1.
2. A composition according to claim 1 which comprises from 1% to 8% of said mixture of said nonionic and said cationic surfactant.
3. A composition according to claim 1, wherein said acid is an organic acid.
4. A composition according to claim 3, wherein said acid is malefic acid.
5. A composition according to claim 1 which comprises from 0.1% to 45% by weight of the total composition of said acid.
6. A composition according to claim 5 which comprises from about 4% by weight to about 25% by weight of said acid.
7. A composition according to claim 1 wherein said nonionic surfactant is an ethoxylated alcohol having from about 8 to about 24 carbon atoms, and an average degree of ethoxylation of from 1 to 15.
8. A composition according to claim 7 wherein said ethoxylated alcohol has from about 12 to about 18 carbon atoms.
9. A composition according to claim 1 wherein in said cationic surfactant R1 is a C14-18 hydrocarbon chain and R2, R3 and R4 are all three methyl, and X is bromide or chloride.
10. A composition according to claim 9 wherein said cationic surfactant R1 is a C16 or C18 hydrocarbon chain.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP92870195.2 | 1992-12-04 | ||
| EP92870195 | 1992-12-04 | ||
| EP93870120A EP0601990B1 (en) | 1992-12-04 | 1993-06-25 | Self-thickened acidic cleaning composition |
| EP93870120.8 | 1993-06-25 | ||
| PCT/US1993/011680 WO1994013769A1 (en) | 1992-12-04 | 1993-12-02 | Self-thickneded acidic cleaning composition |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2150914A1 CA2150914A1 (en) | 1994-06-23 |
| CA2150914C true CA2150914C (en) | 1999-07-13 |
Family
ID=26132648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002150914A Expired - Fee Related CA2150914C (en) | 1992-12-04 | 1993-12-02 | Self-thickened acidic cleaning composition |
Country Status (3)
| Country | Link |
|---|---|
| CA (1) | CA2150914C (en) |
| MX (1) | MX9307695A (en) |
| WO (1) | WO1994013769A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5672578A (en) * | 1994-02-03 | 1997-09-30 | The Procter & Gamble Company | Limescale removing compositions |
| DE69426259T2 (en) * | 1994-02-03 | 2001-06-07 | The Procter & Gamble Company, Cincinnati | Acidic cleaning compositions |
| PT666303E (en) * | 1994-02-03 | 2001-08-30 | Procter & Gamble | COMPOSITIONS FOR REMOVAL OF CALCARY SCREW |
| EP0839898A1 (en) | 1996-11-04 | 1998-05-06 | The Procter & Gamble Company | Self-thickened cleaning compositions |
| GB2329901A (en) | 1997-09-30 | 1999-04-07 | Reckitt & Colman Inc | Acidic hard surface cleaning and disinfecting compositions |
| GB2348885A (en) * | 1999-04-16 | 2000-10-18 | Reckitt & Colman Inc | Hard surface cleaning and disinfecting composition |
| EP1894989A1 (en) * | 2006-09-01 | 2008-03-05 | The Procter and Gamble Company | Pasty Composition for Sanitary Ware |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB8500116D0 (en) * | 1985-01-03 | 1985-02-13 | Unilever Plc | Liquid bleaching compositions |
| DE3542970A1 (en) * | 1985-12-05 | 1987-06-11 | Benckiser Gmbh Joh A | LIQUID SANITARY CLEANING AND DECALCIFYING AGENTS AND METHOD FOR THE PRODUCTION THEREOF |
| US5008030A (en) * | 1989-01-17 | 1991-04-16 | Colgate-Palmolive Co. | Acidic disinfectant all-purpose liquid cleaning composition |
| GB8909095D0 (en) * | 1989-04-21 | 1989-06-07 | Allied Colloids Ltd | Thickened aqueous compositions |
| ATE129742T1 (en) * | 1991-06-14 | 1995-11-15 | Procter & Gamble | CLEANING AGENT COMPOSITIONS WITH OWN SELF-THICKENING ABILITY. |
-
1993
- 1993-12-02 CA CA002150914A patent/CA2150914C/en not_active Expired - Fee Related
- 1993-12-02 WO PCT/US1993/011680 patent/WO1994013769A1/en active Application Filing
- 1993-12-06 MX MX9307695A patent/MX9307695A/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| WO1994013769A1 (en) | 1994-06-23 |
| MX9307695A (en) | 1994-06-30 |
| CA2150914A1 (en) | 1994-06-23 |
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