EP1392806B1 - Procede d'adoucissement des tissus - Google Patents

Procede d'adoucissement des tissus Download PDF

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Publication number
EP1392806B1
EP1392806B1 EP02722512A EP02722512A EP1392806B1 EP 1392806 B1 EP1392806 B1 EP 1392806B1 EP 02722512 A EP02722512 A EP 02722512A EP 02722512 A EP02722512 A EP 02722512A EP 1392806 B1 EP1392806 B1 EP 1392806B1
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Prior art keywords
fabric
softener
alkyl
weight
cationic
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EP02722512A
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German (de)
English (en)
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EP1392806A1 (fr
Inventor
Francesca Reckitt Benckiser Italia ROSIELLO
Anthony Reckitt Benckiser Italia SIDOTI
Roberto Reckitt Benckiser Italia VANIN
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Reckitt Benckiser NV
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Reckitt Benckiser NV
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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
    • C11D3/16—Organic compounds
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3418—Toluene -, xylene -, cumene -, benzene - or naphthalene sulfonates or sulfates
    • 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
    • C11D1/645—Mixtures of compounds all of which are cationic
    • 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
    • C11D3/0015—Softening compositions liquid
    • 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
    • C11D1/40—Monoamines or polyamines; 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
    • C11D1/38—Cationic compounds
    • C11D1/42—Amino alcohols or amino ethers
    • 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

Definitions

  • the present invention relates to fabric softening compositions, preferably translucent, clear or transparent conditioners, which in addition to a cationic fabric softener comprise a fabric co-softener, and a hydrotope.
  • Fabric softening compositions are known in the art for imparting benefits such as softness and/or antistatic properties to the treated fabric.
  • consumer acceptance of fabric softening compositions is determined not only by the performance achieved with these products but also by the aesthetics associated therewith. Viscosity of the product is therefore an important aspect of the successful formulation of such commercial products, stable low to medium viscosities being highly preferred by consumers.
  • Clear fabric softeners are usually achieved through the use of high concentrations of organic solvents. Viscous solutions are usually prepared by the addition of gelling/thickening agent. However we have found that certain clear compositions can be produced without the use of organic solvents, without the need to add a thickening/gelling system. The reduction or elimination of a thickening/gelling system will reduce the cost of the formulation. In addition the organic solvents used to produce clear fabric softening compositions have a negative odour.
  • a softening composition with a medium viscosity, able to provide fabric softening, static control, water dispersibility, rewettability and aesthetic fragrance benefits. It is a further feature of the invention that, preferably, the softening composition is clear.
  • a person skilled in the art can produce clear fabric softener compositions by the combination of quaternary ammonium compound with organic solvents. These compositions generally have high organic solvent concentrations which are needed to provide clarity, but have a high negative odour and, usually, poor softening performance.
  • compositions have a low viscosity in the absence of a thickening/gelling system.
  • Aqueous viscous cleaning compositions including: a) inorganic or organic acid, b) a cationic detergent, c) a water insoluble or partially soluble covalent compound such us an ester of an inorganic acid, a fatty acid or an ester of a fatty acid, a carboxylic acid ester or amine-oxide and d) anionic sulfonate, are described on Patents GB 1240469 or EP 0 265 979.
  • Clear single phase fabric softeners comprising an anionic surfactant having an alkyl radical containing at least eight carbon atoms, a cationic surfactant and an effective amount of propylene glycol and an alkali metal salt of benzene, toluene or xylene sulfonate are described in US 4751009.
  • the present invention is based on the surprising discovery that it is possible to obtain a stable clear medium viscosity fabric softener that performs well on softening fabrics, which comprises a cationic surfactant, a co-softening agent and a hydrotope, such as an alkali metal salt of a benzene, cumene, toluene or xylene sulfonate.
  • a cationic surfactant such as an alkali metal salt of a benzene, cumene, toluene or xylene sulfonate.
  • medium viscosity it is meant a viscosity of 50 mPa.s to 5000 mPa.s preferably 200 to 2,000 mPa.s, as measured on a Brookfield LV, spindle 2, 12 rpm and at 20°C.
  • the present invention is a method of treating fabric which comprises the step of contacting said fabric in the rinse cycle of a fabric washing machine with an aqueous medium containing a composition comprising:
  • a cationic fabric softener is an essential ingredient of the invention.
  • Typical levels of the cationic fabric softener within the softening compositions are 3 % to 20 % by weight, preferably from 4 % to 15 % by weight, and more preferably from 4 % to 10 % by weight of the composition.
  • the preferred cationic fabric softening components include the water-dispersible quaternary ammonium fabric softeners or an amine precursor thereof.
  • Preferred quaternary ammonium compounds herein are of formula (I): wherein Q is selected from -CH 2 -, -O-C(O)-, -C-(O)-O- and -O-C(O)-O- (preferably -CH 2 -); R 1 , R 2 and R 3 are independently selected from C 1 -C 4 alkyl or C 1 -C 4 hydroxyalkyl or H (typically methyl) ; T 1 is C 6 -C 22 alkyl or alkenyl (typically alkyl); n is an integer from 0 to 4 (preferably n is 2); and X - is a softener-compatible anion.
  • Non-limiting examples of a softener-compatible anion include chloride or methyl sulfate, preferably chloride.
  • the alkyl, or alkenyl, chain T1 should contain at least 5 carbon atoms, preferably at least 13 carbon atoms, more preferably at least 15 carbon atoms.
  • the chain may be straight or branched.
  • a specific example of a quaternary ammonium compound suitable for use in the aqueous fabric softening compositions herein is hydrogenated tallow trimethyl ammonium X - , wherein X - is preferably chloride.
  • the level of unsaturation of the chain can be measured by the Iodine Value (IV) of the corresponding fatty acid, which in the present case should preferably be in the range of from 5 to 100 with two categories of compounds being distinguished, having a IV below or above 25.
  • IV Iodine Value
  • the anion is merely present as a counterion of the positively charged quaternary ammonium compounds.
  • the nature of the counterion is not critical at all to the practice of the present invention. The scope of this invention is not considered limited to any particular anion.
  • amine precursor thereof it is meant the secondary or tertiary amine corresponding to the above quaternary ammonium compounds, said amines being substantially protonated in the present compositions due to the pH values.
  • the pH of the liquid compositions herein is a preferred parameter of the present invention. Indeed, the pH influences the stability of the quaternary ammonium or amine precursors compounds, especially in prolonged storage conditions.
  • the pH as defined in the present context, is measured in the neat compositions at 20°C.
  • the neat pH measured in the above-mentioned conditions, is ideally in the range of from 2 to 5.
  • the pH of these compositions herein can be regulated by the addition of a Bronsted acid.
  • suitable acids include the inorganic mineral acids, carboxylic acids, in particular the low molecular weight (C 1 -C 5 ) carboxylic acids, and alkylsulfonic acids.
  • Suitable inorganic acids include HCl, H 2 SO 4 , HNO 3 and H 3 PO 4 .
  • Suitable organic acids include formic, acetic, citric, methylsulfonic and ethylsulfonic acid.
  • Preferred acids are citric, hydrochloric, phosphoric, formic, methylsulfonic acid, and benzoic acids. Especially preferred is citric acid.
  • the softening composition of the invention will also comprise a liquid carrier.
  • Suitable liquid carriers are selected from water, organic solvents and mixtures thereof.
  • the liquid carrier employed in the instant compositions is preferably at least primarily water due to its low cost, safety, and environmental compatibility.
  • the level of water in the liquid is preferably at least 80 %, most preferably at least 90 %, by weight of the carrier.
  • the liquid carrier is at least 20 %, most preferably at least 30 %, by weight of the composition. Mixtures of water and low molecular weight (by "low molecular weight” we mean less than 200) organic solvent may be used.
  • Preferred low molecular weight organic solvents are; monohydric alcohol, such as ethanol, propanol, iso-propanol or butanol; dihydric alcohol, such as glycol; trihydric alcohols, such as glycerol, and polyhydric (polyol) alcohols.
  • Hydrotropes aid in the solubility or dispersibility of different surfactants in aqueous solution. This usually has the side effect of lowering the viscosity of the resulting mixture.
  • a hydrotrope in our compositions causes a viscosity increase. Whilst not being bound by theory we believe this is likely due to the complex formed between the anionic hydrotrope salt and the cationic surfactant. The complex is soluble and clear in solution and provides a viscosity increasing matrix.
  • Suitable and preferred hydrotropes are the alkali metal salts of a benzene, cumene, toluene and xylene sulfonate, ideally the sodium salt.
  • Fabric co-softeners are understood by the skilled person as non-quarternary hydrophilic compounds which are added to boost softening performance.
  • the used co-softeners are amines of formula (II) at least one, and preferably no more than two, of R 3 , R 4 and R 5 are C 16-22 alkyl or alkenyl (preferably alkenyl), preferably C 17-19 ideally C 18 ; and the remaining group(s), if any, are C 1-4 hydroxyalkyl or hydrogen, preferably C 1-4 hydroxyalkyl, ideally hydroxyethyl.
  • a preferred compound is oleylbis(2-hydroxyethyl)amine.
  • co-softeners include, but are not limited to; amine oxides, betaines and alkali metal soaps.
  • the preferred fatty acid precursors contain a high proportion of unsaturation, with oleyl groups being the most preferred.
  • the composition may also contain optional components which may be suitable for further improving the aesthetic appearance of the fabrics treated therewith.
  • optional components include polyethylene glycols, additional fabric softening components, enzymes, cyclodextrin/perfume complexes and free perfume delivery systems, and mixtures thereof, preferably in the form of an alkali metal salt, ideally sodium.
  • a polymeric material which can optionally be included is polyethylene glycol (PEG).
  • PEG polyethylene glycol
  • PEG may provide an increase in the viscosity stability upon storage of the composition of the invention.
  • Typical molecular weight ranges for these purposes range from 500 to 100,000. preferably from 1,000 to 50,000, more preferably from 1,500 to 10,000.
  • a most preferred molecular weight is 4,000.
  • typical levels of polyethylene glycols are from 0.01 to 1 % by weight, preferably from 0.05 % to 0.5 % by weight of the composition.
  • composition may also optionally contain additional components, example include, but are not limited by, surfactant concentration aids, electrolyte concentration aids, antioxidants and reductive agents, emulsifiers, bacteriocides, colorants, perfumes, preservatives, optical brighteners, anti ionisation agents, chelants, natural and synthetic extracts and antifoam agents.
  • additional components include, but are not limited by, surfactant concentration aids, electrolyte concentration aids, antioxidants and reductive agents, emulsifiers, bacteriocides, colorants, perfumes, preservatives, optical brighteners, anti ionisation agents, chelants, natural and synthetic extracts and antifoam agents.
  • Stabilisers may also optionally be added. When used, said stabiliser will help achieving the desired finished product viscosity as well as stabilising the finished product upon storage.
  • Stabilisers are typically selected from single long chain alkyl cationic surfactants, nonionic alkoxylated surfactants, amine oxides, fatty acids, and mixtures thereof, typically used at a level of from 0 to 15 % by weight of the composition.
  • Inorganic viscosity control agents which can also act like or augment the effect of the stabilisers, include water-soluble, ionisable salts which can also optionally be incorporated into the compositions of the present invention. Incorporation of these components to the composition must be processed at a very slow rate.
  • ionisable salts can be used.
  • suitable salts are the halides of the Group IA and IIA metals of the Periodic Table of the Elements, e.g., calcium chloride, magnesium chloride, sodium chloride, potassium bromide, and lithium chloride.
  • the ionisable salts are particularly useful during the process of mixing the ingredients to make the compositions herein, and later to obtain the desired viscosity.
  • the amount of ionisable salts used depends on the amount of active ingredients used in the compositions and can be adjusted according to the desires of the formulator. Typical levels of salts used to control the composition viscosity are from 20 to 2000 parts per million (ppm), preferably from 20 to 1100 ppm, by weight of the composition.
  • Alkylene polyammonium salts can be incorporated into the composition to give viscosity control in addition to or in place of the water-soluble, ionisable salts above.
  • these agents can act as scavengers, forming ion pairs with anionic detergent carried over from the main wash, in the rinse, and on the fabrics, and may improve softness performance. These agents may stabilise the viscosity over a broader range of temperature, especially at low temperatures, compared to the inorganic electrolytes.
  • alkylene polyammonium salts include 1-lysine monohydrochloride and 1,5-diammonium 2-methyl pentane dihydrochloride.
  • the present invention also encompasses a method for treating fabrics which comprises the step of contacting said fabrics in the rinse cycle with an aqueous medium containing a composition as defined hereinbefore.
  • the aqueous medium is at a temperature between 2 to 40°C, preferably between 5 to 25 °C.
  • a cationic surfactant of formula (I) usually gives a relatively low performance compared with standard ditallow Esterquat.
  • a hydrotrope such as Sodium Cumene Sulphonate (SCS) and Sodium Xylene Sulphonate (SXS)
  • SCS Sodium Cumene Sulphonate
  • SXS Sodium Xylene Sulphonate

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  • 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)
  • Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Chemical Or Physical Treatment Of Fibers (AREA)

Claims (8)

  1. Procédé pour le traitement d'une étoffe, qui comprend l'étape de mise en contact de l'étoffe dans le cycle de rinçage d'une machine à laver le linge avec un milieu aqueux contenant une composition comprenant :
    a) un assouplissant cationique d'étoffes en une quantité de 3 % à 20 % en poids,
    b) 1 à 10 % en poids d'un composé co-assouplissant d'étoffes, de formule (II)
    Figure 00180001
    dans laquelle au moins un, et de préférence pas plus de deux, des groupes R3, R4 et R5 représente des groupes alkyle ou alcényle (de préférence alcényle) en C16 à C22, de préférence en C17 à C19, idéalement en C18 ; et le ou les groupes restants, s'il en existe, sont des groupes hydroxyalkyle en C1 à C4 ou des atomes d'hydrogène, de préférence des groupes hydroxyalkyle en C1 à C4, idéalement hydroxyéthyle.
    c) 0,1 % à 5 % en poids d'un agent hydrotrope.
  2. Procédé suivant la revendication 1, dans lequel l'assouplissant cationique d'étoffes est présent en une quantité de 4 % à 10 % en poids de la composition.
  3. Procédé suivant la revendication 1 ou 2, dans lequel l'assouplissant cationique d'étoffes consiste en composés d'ammonium quaternaire répondant à la formule (I) ci-dessous :
    Figure 00190001
       dans laquelle Q est choisi entre des groupes -CH2-, -O-C(O)-, -C-(O)-O- et -O-C(O)-O- (de préférence -CH2-) ;
       R1, R2 et R3 sont choisis indépendamment entre des groupes alkyle en C1 à C4 et hydroxyalkyle en C1 à C4 ou H (de préférence méthyle) ;
       T1 représente un groupe alkyle ou alcényle (de préférence alkyle) en C6 à C22 ;
       n représente un nombre entier de 0 à 4 (de préférence n est égal à 2) ; et
       X- représente un anion compatible avec un assouplissant.
  4. Procédé suivant la revendication 3, dans lequel l'anion X- compatible avec un assouplissant est un anion chlorure ou méthylsulfate, de préférence chlorure.
  5. Procédé suivant les revendications 3 et 4, dans lequel la chaíne alkyle ou alcényle T1 doit contenir au moins 5 atomes de carbone, avantageusement au moins 13 atomes de carbone, plus avantageusement au moins 15 atomes de carbone.
  6. Procédé suivant l'une quelconque des revendications 1 à 5, dans lequel l'agent hydrotrope est un benzènesulfonate, un cumènesulfonate, un toluènesulfonate ou un xylènesulfonate, sous forme d'un sel de métal alcalin, idéalement de sodium.
  7. Procédé suivant l'une quelconque des revendications 1 à 6, dans lequel l'agent hydrotrope est présent en une quantité de 0,1 à 2,5 % en poids volume.
  8. Procédé suivant la revendication 7, dans lequel le co-assouplissant d'étoffe est l'oléylbis(2-hydroxyéthyl)amine.
EP02722512A 2001-05-11 2002-05-10 Procede d'adoucissement des tissus Expired - Lifetime EP1392806B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB0111542A GB2375356A (en) 2001-05-11 2001-05-11 Cationic fabric softening compositions
GB0111542 2001-05-11
PCT/GB2002/002166 WO2002092742A1 (fr) 2001-05-11 2002-05-10 Composition adoucissante de tissus

Publications (2)

Publication Number Publication Date
EP1392806A1 EP1392806A1 (fr) 2004-03-03
EP1392806B1 true EP1392806B1 (fr) 2005-12-07

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EP (1) EP1392806B1 (fr)
AT (1) ATE312154T1 (fr)
DE (1) DE60207854T2 (fr)
ES (1) ES2249571T3 (fr)
GB (1) GB2375356A (fr)
WO (1) WO2002092742A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10676694B2 (en) 2016-12-22 2020-06-09 The Procter & Gamble Company Fabric softener composition having improved detergent scavenger compatibility

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE24016T1 (de) * 1981-04-06 1986-12-15 Procter & Gamble Verstaerkte reinigungsmittelzusammensetzungen die ternaere, aktive systeme enthalten.
SE8504661L (sv) * 1984-10-17 1986-04-18 Colgate Palmolive Co Mjukgorande och antistatisk vetskeformig detergentkomposition
DE3661481D1 (en) * 1985-05-28 1989-01-26 Unilever Nv Liquid cleaning and softening compositions
EP0265979B2 (fr) * 1986-09-29 1998-06-03 Akzo Nobel N.V. Compositions détergentes aqueuses épaissies
NO170944C (no) * 1987-01-24 1992-12-30 Akzo Nv Fortykkede, vandige preparater, samt anvendelse av slike
US4751009A (en) * 1987-08-05 1988-06-14 Akzo America Inc. Fabric softeners comprising stable single phase clear solutions of anionic and cationic surfactants
GB8805837D0 (en) * 1988-03-11 1988-04-13 Unilever Plc Fabric conditioning composition
GB8916308D0 (en) * 1989-07-17 1989-08-31 Unilever Plc Fabric softening
US5466394A (en) * 1994-04-25 1995-11-14 The Procter & Gamble Co. Stable, aqueous laundry detergent composition having improved softening properties

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ES2249571T3 (es) 2006-04-01
DE60207854T2 (de) 2006-08-17
EP1392806A1 (fr) 2004-03-03
DE60207854D1 (de) 2006-01-12
WO2002092742A1 (fr) 2002-11-21
GB2375356A (en) 2002-11-13
ATE312154T1 (de) 2005-12-15
GB0111542D0 (en) 2001-07-04

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