WO1994004643A1 - Rinse cycle fabric softener - Google Patents
Rinse cycle fabric softener Download PDFInfo
- Publication number
- WO1994004643A1 WO1994004643A1 PCT/US1993/007607 US9307607W WO9404643A1 WO 1994004643 A1 WO1994004643 A1 WO 1994004643A1 US 9307607 W US9307607 W US 9307607W WO 9404643 A1 WO9404643 A1 WO 9404643A1
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- WIPO (PCT)
- Prior art keywords
- acid
- weight
- conditioning composition
- fabric
- fabric conditioning
- Prior art date
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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
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/042—Acids
-
- 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
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/0005—Other compounding ingredients characterised by their effect
- C11D3/001—Softening compositions
-
- 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
- C11D3/2079—Monocarboxylic 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
- 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
- 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
- C11D3/2086—Hydroxy carboxylic acids-salts thereof
Definitions
- This invention relates to fabric softening compositions which are suitable for softening in the rinse cycle of an automatic household washing machine, and which are especially adapted for use under European laundering conditions. More particularly, the present invention relates to fabric conditioning compositions comprising a diesterified quaternary ammonium salt in combination with an acid and optionally a fatty alcohol, which compositions are characterized by superior environmental compatibility relative to conventional quaternary ammonium fabric softening compositions concomitant with providing improved calcium salt solubilization and reduction of encrustation on treated fabrics.
- Esterified quaternary ammonium salts are known in the art as fabric softeners, and are generally recommended for use in combination with fatty alcohols or linear alkyoxylated alcohols.
- U.S. Patent 4,844,823 to Jacques et al describes a diesterified long chain fatty acid di lower-alkyl quaternary ammonium salt as a preferred class of cationic fabric softeners for use in conjunction with a fatty alcohol having from 10 to 24 carbon atoms.
- EP-A-309,052 there is disclosed a liquid softening composition containing a monoester or diester quaternary ammonium compound in combination with an alkyoxylated alcohol which is said to reduce the ester hydrolysis rate of the quaternized softening compound, thereby improving its chemical stability.
- the combination of organic acid with cationic fabric softener is also disclosed in the prior art.
- U.S. Patent 3,904,359 and 3,954,630 to Ramachandran disclose a fabric treating composition comprising a complexing acid such as citric or maleic acid in combination with a quaternary ammonium softening compound.
- U.S. Patent 4,162,984 describes a mixture of a quaternary ammonium salt and an aromatic carboxylic acid such as benzoic acid to provide an emulsion having significantly increased viscosity.
- U.S. Patent 4,426,299 discloses a fabric softening composition comprising ⁇ defined quaternary ammonium compound and a viscosity control agent which may be a C 9 -C 24 fatty acid.
- Patent 4,559,151 there is disclosed the combination of quaternary ammonium salts with a lactic acid salt for the purpose of imparting improved antistatic properties.
- U.S. Patent 4,832,856 discloses mixtures of carboxylic acids with defined amines and/or quaternary ammonium compounds, the resulting mixture being said to provide softening using inexpensive raw materials.
- EP 404,471 relates to an isotropic liquid fabric softener comprising at least 20% of a fabric softening material and at least 5% of an organic acid, the isotropic compositions being said to be more stable than lamellar structures.
- DE 3,312,328 (Benkiser) similarly describes a composition containing a fabric softener material and an organic acid. The addition of acid serves to complex alkaline earth and heavy metal ions.
- the present invention provides environmentally compatible and biodegradable rinse cycle fabric conditioning compositions capable of providing improved softening with significant reduction and solubilization of unwanted mineral encrustations on fabrics to be softened, such encrustations having been generally deposited on the fabrics during the course of prior laundering in water having a high mineral content, which comprises:
- RCO represents the residue of a fatty acid having from about 12 to 24 carbon atoms
- R 2 and R 3 represent independently a lower alkyl group or a hydroxyalkyl group having 1 to 4 carbon atoms; n and m are integers from 1 to 4 and X is a water-solubilizing anion; and
- the fabric softening composition further contains from about 0.2 to about 5%, by weight, preferably from about 0.5 to about 3%, and most preferably from about 0.5 to 1%, by weight, of a fatty alcohol having from about 10 to about 24 carbon atoms.
- the cationic fabric softener is a triethanolamine diester which comprises N-methyl, N, N-di (beta C ⁇ 4 -C ⁇ 8 acyloxy- ethyl), N-beta hydroxy ethyl ammonium, and the anion is halide, methylsulfate or ethylsulfate.
- the invention also encompasses a method for softening fabrics and removing unwanted mineral encrustations therefrom comprising rinsing the fabrics to be treated in an aqueous bath containing an effective amount of a composition comprised of the above-defined fabric softening composition.
- the present invention is predicated on the discovery that the combination of cationic fabric softener as defined above with an organic or mineral acid provides a biodegradable softener which has the capability of removing mineral encrustations such as calcium and magnesium salts, and in particular, phosphates and carbonates of calcium and magnesium, which cumulatively deposit on the fabrics during the course of prior laundering in hard water, i.e. water having a mineral content above about 300 ppm, conditions generally associated with European laundering conditions.
- a particularly preferred softening compound as described herein comprises di(stearoyl-oxyethyl-) methyl-hydroxyethyl ammonium, and X is a halide, methosulfate or ethylsulfate.
- compositions of the present invention are environmentally compatible and biodegradable rinse cycle fabric conditioning compositions which contain as the active fabric softening compound a diesterified long chain fatty acid cationic fabric softener as defined above.
- the use of such fabric softening compound avoids the more traditional di-long chain, di-short chain quaternary ammonium softeners which are used extensively in commercial rinse cycle softeners, but which presently have become the focus of increasing legislative concerns, particularly in Europe, because of their lack of biodegradability in aqueous effluent streams.
- a preferred "diesterified quat” in accordance with the invention is commercially available from, for instance, Stepan Chemical Co. under the Stepantex trademark, such as Stepantex VHR90 which has the formula
- R is hydrogenated or non-hydrogenated tallow and X may be chloride or sulfate.
- the total amount of diesterified cationic fabric softener in the total composition is from about 1 to 20%, by weight, preferably from about 2 to 10%, by weight.
- the second essential ingredient of the fabric conditioning composition is the acid which has a dual function, depending on the acid concentration.
- the first function is preventive in nature and occurs when the acid in the diluted rinse cycle solution is present in sufficient amount to react with the insoluble salts of the water hardness ions (calcium and magnesium) to form soluble acid salts and to remove any mineral salts which may have deposited on fabrics during the washing step of the wash cycle.
- the second function is more curative in nature and refers to the removal of mineral encrustations which have been cumulatively deposited during prior washing throughout the fabric's life.
- a dosage of 110 to 150 ml of softening composition is typical for use in the rinse cycle; the water hardness varies from about 200 to 400 ppm, most typically about 300 ppm.
- an acid concentration of from about 5 to about 25%, by weight, preferably from about 8 to 25%, by weight is required in the fabric softening composition.
- the acid used may be an organic or mineral acid.
- the organic acids are preferably saturated or unsaturated C 2 -C 6 carboxylic acids such as citric acid, formic acid, maleic acid, tartaric acid and succinic acid. Citric acid, malonic acid and maleic acid are particularly preferred.
- a mineral acid, such as HCI, may be used advantageously in combination with such organic acid, the amount of acid used in excess of protonation being referred to herein as "excess".
- An optional fabric conditioning ingredient is a fatty alcohol wherein the hydrophobic group may be a straight or branched chain alkyl or alkenyl group having from about 10 to 24, preferably from about 10 to 20, especially preferably from about 12 to 20 carbon atoms.
- the fatty alcohol include decanol, dodecanol, tetradecanol, pentadecanol, hexadecanol, octadecanol, lauryl alcohol, palmityl alcohol, stearyl alcohol, oleyl alcohol, and mixtures thereof.
- the fatty alcohol may be of natural or synthetic origin and my include, for example, mixed alcohol, such as C 16 -C 18 alcohols prepared by Ziegler polymerization of ethylene.
- the fatty alcohol may be present in the composition in a minor amount relative to the cationic fabric softener such that the ratio, by weight, of the cationic fabric softener to fatty alcohol is in the range of from about 6:1 to 2:1 , preferably about 5:1 to 3:1 , and most preferably about 4:1.
- compositions A and B in accordance with the invention were prepared as described below, and compared to the Reference Composition which is in accordance with the prior art.
- a nonionic surfactant comprised of
- each of softening compositions A, B and the Reference Composition were added to the rinse cycle of a European washing machine having 25 liters of water in a dosage of 4.4 grams per liter of water and containing previously encrusted towels containing 24%, by weight, encrustation.
- the softening performance of each composition was evaluated by a three member panel. All three softening compositions were graded by the panel as providing the same softening performance.
- the percent of encrustation solubilization on the encrusted fabrics was measured for all three of the tested compositions.
- the encrustation level was measured by calcination of the encrusted fabrics whereby weight measurements were taken before and after calcination of the fabric in an oven at 800°C for 1 hour. After calcination, the organic materials such as the fibers and detergents are burned in the oven with only the minerals remaining; the latter being primarily calcium phosphate salts, i.e. encrustations.
- the encrustation solubilization refers to the amount of encrustation removed during the rinse cycle treatment relative to the amount of encrustation present originally.
- percent of encrustation solubilization was 2.3%; for the Reference composition, less than 0.1% of encrustation was solubilized.
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Abstract
An environmentally compatible and biodegradable rinse cycle fabric conditioning composition is provided capable of providing improved softening with significant reduction and solubilization of unwanted mineral encrustations on fabrics to be softened. The composition comprises: (a) from about 1 to about 20 %, by weight, of a diesterified long chain fatty acid cationic fabric softener represented by general formula (I), wherein RCO represents the residue of a fatty acid having from about 12 to 24 carbon atoms; R2 and R3 represent independently a lower alkyl group or a hydroxyalkyl group having 1 to 4 carbon atoms; n and m are integers from 1 to 4 and X is a water-solubilizing anion; and (b) from about 1 to about 25 %, by weight, of unreacted organic or mineral acid.
Description
RINSE CYCLE FABRIC SOFTENER
BACKGROUND OF THE INVENTION
This invention relates to fabric softening compositions which are suitable for softening in the rinse cycle of an automatic household washing machine, and which are especially adapted for use under European laundering conditions. More particularly, the present invention relates to fabric conditioning compositions comprising a diesterified quaternary ammonium salt in combination with an acid and optionally a fatty alcohol, which compositions are characterized by superior environmental compatibility relative to conventional quaternary ammonium fabric softening compositions concomitant with providing improved calcium salt solubilization and reduction of encrustation on treated fabrics.
Esterified quaternary ammonium salts are known in the art as fabric softeners, and are generally recommended for use in combination with fatty alcohols or linear alkyoxylated alcohols. U.S. Patent 4,844,823 to Jacques et al describes a diesterified long chain fatty acid di lower-alkyl quaternary ammonium salt as a preferred class of cationic fabric softeners for use in conjunction with a fatty alcohol having from 10 to 24 carbon atoms. In EP-A-309,052 there is disclosed a liquid softening composition containing a monoester or diester quaternary ammonium compound in combination with an alkyoxylated alcohol which is said to reduce the ester hydrolysis rate of the quaternized softening compound, thereby improving its chemical stability. The combination of organic acid with cationic fabric softener is also disclosed in the prior art. U.S. Patent 3,904,359 and 3,954,630 to Ramachandran disclose a fabric treating composition comprising a complexing acid such as citric or maleic acid in combination with a quaternary ammonium softening compound. The function of the acid, as stated in the patent, is to prevent yellowing of fabrics due to build-up of cationic softener and to provide a complexing site for metal ions contained in soils. U.S. Patent 4,162,984 describes a mixture of a quaternary ammonium salt and an aromatic carboxylic acid such as benzoic acid to provide an emulsion having significantly increased viscosity. U.S. Patent 4,426,299 discloses a fabric softening composition comprising ≥ defined quaternary ammonium compound and a viscosity control agent which may be a C9-C24 fatty acid. In U.S. Patent 4,559,151 there is disclosed the combination of quaternary ammonium salts with a lactic acid salt for the purpose of imparting improved antistatic properties. U.S. Patent 4,832,856 discloses mixtures of carboxylic acids with defined amines and/or quaternary ammonium
compounds, the resulting mixture being said to provide softening using inexpensive raw materials. EP 404,471 relates to an isotropic liquid fabric softener comprising at least 20% of a fabric softening material and at least 5% of an organic acid, the isotropic compositions being said to be more stable than lamellar structures. DE 3,312,328 (Benkiser) similarly describes a composition containing a fabric softener material and an organic acid. The addition of acid serves to complex alkaline earth and heavy metal ions.
Although satisfactory results may be obtained with one or more of these prior art fabric softening compositions, further improvements are needed in terms of being able to provide efficacious fabric softening with a biodegradable cationic fabric softening compound, concomitant with the ability to substantially solubilize and remove mineral encrustation from the fabrics to be treated. This is a particularly important need for European fabric conditioning compositions where the cumulative deposition of mineral salts on fabrics during repetitive laundering in hard water is an acute problem. Moreover, the increased emphasis in Europe on using biodegradable softening compounds which have no toxic effect on aquatic organisms in aqueous effluent streams makes it imperative that conventional softening compounds, notably, the di-long chain, di-short chain quaternary ammonium compounds be replaced as the softening compounds of choice in commercial rinse-cycle softening compositions with softening compounds which are significantly more compatible with environmental concerns.
SUMMARY OF THE INVENTION
The present invention provides environmentally compatible and biodegradable rinse cycle fabric conditioning compositions capable of providing improved softening with significant reduction and solubilization of unwanted mineral encrustations on fabrics to be softened, such encrustations having been generally deposited on the fabrics during the course of prior laundering in water having a high mineral content, which comprises:
(a) from about 1 to about 20%, by weight, of a diesterified long chain fatty acid cationic fabric softener represented by the general formula
R2 and R3 represent independently a lower alkyl group or a hydroxyalkyl group having 1 to 4 carbon atoms; n and m are integers from 1 to 4 and X is a water-solubilizing anion; and
(b) from about 1 to about 25%, by weight, of unreacted organic or mineral acid. In a preferred embodiment of the invention, the fabric softening composition further contains from about 0.2 to about 5%, by weight, preferably from about 0.5 to about 3%, and most preferably from about 0.5 to 1%, by weight, of a fatty alcohol having from about 10 to about 24 carbon atoms.
In another preferred embodiment of the invention the cationic fabric softener is a triethanolamine diester which comprises N-methyl, N, N-di (beta Cι4-Cι8 acyloxy- ethyl), N-beta hydroxy ethyl ammonium, and the anion is halide, methylsulfate or ethylsulfate.
The invention also encompasses a method for softening fabrics and removing unwanted mineral encrustations therefrom comprising rinsing the fabrics to be treated in an aqueous bath containing an effective amount of a composition comprised of the above-defined fabric softening composition. The present invention is predicated on the discovery that the combination of cationic fabric softener as defined above with an organic or mineral acid provides a biodegradable softener which has the capability of removing mineral encrustations such as calcium and magnesium salts, and in particular, phosphates and carbonates of calcium and magnesium, which cumulatively deposit on the fabrics during the course of prior laundering in hard water, i.e. water having a mineral content above about 300 ppm, conditions generally associated with European laundering conditions.
A particularly preferred softening compound as described herein comprises di(stearoyl-oxyethyl-) methyl-hydroxyethyl ammonium, and X is a halide, methosulfate or ethylsulfate.
DETAILED DESCRIPTION OF THE INVENTION The compositions of the present invention are environmentally compatible and biodegradable rinse cycle fabric conditioning compositions which contain as the active fabric softening compound a diesterified long chain fatty acid cationic fabric softener as defined above. The use of such fabric softening compound avoids the more traditional di-long chain, di-short chain quaternary ammonium softeners which are used extensively in commercial rinse cycle softeners, but which presently have
become the focus of increasing legislative concerns, particularly in Europe, because of their lack of biodegradability in aqueous effluent streams.
A preferred "diesterified quat" in accordance with the invention is commercially available from, for instance, Stepan Chemical Co. under the Stepantex trademark, such as Stepantex VHR90 which has the formula
CH2CH2OOCR I CHa— N— CH2CH2OOCR
CH2CH2OH
where R is hydrogenated or non-hydrogenated tallow and X may be chloride or sulfate. The total amount of diesterified cationic fabric softener in the total composition is from about 1 to 20%, by weight, preferably from about 2 to 10%, by weight.
The second essential ingredient of the fabric conditioning composition is the acid which has a dual function, depending on the acid concentration. The first function is preventive in nature and occurs when the acid in the diluted rinse cycle solution is present in sufficient amount to react with the insoluble salts of the water hardness ions (calcium and magnesium) to form soluble acid salts and to remove any mineral salts which may have deposited on fabrics during the washing step of the wash cycle. The second function is more curative in nature and refers to the removal of mineral encrustations which have been cumulatively deposited during prior washing throughout the fabric's life.
To effect the aforementioned preventive function, an acid concentration of from about 1 to about 8%, by weight, preferably from about 5 to about 8%, is required in the fabric softening composition depending on the dosage used and the hardness of the water. For European washing machines containing about 20 to 25 liters of water, for example, a dosage of 110 to 150 ml of softening composition is typical for use in the rinse cycle; the water hardness varies from about 200 to 400 ppm, most typically about 300 ppm. To effect the curative function of the acid for removal of previously deposited mineral encrustations, an acid concentration of from about 5 to about 25%, by weight, preferably from about 8 to 25%, by weight, is required in the fabric softening composition.
The acid used may be an organic or mineral acid. The organic acids are preferably saturated or unsaturated C2-C6 carboxylic acids such as citric acid, formic acid, maleic acid, tartaric acid and succinic acid. Citric acid, malonic acid and maleic acid are particularly preferred. A mineral acid, such as HCI, may be used
advantageously in combination with such organic acid, the amount of acid used in excess of protonation being referred to herein as "excess".
An optional fabric conditioning ingredient is a fatty alcohol wherein the hydrophobic group may be a straight or branched chain alkyl or alkenyl group having from about 10 to 24, preferably from about 10 to 20, especially preferably from about 12 to 20 carbon atoms. Specific examples of the fatty alcohol include decanol, dodecanol, tetradecanol, pentadecanol, hexadecanol, octadecanol, lauryl alcohol, palmityl alcohol, stearyl alcohol, oleyl alcohol, and mixtures thereof. Furthermore, the fatty alcohol may be of natural or synthetic origin and my include, for example, mixed alcohol, such as C16-C18 alcohols prepared by Ziegler polymerization of ethylene.
The fatty alcohol may be present in the composition in a minor amount relative to the cationic fabric softener such that the ratio, by weight, of the cationic fabric softener to fatty alcohol is in the range of from about 6:1 to 2:1 , preferably about 5:1 to 3:1 , and most preferably about 4:1.
EXAMPLE 1
Compositions A and B in accordance with the invention were prepared as described below, and compared to the Reference Composition which is in accordance with the prior art.
0) A nonionic surfactant comprised of
C 13-15 alcohol ethoxylate having 20 moles EO/mole alcohol.
Weight %
Each of softening compositions A, B and the Reference Composition were added to the rinse cycle of a European washing machine having 25 liters of water in a dosage of 4.4 grams per liter of water and containing previously encrusted towels containing 24%, by weight, encrustation. The softening performance of each composition was evaluated by a three member panel. All three softening compositions were graded by the panel as providing the same softening performance. The percent of encrustation solubilization on the encrusted fabrics was measured for all three of the tested compositions. The encrustation level was measured by calcination of the encrusted fabrics whereby weight measurements were taken before and after calcination of the fabric in an oven at 800°C for 1 hour. After calcination, the organic materials such as the fibers and detergents are burned in the oven with only the minerals remaining; the latter being primarily calcium phosphate salts, i.e. encrustations.
The encrustation solubilization, expressed as a percentage, refers to the amount of encrustation removed during the rinse cycle treatment relative to the amount of encrustation present originally. For Compositions A and B the percent of encrustation solubilization was 2.3%; for the Reference composition, less than 0.1% of encrustation was solubilized.
Claims
δ CLAIMS
An environmentally compatible and biodegradable rinse cycle fabric conditioning composition capable of providing improved softening with significant reduction and solubilization of unwanted mineral encrustations on fabrics to be softened, such encrustations having been generally deposited on the fabrics during the course of prior laundering in water having a high mineral content, which comprises:
(a) from about 1 to about 20%, by weight, of a diesterified long chain fatty acid cationic fabric softener represented by the general formula
O
II
(CH2)nOCR o II
Ra— N — (CH2) m, OCR
I
R
wherein RCO represents the residue of a fatty acid having from about 12 to 24 carbon atoms;
R2 and R3 represent independently a lower alkyl group or a hydroxyalkyl group having 1 to 4 carbon atoms; n and m are integers from 1 to 4 and X is a water-solubilizing anion; and (b) from about 1 to about 25%, by weight, of unreacted organic or mineral acid. A fabric conditioning composition according to claim 1 wherein said cationic fabric softener is a triethanolamine diester which comprises N-methyl, N, N-di (beta C14-C18 acyloxy-ethyl), N-beta hydroxy ethyl ammonium, and wherein X is a halide, methylsulfate, or ethylsulfate.
A fabric conditioning composition according to claim 1 wherein said cationic fabric softener comprises di (stearoyl-oxyethyl) methyl-hydroxyethyl ammonium and X is a halide, methylsulfate or ethylsulfate.
A fabric conditioning composition according to claim 1 which further includes from about 0.2 to about 5%, by weight, of a fatty alcohol having from about 10 to about 24 carbon atoms.
A fabric conditioning composition according to claim 1 wherein the concentration of acid is from about 8 to 25%, by weight, of the fabric conditioning composition.
6. A fabric conditioning composition according to claim 1 wherein the acid is citric acid.
7. A fabric condition composition according to claim 1 wherein the acid is malonic or maleic acid. 8. A fabric conditioning composition according to claim 4 wherein the fatty alcohol is a C16-C18 alcohol. 9. A method for softening fabrics and removing unwanted mineral encrustation therefrom comprising rinsing the fabrics to be treated in an aqueous bath containing an effective amount of a rinse cycle fabric conditioning composition comprising
(a) from about 1 to about 20%, by weight, of a diesterified long chain fatty acid cationic fabric softener represented by the general formula
wherein RCO represents the residue of a fatty acid having from about 12 to 24 carbon atoms; R2 and R3 represent independently a lower alkyl group or a hydroxyalkyl group having 1 to 4 carbon atoms; n and m are integers from 1 to 4 and X is a water-solubilizing anion; and (b) from about 1 to about 25%, by weight, of unreacted organic or mineral acid. 10. The method of claim 9 wherein said cationic fabric softener comprises N- methyl, N, N-di(beta Cι4C18 acyloxy-ethyl), N-beta hydroxy ethyl ammonium, and wherein X is a halide, methylsulfate, or ethylsulfate. 11. The method of claim 9 wherein the concentration of acid is from about 8 to 25%, by weight, of the fabric conditioning composition. 12. The method of claim 9 wherein the acid is citric acid.
13. The method of claim 9 wherein the acid is malonic acid or maleic acid.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP93920018A EP0656935A1 (en) | 1992-08-21 | 1993-08-17 | Rinse cycle fabric softener |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US93410092A | 1992-08-21 | 1992-08-21 | |
US07/934,100 | 1992-08-21 | ||
US8680993A | 1993-07-02 | 1993-07-02 | |
US08/086,809 | 1993-07-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1994004643A1 true WO1994004643A1 (en) | 1994-03-03 |
Family
ID=26775173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1993/007607 WO1994004643A1 (en) | 1992-08-21 | 1993-08-17 | Rinse cycle fabric softener |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0656935A1 (en) |
WO (1) | WO1994004643A1 (en) |
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996011250A1 (en) * | 1994-10-07 | 1996-04-18 | The Procter & Gamble Company | PARTICULATE FABRIC SOFTENER COMPOSITION CONTAINING BIODEGRADABLE CATIONIC ESTER AND pH MODIFIER |
US5525245A (en) * | 1994-12-21 | 1996-06-11 | Colgate-Palmolive Company | Clear, concentrated liquid fabric softener compositions |
EP0753571A1 (en) * | 1995-07-10 | 1997-01-15 | The Procter & Gamble Company | Process for making granular detergent composition |
US5656585A (en) * | 1994-12-21 | 1997-08-12 | Colgate-Palmolive Company | Clear, concentrated liquid fabric softener compositions |
US5773409A (en) * | 1994-04-07 | 1998-06-30 | Lever Brothers Company, Division Of Conopco, Inc. | Fabric softening composition |
WO1998052907A1 (en) * | 1997-05-19 | 1998-11-26 | The Procter & Gamble Company | Quaternary fatty acid triethanolamine ester salts and their use as fabric softeners |
EP0918086A1 (en) * | 1997-11-24 | 1999-05-26 | The Procter & Gamble Company | Fabric softening compositions |
WO1999050378A1 (en) * | 1998-03-27 | 1999-10-07 | Unilever Plc | Fabric softening composition |
US6057285A (en) * | 1998-02-19 | 2000-05-02 | Colgate-Palmolive Co. | Stable rinse cycle fabric softener composition with GMS co-softener |
US6759383B2 (en) * | 1999-12-22 | 2004-07-06 | The Procter & Gamble Company | Fabric softening compound |
US6916779B2 (en) | 2002-03-28 | 2005-07-12 | Unilever Home & Personal Care Usa Division Of Conopco, Inc. | Fabric conditioning compositions |
WO2009015954A1 (en) * | 2007-07-27 | 2009-02-05 | Unilever Plc | Fabric softening composition |
WO2010062924A3 (en) * | 2008-11-26 | 2010-07-22 | Colgate-Palmolive Company | Fabric softening compositions and methods |
WO2011157490A1 (en) * | 2010-06-17 | 2011-12-22 | Henkel Ag & Co. Kgaa | Thickened fabric softener |
Citations (9)
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EP0086423A2 (en) * | 1982-02-15 | 1983-08-24 | Henkel Kommanditgesellschaft auf Aktien | Means and process for the aftertreatment of washed linen |
DE3312328A1 (en) * | 1983-04-06 | 1984-10-11 | Joh. A. Benckiser Gmbh, 6700 Ludwigshafen | Rinsing agent for the mechanical washing of laundry |
GB2170829A (en) * | 1985-01-30 | 1986-08-13 | Colgate Palmolive Co | Fabric softener composition |
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EP0309052A2 (en) * | 1987-09-23 | 1989-03-29 | The Procter & Gamble Company | Stable biodegradable fabric softening compositions containing linear alkoxylated alcohols |
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EP0404471A1 (en) * | 1989-06-19 | 1990-12-27 | Unilever Plc | Fabric softening composition |
EP0423894A2 (en) * | 1989-10-16 | 1991-04-24 | Colgate-Palmolive Company | New softening compositions and methods for making and using same |
EP0486113A2 (en) * | 1990-11-16 | 1992-05-20 | Akzo Nobel N.V. | Biodegradable fabric softeners derived from aspartic acid or glutaminic acid |
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1993
- 1993-08-17 WO PCT/US1993/007607 patent/WO1994004643A1/en not_active Application Discontinuation
- 1993-08-17 EP EP93920018A patent/EP0656935A1/en not_active Withdrawn
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EP0086423A2 (en) * | 1982-02-15 | 1983-08-24 | Henkel Kommanditgesellschaft auf Aktien | Means and process for the aftertreatment of washed linen |
DE3312328A1 (en) * | 1983-04-06 | 1984-10-11 | Joh. A. Benckiser Gmbh, 6700 Ludwigshafen | Rinsing agent for the mechanical washing of laundry |
GB2170829A (en) * | 1985-01-30 | 1986-08-13 | Colgate Palmolive Co | Fabric softener composition |
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EP0309052A2 (en) * | 1987-09-23 | 1989-03-29 | The Procter & Gamble Company | Stable biodegradable fabric softening compositions containing linear alkoxylated alcohols |
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EP0404471A1 (en) * | 1989-06-19 | 1990-12-27 | Unilever Plc | Fabric softening composition |
EP0423894A2 (en) * | 1989-10-16 | 1991-04-24 | Colgate-Palmolive Company | New softening compositions and methods for making and using same |
EP0486113A2 (en) * | 1990-11-16 | 1992-05-20 | Akzo Nobel N.V. | Biodegradable fabric softeners derived from aspartic acid or glutaminic acid |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5773409A (en) * | 1994-04-07 | 1998-06-30 | Lever Brothers Company, Division Of Conopco, Inc. | Fabric softening composition |
WO1996011250A1 (en) * | 1994-10-07 | 1996-04-18 | The Procter & Gamble Company | PARTICULATE FABRIC SOFTENER COMPOSITION CONTAINING BIODEGRADABLE CATIONIC ESTER AND pH MODIFIER |
US5525245A (en) * | 1994-12-21 | 1996-06-11 | Colgate-Palmolive Company | Clear, concentrated liquid fabric softener compositions |
US5656585A (en) * | 1994-12-21 | 1997-08-12 | Colgate-Palmolive Company | Clear, concentrated liquid fabric softener compositions |
EP0753571A1 (en) * | 1995-07-10 | 1997-01-15 | The Procter & Gamble Company | Process for making granular detergent composition |
US7015187B2 (en) | 1997-05-19 | 2006-03-21 | The Procter & Gamble Company | Fabric softening compound |
WO1998052907A1 (en) * | 1997-05-19 | 1998-11-26 | The Procter & Gamble Company | Quaternary fatty acid triethanolamine ester salts and their use as fabric softeners |
US6521589B2 (en) | 1997-05-19 | 2003-02-18 | The Procter & Gamble Company | Quaternary fatty acid triethanolamine ester salts and their use as fabric softeners |
EP0918086A1 (en) * | 1997-11-24 | 1999-05-26 | The Procter & Gamble Company | Fabric softening compositions |
WO1999027049A1 (en) * | 1997-11-24 | 1999-06-03 | The Procter & Gamble Company | Fabric softening compositions |
US6057285A (en) * | 1998-02-19 | 2000-05-02 | Colgate-Palmolive Co. | Stable rinse cycle fabric softener composition with GMS co-softener |
WO1999050378A1 (en) * | 1998-03-27 | 1999-10-07 | Unilever Plc | Fabric softening composition |
US6759383B2 (en) * | 1999-12-22 | 2004-07-06 | The Procter & Gamble Company | Fabric softening compound |
US6916779B2 (en) | 2002-03-28 | 2005-07-12 | Unilever Home & Personal Care Usa Division Of Conopco, Inc. | Fabric conditioning compositions |
WO2009015954A1 (en) * | 2007-07-27 | 2009-02-05 | Unilever Plc | Fabric softening composition |
WO2010062924A3 (en) * | 2008-11-26 | 2010-07-22 | Colgate-Palmolive Company | Fabric softening compositions and methods |
RU2495022C2 (en) * | 2008-11-26 | 2013-10-10 | Колгейт-Палмолив Компани | Fabric softening compositions and methods |
WO2011157490A1 (en) * | 2010-06-17 | 2011-12-22 | Henkel Ag & Co. Kgaa | Thickened fabric softener |
US9090853B2 (en) | 2010-06-17 | 2015-07-28 | Henkel Ag & Co. Kgaa | Thickened fabric softener comprising free palmitic acid to increase viscosity |
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