ES2637896T3 - Laundry compositions - Google Patents

Description

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DESCRIPTION

Clothes washing compositions Field of the invention

The present invention relates to a composition for washing clothes. More particularly, the invention relates to a softening system in the laundry composition for laundry.

Background of the invention

Textile fabrics, including fabrics, have traditionally been cleaned with laundry detergents. After cleaning, the tissues can often give the sensation of being rough. To avoid this, especially the roughness experienced after multiple washing cycles, technologies have been developed to increase the softness of the fabrics, including conditioner compositions that are added in the rinse and softening systems added to the detergent composition.

Fabric softener silicones have been used to provide softness to the fabrics from a laundry detergent composition. However, there is a problem with the stability of the formulation in terms of unacceptable turbidity.

Summary of the invention

In a first aspect, the invention relates to a liquid composition of laundry detergent comprising:

(a) 5 to 40% by weight of surfactant;

(b) 0.05 to 5% by weight of anionic silicone fabric softener;

(c) 0.05 to 2.5% by weight of cationic cellulose polymer having a nitrogen content of 0.7 to 1.4%;

(d) from 0.001 to 3% by weight of perfume; Y,

(e) from 0.005 to 2% by weight of fluorescent agent.

Preferably, the anionic silicone has a molecular weight of 1,000 to 100,000, more preferably 2,000 to 50,000, even more preferably 5,000 to 50,000, most preferably 10,000 to 50,000.

Preferably, the anionic silicone has an anionic group content of at least 1 mol%, preferably 2 mol%.

Preferably, the anionic silicone comprises a carboxy silicone.

Preferably, the silicone is added to the formulation in the form of an emulsion, more preferably in the form of a non-ionic emulsion, most preferably using a branched non-ionic emulsifier.

A preferred level of anionic silicone is present at a level of 0.1 to 2.5% by weight, preferably 0.1 to 2% by weight.

Preferably, the liquid detergent composition has a pH of 6 to 10, more preferably pH 6.5 to 9.5, most preferably pH 7 to 9, for example, pH 7.5 to 8.5.

A preferred level of the cationic polymer is 0.1 to 2% by weight, more preferably 0.1 to 1% by weight, most preferably 0.1 to 0.75% by weight.

A preferred cationic cellulose polymer is hydroxy ether cellulose, which is modified by incorporating cationic groups (ie, quaternized ethyl cellulose hydroxy).

Preferably, the weight ratio of the silicone to the cationic polymer is from 5: 1 to 1: 1.

Optionally, but preferably, the composition further comprises an ingredient selected from fatty acids or salts thereof, shading dyes, enzymes, antiredeposition polymers, dye transfer inhibiting polymers, detergency builders, sequestrants, sunscreens and / or polymers. of dirt release.

In a second aspect, the invention provides the use of a composition according to the first aspect of the invention to soften tissues.

Detailed description of the invention

As used herein, the term "comprising" means that it includes, consisting of, composed of, consisting of and / or consisting essentially of.

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All percentages mentioned are% by weight based on the total amount in the laundry composition unless otherwise indicated.

The invention relates to laundry compositions containing a surfactant, a cationic cellulose polymer having a specific nitrogen content, an anionic tissue softening silicone, a perfume and a fluorescent agent.

Form of the invention

The invention can take any of several forms that are liquid compositions for washing clothes (such as gels and aqueous liquids). Preferably, they are products for the main wash. They can take the form of a composition for washing clothes for the main wash, which can be dilutable or non-dilutable. The laundry composition may be, for example, an isotropic liquid, or a structured liquid with a surfactant. Particularly preferred forms of the present invention include the combination of detergent / softener products to provide a "wash softener".

Preferably, the liquid laundry detergent composition has a pH of 6 to 10, more preferably pH 6.5 to 9.5, most preferably pH 7 to 9, for example, pH 7.5 to 8.5.

Surfactants

The detergent composition preferably comprises an anionic surfactant and a nonionic surfactant.

Preferably, the weight ratio of the anionic surfactant to the non-ionic surfactant is from 5: 1 to 1: 3. More preferably, the weight ratio of the anionic surfactant to the nonionic surfactant is 5: 1 to 1: 2, even more preferably it is 5: 1 to 1: 1.25, most preferably it is 5: 1 to 1 : 1, for example, from 4: 1 to 1: 1.

Surfactants can be chosen from the surfactants described in "Surface Active Agents" Vol. 1, by Schwartz & Perry, Interscience 1949, Vol. 2 by Schwartz, Perry & Berch, Interscience 1958, in the current edition of "McCutcheon's Emulsifiers and Detergents" published by Manufacturing Confectioners Company or in "Tenside-Taschenbuch", H. Stache, 2nd ed., Carl Hauser Verlag, 1981. Preferably, the surfactants used are saturated.

Suitable non-ionic detergent compounds that can be used include, in particular, the reaction products of compounds having a hydrophobic group and a reactive hydrogen atom, for example, aliphatic alcohols, acids, amides or alkyl phenols with alkylene oxides , especially ethylene oxide, either alone or with propylene oxide. The specific non-ionic detergent compounds are condensates of C6 to C22 alkyl phenol-ethylene oxide, in general, 5 to 25 EO, that is, 5 to 25 units of ethylene oxide per molecule, and the condensation products of linear alcohols or branched, primary or secondary, Ca to C18, aliphatic with ethylene oxide, in general, 5 to 40 EO.

Alcohol ethoxylates are formed from the reaction of primary or secondary alcohols with ethylene oxide. Typically, a linear or branched alcohol, primary or secondary, C8 to C18, aliphatic is reacted with ethylene oxide in the molar amount required to produce the alcohol ethoxylate. Preferred alcohol ethoxylates have 2 to 40, preferably 3 to 30, more preferably 5 to 20 units of ethylene oxide attached to the aliphatic chain.

Suitable anionic detergent compounds that can be used may be water soluble alkali metal salts of sulfates and organic sulphonates having alkyl radicals containing from about 8 to about 22 carbon atoms, the term alkyl being used to include the alkyl part of higher acyl radicals. Examples of suitable synthetic anionic detergent compounds are sodium and potassium alkyl sulfates, especially those obtained by sulfating the higher C8 to C18 alcohols produced, for example, from tallow or coconut oil, Cg to C20 alkyl sodium benzene sulphonates and potassium, particularly C10 to C15 alkyl benzene linear secondary sodium sulfonates; and alkyl glyceryl ether sulfate sulfates, especially those ethers of the higher alcohols derived from tallow or coconut oil and synthetic alcohols derived from petroleum. Preferred anionic detergent compounds are C11 to C15 alkyl sodium benzene sulfonates and C12 to C18 alkyl sodium sulfates. Salts of sulfonates included as hydrotropes can be additionally considered as anionic surfactants, as defined herein. Surfactants such as those described in EP-A-328 177 (Unilever), which show resistance to protein precipitation, alkyl polyglycoside surfactants described in EP-A-070 074 and alkyl can also be used monoglycosides

The total amount of surfactant present in the composition is 5 to 40% by weight.

The level of surfactant is preferably at least 6% by weight, more preferably at least 10% by weight, more preferably the total amount of surfactant is 12.5 to 40% by weight, preferably 15 to 35% in weigh.

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A preferred surfactant system comprises an anionic surfactant and a non-surfactant

The non-ionic detergent is preferably present in amounts of 2 to 40% by weight, 35% by weight, more preferably 6 to 20% by weight.

Preferably, the non-ionic component of the detergent is present from 20 to preferably 25 to 60% by weight of the total surfactant content.

The nonionic surfactant preferably comprises alcohol ethoxylate.

A preferred nonionic surfactant has a C12-C15 alkyl chain with an average of 7 to 9 moles of ethoxylation.

The anionic surfactant is preferably present in amounts of 4 to 40% by weight, preferably 5 to 35% by weight, more preferably 6 to 20% by weight.

Preferably, the anionic component of the detergent is present from 25 to 80% by weight, more preferably from 40 to 80% by weight, most preferably from 50 to 80% by weight of the total surfactant content.

Preferred anionic surfactants are: linear alkyl benzene sulphonates, sodium lauryl ether sulfonates with 1 to 3 moles (average) of ethoxylation, primary alkyl sulfonates, methyl ether sulfates and secondary alkyl sulphonates or mixtures thereof.

The anionic surfactant preferably comprises linear alkylbenzene sulphonate.

In order to interpret the level of surfactant present in the formulation, fatty acids and their salts are not included in the level of surfactant.

Other surfactants such as amphoteric, zwitterionic and cationic surfactants may also be present in addition to the nonionic and anionic surfactants mentioned above.

Anionic silicone fabric softener

Silicones and their chemistry are described, for example, in "The Encyclopedia of Polymer Science", volume 11, p. 765

The composition comprises an anionic silicone fabric softener at a level of 0.05 to 5% by weight, preferably 0.1 to 2.5% by weight, more preferably 0.1 to 2% by weight.

Examples of anionic tissue softening silicones are silicones that incorporate carboxylic, sulfate, sulfonic, phosphate and / or phosphonate functionality.

Preferred anionic silicones are carboxyl functionalized silicones.

For the purposes of the invention disclosed herein, the anionic silicone may be in the form of the acid or anion. For example, for carboxyl functionalized silicone, it may be present as a carboxylic acid or a carboxylate anion.

Examples of commercially available materials are: X-22-3710, X-22-162C and X-22-3701E from Shin Etsu; CSi 2342 and Tego polish R20 from Evonik; SFD 209 from Dow Corning; Silube CS-1, CP-1 Silfos J208 from Siltech; Pecosil PS-100, PS112, PS 11220, WDS 100 by Phoenix Chemical; and Hansa LPF 711 of CHT Beitlich.

Preferably, the anionic silicone has a molecular weight of 1,000 to 100,000, more preferably 2,000 to 50,000, even more preferably 5,000 to 50,000, most preferably 10,000 to 50,000.

Preferably, the anionic silicone has an anionic group content of at least 1 mol%, preferably 2 mol%.

Preferably, the silicone is added to the formulation in the form of an emulsion, more preferably in the form of a non-ionic emulsion. More preferably, the emulsion is prepared from non-ionic emulsifiers, more preferably branched non-ionic emulsifiers, for example, Ecosurf EH-3 (Dow Chemical) or Berol 840 (Akzo Nobel).

Cationic polymer

ionic.

preferably from 75% by weight, plus

The composition comprises a cationic cellulose polymer at a level of 0.05 to 2.5% by weight, preferably 0.1 to 2% by weight, more preferably 0.1 to 1% by weight, most preferably of the 0.1 to 0.75% by weight.

This term refers to polymers that have a positive overall charge.

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The cationic polymer has a nitrogen content of 0.7 to 1.4%. Preferably, the nitrogen content is 0.75 to 1.2%, more preferably 0.8 to 1.1%.

A preferred cationic cellulose polymer is hydroxy ether cellulose which is modified by incorporation of cationic groups (ie, quaternized hydroxy ethyl cellulose).

A preferred class of cationic cellulose polymers suitable for the present invention are those having a modified cellulosic polysaccharide structure to incorporate a quaternary ammonium salt. Preferably, the quaternary ammonium salt is linked to the polysaccharide structure by a hydroxyethyl or hydroxypropyl group. Preferably, the nitrogen charged from the quaternary ammonium salt has one or more alkyl group substituents.

Cellulose is a polysaccharide with glucose as its monomer, specifically it is a straight chain polymer of D-glucopyranose units linked by means of p-1,4 glycosidic bonds and is a linear, unbranched polymer.

Illustrative cationic cellulose polymers are hydroxyethyl cellulose salts that are reacted with trimethyl ammonium substituted epoxide, termed in the field, under the International Nomenclature for Cosmetic Ingredients, Polyquaternium 10 and commercially available from The Dow Chemical Company, marketed as the Polymer LR and JR polymers series. Other polymers are marketed under the trade name SoftCAT of The Dow Chemical Company. Other suitable types of cationic celluloses include the polymeric quaternary ammonium salts of hydroxyethyl cellulose which are reacted with lauryl dimethyl ammonium substituted epoxide, termed in the field, under the International Nomenclature for Cosmetic Ingredients, Polyquaternium 24.

Typical examples of preferred cellulosic polymers include cocoxymethyl ammonium hydroxypropyl oxyethyl cellulose, lauryl dimethyl ammonium hydroxypropyl oxyethyl cellulose, stearyl dimethyl ammonium hydroxypropyl oxyethyl cellulose, and stearyl dimethyl ammonium hydroxyethyl cellulose; 2-hydroxyethyl 2-hydroxy 3- (trimethyl ammonium) propyl ether cellulose salt, polyquaternium-4, polyquaternium-10, polyquaternium-24 and polyquaternium-67 or mixtures thereof.

More preferably, the cationic cellulosic polymer is a cationic hydroxy ether quaternized cellulose polymer. These are commonly known as polyquaternium-10. Products of commercial cationic cellulosic polymers suitable for use according to the present invention are marketed by The Dow Chemical Corporation under the trade name UCARE.

The counterion of the cationic polymer is freely chosen from the halides: chloride, bromide and iodide; or between hydroxide, phosphate, sulfate, hydrosulfate, ethyl sulfate, methyl sulfate, format and acetate.

Many of the cationic cellulose polymers mentioned above can be synthesized, and are commercially available, in an amount of different molecular weights. Preferably, the molecular weight of the cationic polymer is 10,000 to 2,000,000 Daltons, more preferably 100,000 to 1,000,000 Daltons, even more preferably 250,000 to 1,000,000 Daltons.

Fragrance

The perfume is present in the range of 0.001 to 3% by weight, preferably 0.1 to 1% by weight. Many suitable examples of perfumes are provided in the CTFA (Cosmetic, Toiletry and Fragrance Association) 1992 International Buyers Guide, published by CFTA Publications and OPD 1993 Chemicals Buyers Directory 80th Annual Edition, published by Schnell Publishing Co.

It is common for a plurality of perfume components to be present in a formulation. In the compositions of the present invention it is considered that there will be four or more, preferably five or more, more preferably six or more or even seven or more different perfume components.

In perfume mixtures, preferably 15 to 25% by weight are high notes. The high marks are defined by Poucher (Journal of the Society of Cosmetic Chemists 6 (2): 80 [1955]). Preferred high notes are selected from dric oils, linalool, linalyl acetate, lavender, dihydromyrcenol, rose oxide and cis-3- hexanol.

It is preferred that the treatment composition for washing clothes does not contain a peroxygen bleach, for example, sodium percarbonate, sodium perborate and peracide.

Fluorescent agent

The composition preferably comprises a fluorescent agent (optical brightener). Fluorescent agents are well known and many such fluorescent agents are commercially available. Normally, these fluorescent agents are supplied and used in the form of their alkali metal salts, for example, sodium salts. The total amount of fluorescent agent or agents used in the composition is 0.005 to 2% by weight, preferably 0.01 to 0.1% by weight. Preferred classes of fluorescent agents are: di-styryl biphenyl compounds, for example, Tinopal (trademark) CBS-X, di-amine acid compounds

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di-sulfonic stilbene, for example, Tinopal DMS pure Xtra and Blankofor (trademark) HRH and pyrazoline compounds, for example, Blankophor sN. Preferred fluorescent agents are: 2- (4-styryl-3-sulfophenyl) -2H-naphthol [1,2-d] sodium trazol, 4,4'-bis {[(4-anilino-6- (N methyl- N-2 hydroxyethyl) amino 1,3,5-triazin-2-yl)] amino} -tylbeno-2-2 'disodium disulfonate, 4,4'-bis {[(4-anilino-6-morpholino-1, 3,5-triazin-2-yl)] amino} stilbene-2-2 'disodium disulfonate and 4,4'-bis (2-sulfoestyryl) biphenyl disodium.

Optional ingredients

The detergent composition may optionally comprise one or more of the following optional ingredients, fatty acids or salts thereof, shading dye, enzyme, anti-redeposition polymer, dye transfer inhibitor, detergency adjuvant, sequestrant, sunscreen and / or dirt release polymer.

Detergency adjuvants and sequestrants

The detergent compositions may also optionally contain relatively low levels of detergent adjuvant materials or organic sequestrants. Examples include alkali metals, citrates, succinates, malonates, carboxymethyl succinates, carboxylates, polycarboxylates and polyacetyl carboxylates. Specific examples include sodium, potassium and lithium salts of oxidisuccmic acid, melttic acid, polycarboxylic benzene acids, tetra-acetic ethylenediamine acid, diethylenetriaminepentaacetic acid, alkyl- or alkenyl succinic acid, nitrilotriacetic acid and citric acid. Other examples are DEQUEST ™, organic phosphonate sequestering agents sold by Thermophos and alkanohydroxy phosphonates.

Other suitable organic detergency builders include the higher molecular weight polymers and copolymers known to have detergency builder properties. For example, such materials include polyacrylic acid, polymaleic acid, and copolymers of suitable polyacrylic / polyamleic acid and salts thereof, such as those sold by BASF under the name SOKALAN ™. Another suitable detergency adjuvant is sodium carbonate.

If used, the detergency adjuvant materials may comprise from about 0.5% to 20% by weight, preferably from 1% by weight to 10% by weight of the composition. The preferred detergency adjuvant level is less than 10% by weight and preferably less than 5% by weight of the composition.

Preferably, the laundry detergent formulation is a laundry detergent formulation with non-phosphate detergent adjuvant, that is, it contains less than 1% phosphate by weight.

Matting dye

The tinting dyes are deposited on the fabric during the washing or rinsing stage of the washing procedure providing a visible hue to the tissue. The nuance of white garments can be made with any color depending on the consumer's preference. Blue and violet are particularly preferred shades and, consequently, the dyes or mixtures of preferred dyes are those that give a blue or violet hue to white tissues. The shading dyes used are preferably blue or violet.

The chromophore of the tinting dye is preferably selected from the group comprising: mono-azoic, bis-azoic, triphenylmethane, triphenedioxazine, phthalocyanine, naphtolactam, azine and anthraquinone. Most preferably, mono-azoic, bis-azoic, azine and anthraquinone.

Most preferably, the dye carries at least one sulfonate group.

Preferred tinting dyes are selected from direct dyes, acid dyes, hydrophobic dyes, cationic dyes and reactive dyes.

If included, the tinting dye is present in the liquid composition in the range of 0.0001 to 0.01% by weight.

Polymers

The composition may comprise one or more polymers. The polymers can help in the cleaning process by keeping the dirt in solution or suspension and / or avoiding the transfer of dyes. Polymers can also help in the dirt removal procedure. Dye transfer, anti-redeposition and dirt release polymers are described in more detail below.

The composition may comprise one or more polymers. Examples are carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, poly (ethylene glycol), poly (vinyl alcohol), ethoxylated polyamines, polycarboxylates, such as polyacrylates, maleic / acrylic acid copolymers, and lauryl methacrylate / acrylic acid copolymers.

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Dye transfer inhibitors

Modern detergent compositions typically employ pokmeros such as so-called "dye transfer inhibitors". These prevent the migration of dyes, especially during prolonged immersion times. In general, such dye transfer inhibiting agents include polyvinyl pyrrolidone polymers, N-oxide polyamine polymers, N-vinyl pyrrolidone and N-vinylimidazole copolymers, phthalocyanine manganese, peroxidases, and mixtures thereof, and are normally present at a level of 0.01 to 10% by weight based on the total amount in the laundry composition.

Anti-redeposition Polymers

Anti-redeposition polymers are designed to suspend or disperse dirt. Typically, anti-redeposition polymers are ethoxylated and / or propoxylated polyethylene imine or polycarboxylate materials, for example, homo- or copolymers based on acrylic acid available under the trademark ACUSOL of Dow Chemical, Alcosperse of Akzonobel or Sokolan of BASF.

Dirt Release Polymers

Examples of suitable soil release polymers include graft copolymers of poly (vinyl ester), for example, C1-C6 vinylic esters, preferably poly (vinyl acetate) grafted into polyalkylene oxide structures. Commercially available dirt release agents of this type include the type of SOKALAN material, for example, SOKALAN HP-22, available from BASF (Germany). Other suitable soil release polymers of a different type include the commercially available material ZELCON 5126 (from DuPont) and MILEASE T (from ICI). If present, the dirt release polymer can be included at a level of 0.01 to 10% by weight based on the total amount in the laundry composition. Other examples of dirt release polymers are copolymers of terephthalic acid / glycol sold under the trademarks Texcare, Repel-o-tex, Gerol, Marloquest, Cirrasol.

Hydrotrope

If it is in the form of a liquid, then the liquid detergent composition may optionally include a hydrotrope, which can prevent the formation of liquid crystal. The addition of the hydrotrope thus helps the clarity / transparency of the composition. Suitable hydrotropes include, but are not limited to, propylene glycol, ethanol, glycerol, urea, benzene sulphonate salts, toluene sulfonate, xylene sulfonate or cumene sulfonate. Suitable salts include, but are not limited to, sodium, potassium, ammonium, monoethanolamine, triethanolamine. Sulfonate salts can also be considered as anionic surfactants, as defined herein. Preferably, the hydrotrope is selected from the group consisting of propylene glycol, xylene sulfonate, ethanol and urea to provide optimum performance. The amount of the hydrotrope is generally in the range of 0 to 30%, preferably 0.5 to 30%, more preferably, 0.5 to 30%, most preferably, 1 to 15%.

Enzymes

Enzymes may also be present in the formulation. Preferred enzymes include protease, lipase, pectate lyase, amylase, cutinase, cellulase, mannanase. If present, enzymes can be stabilized with a known enzyme stabilizer, for example, boric acid.

Examples

Formulation production procedure

Water and hydrotropes are mixed with each other at room temperature (approximately 22 ° C) for 2-3 minutes at a shear rate of 150 rpm using an IKA RW20 top mixer from Janke & Kunkel. The salts and alkalis are added and mixed for 5 minutes before the addition of surfactants and fatty acid. The mixture will present a slight exotherm at this point. After allowing it to cool to <30 ° C, the cationic polymer solution (LR400 added as an aqueous solution), and any remaining components, such as perfume, preservatives, dyes and silicones, are added. The silicone was added at 1% by weight (unless otherwise indicated), and added as an emulsion. Formulations with a number are according to the invention, formulations with a letter are comparative.

Table 1

 Cationic number

 % nitrogen

 Ucare LK

 0.4-0.6

 Ucare LR400

 0.8 -1.1

 Ucare JR400

 1.5 -2.2

 Jaguar C500

 1.15 -1.45

Ucare information is provided by Dow Chemical; Jaguar C500 - specification sheet. Experiment 1

Table 2

 Ingredient

 A% by weight A ’% by weight B% by weight 1% by weight C% by weight D% by weight

 Monopropylene glycol

 15 15 15 15 15 15

 TORCH

 4 4 4 4 4 4

 Fluorescent agent

 0.25 0.25 0.25 0.25 0.25 0.25

 Cfric acid

 2 2 2 2 2 2

 Neodol 25-7

 12 12 12 12 12 12

 LAS acid

 8 8 8 8 8 8

 Fatty acid

 3 3 3 3 3 3

 SLES

 4 4 4 4 4 4

 Phosphonate

 0.5 0.5 0.5 0.5 0.5 0.5

 Wacker1 anionic silicone

 1.0 - 1.0 1.0 1.0 1.0

 Silicone (PDMS)

 - 1,0 - - - -

 LK2

 - - 0.4 - - -

 LR4002

 - - - 0.4 - -

 JR4002

 - - - - 0.4 -

 C5003

 - - - - - 0.4

 Fragrance

 1.0 1.0 1.0 1.0 1.0 1.0

 Others; dyes, enzymes, preservative

 <5% <5% <5% <5% <5% <5%

 NaOH

 up to pH up to pH up to pH up to pH up to pH up to pH

 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5

 Water

 up to 100 up to 100 up to 100 up to 100 up to 100

1 Functional silicone supplied by Wacker with carboxy functionality

2HEC cationica Ucare supplied by Dow Chemical

3Guar cationic supplied by Rhodia__________________________

5 The PDMS variants of Formulations A to D and 1 are not stable (an example is shown as A 'in Table 2).

Experimental methodology to determine softness

12 pieces of 20 x 20 cm towel curl fabric were washed 5 times in an automatic front loading washing machine using a 40 ° C cotton cycle. The total load is completed up to 2 kg with a mixture of 50/50 10 of cotton savanna fabric and polyalgodon. The towels were allowed to dry naturally between washes.

Smoothing Results

The towels were evaluated by a trained panel of 12 people who evaluated the towel with respect to the softness compared to the control sample A. The formulation A was given a score of 100. The smoothing score is an average of the scores of the 12 panelists.

15 Table 3

 Formulation

 Smoothing score

 TO

 100

 B

 103

 one

 176

 C

 145

 D

 142

Table 3 shows that the best smoothing score was the combination of anionic silicone with a cationic cellulose polymer having 0.7 to 1.4% nitrogen.

The smoothness was then measured using a Stable Micro Systems XT plus Texture Analyzer (TA) with the optional friction module attached. The TA is a commercial instrument that incorporates a drive mechanism and a 5 kg load cell. The treated tissue was placed on the horizontal test platform of the instrument and a cylindrical probe made of neoprene rubber that is attached to the load cell was placed on the surface of the tissue.

The texture analyzer is programmed to move the probe over a distance of 40 mm forward and backward over the tissue at a speed of 10 mm / s. As the probe moves, the software records the frictional force experienced by the probe.

The average coefficient of friction throughout the test is used as a measure of smoothness. The results are shown in Table 4.

Table 4

 Formulation

 Coefficient of friction

 B

 1,324

 one

 1,248

 C

 1,309

 D

 1,292

Table 4 shows that the lowest friction (and, therefore, the softest tissue) was the one treated with a formulation comprising the combination of anionic silicone with a cationic cellulose polymer having from 0.7 to 1, 4% nitrogen. This finding agrees with, and also confirms, the softness data of the panel trials.

Experiment 2

Table 5

 Ingredient

 E% by weight E '% by weight F% by weight 2% by weight G% by weight H% by weight

 Monopropylene glycol

 15 15 15 15 15 15

 TORCH

 4 4 4 4 4 4

 Fluorescent agent

 0.25 0.25 0.25 0.25 0.25 0.25

 Cfric acid

 2 2 2 2 2 2

 Neodol 25-7

 6 6 6 6 6 6

 LAS acid

 12 12 12 12 12 12

 Fatty acid

 3 3 3 3 3 3

 SLES

 6 6 6 6 6 6

 Phosphonate

 0.5 0.5 0.5 0.5 0.5 0.5

 Wacker1 anionic silicone

 1.0 - 1.0 1.0 1.0 1.0

 Silicone (PDMS)

 - 1,0 - - - -

 LK2

 - - 0.4 - - -

 LR4002

 - - - 0.4 - -

 JR4002

 - - - - 0.4 -

 C5003

 - - - - - 0.4

 Fragrance

 1.0 1.0 1.0 1.0 1.0 1.0

 Others; dyes, enzymes, preservative

 <5% <5% <5% <5% <5% <5%

 NaOH

 up to pH up to pH up to pH up to pH up to pH up to pH

 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5 8.0-8.5

 Water

 up to 100 up to 100 up to 100 up to 100 up to 100

1 Functional silicone supplied by Wacker with carboxylic functionality

2HEC cationica Ucare supplied by Dow Chemical

3Guar cationic supplied by Rhodia__________________________

The PDMS variants of Formulations E to H and 2 are not stable (an example is shown as E 'in Table 5).

15 Experimental methodology for determining softness Same as for Example 1.

Smoothing Results

The towels were evaluated by a trained panel of 12 people who evaluated the towel with respect to the softness compared to the control sample A. The Formula A was given a score of 100. The 20 smoothing score is an average of the scores of the 12 panelists.

Table 6

 Formulation

 Smoothing score

 AND

 100

 F

 146

 2

 197

 G

 156

 H

 125

Table 6 shows that the best smoothing score was the combination of anionic silicone with a cationic cellulose polymer having 0.7 to 1.4% nitrogen.

The smoothness was then measured using a Stable Micro Systems XT plus Texture Analyzer (TA) as in Example 1. The results are shown in Table 7.

Table 7

 Formulation

 Coefficient of friction

 F

 1,292

 2

 1,239

 G

 1,304

 H

 1,267

Table 7 shows that the lowest friction (and, therefore, the softest tissue) was treated with a formulation comprising the combination of anionic silicone with a cationic cellulose polymer having from 0.7 to 1, 4% nitrogen. This finding agrees with, and also confirms, the softness data of the panel trials.

Experiment 3

Table 8

 Ingredient

 3% by weight I% by weight 4% by weight J% by weight 5% by weight K% by weight

 Monopropylene glycol

 12 12 12 12 12 12

 Glycerol

 5 5 5 5 5 5

 TORCH

 2.5 2.5 2.5 2.5 2.5 2.5

 Fluorescence agent

 0.25 0.25 0.25 0.25 0.25 0.25

 Cfric acid

 2 2 2 2 2 2

 Neodol 25-7

 4.5 4.5 4.5 4.5 4.5 4.5

 LAS acid

 9 9 9 9 9 9

 Fatty acid

 3 3 3 3 3 3

 SLES

 6.5 6.5 6.5 6.5 6.5 6.5

 Phosphonate

 1.0 1.0 1.0 1.0 1.0 1.0

 Ethoxylated polyethyleneimine

 2 2 2 2 2 2

 A1 anionic silicone

 1.2 1.2 - - - -

 B1 anionic silicone

 - - 1.2 1.2 - -

 C2 anionic silicone

 - - - - 1.2 1.2

 LR4003

 2.0 - 2.0 - 2.0 -

 JR4003

 - 2.0 - 2.0 - 2.0

 Fragrance

 1.0 1.0 1.0 1.0 1.0 1.0

 Others; dyes, enzymes, preservative

 <5% <5% <5% <5% <5% <5%

 NaOH

 up to pH 8.0-8.5 up to pH 8.0-8.5 up to pH 8.0-8.5 up to pH 8.0-8.5 up to pH 8.0-8.5 up to pH 8.0 -8.5

 Water

 up to 100 up to 100 up to 100 up to 100 up to 100

 1 Functional silicone supplied by Evonik with carboxylic functionality 2 Functional silicone supplied by Wacker with carboxylic functionality 3HEC cationic Ucare supplied by Dow Chemical

Softness measurement

12 pieces of 20 x 20 cm towel curl fabric were washed 5 times in an automatic front loading washing machine using a 40 ° C cotton cycle. The total load is completed up to 2 kg with a 50/50 mixture of cotton and polyalgodon savanna fabric. The towels were allowed to dry naturally between washes.

The smoothness was then measured using a Stable Micro Systems XT plus Texture Analyzer (TA) as in Example 1. The results are shown in Table 9.

Table 9

 Formulation

 Coefficient of friction

 3

 1,091

 I

 1,265

 4

 1,101

 J

 1,286

 5

 1,106

 K

 1,257

Table 9 shows that the lowest friction scores (and, therefore, the softest tissue) were of the 5 tissues treated with a formulation comprising the combination of anionic silicone with a cationic cellulose polymer having 0 , 7 to 1.4% nitrogen.

Claims (13)

5 10 fifteen twenty 25 30 35 1. A laundry detergent composition comprising: (a) 5 to 40% by weight of surfactant; (b) 0.05 to 5% by weight of anionic silicone fabric softener; (c) 0.05 to 2.5% by weight of cationic cellulose polymer having a nitrogen content of 0.7 to 1.4%; (d) from 0.001 to 3% by weight of perfume; Y, (e) from 0.005 to 2% by weight of fluorescent agent. 2. A composition according to claim 1, wherein the anionic silicone has a molecular weight of 1,000 to 100,000, more preferably 2,000 to 50,000, even more preferably 5,000 to 50,000, most preferably 10,000 to 50,000. 3. A composition according to claim 1 or claim 2, wherein the anionic silicone has a content of an anionic group of at least 1% molar, preferably 2% molar. 4. A composition according to any preceding claim, in which the anionic silicone is present at a 0.1 to 2.5% by weight level, preferably 0.1 to 2% by weight. 5. A composition according to any preceding claim, wherein the anionic silicone comprises a carboxy silicone. 6. A composition according to any preceding claim, wherein the silicone is added to the formulation in the form of an emulsion, preferably in the form of a non-ionic emulsion, most preferably using a branched non-ionic emulsifier. 7. A composition according to any preceding claim, wherein the liquid detergent composition has a pH of 6 to 10, more preferably pH 6.5 to 9.5, most preferably pH 7 to 9, for example, of pH 7.5 to 8.5. 8. A composition according to any preceding claim, wherein the cationic polymer is present at a level of 0.1 to 2% by weight, preferably 0.1 to 1% by weight, most preferably 0.1 to 0 , 75% by weight. 9. A composition according to any preceding claim, wherein the cationic cellulose polymer is quaternized hydroxy ethyl cellulose. 10. A composition according to any preceding claim, in which the weight ratio of the silicone to the cationic polymer is from 5: 1 to 1: 1. 11. A composition according to any preceding claim, wherein the anionic surfactant comprises one or more of the following group: linear alkyl benzene sulphonates, sodium lauryl ether sulphonates with 1 to 3 moles on average ethoxylation, primary alkyl sulfonates, methyl ether sulfates and secondary alkyl sulfonates or mixtures thereof. 12. A composition according to any preceding claim, wherein the composition further comprises an ingredient selected from fatty acids or salts thereof, tinting dyes, enzymes, an antiredeposition polymer, a dye transfer inhibitor polymer, detergency builders, sequestrants, sunscreens and / or a dirt release polymer. 13. Use of a composition according to any one of claims 1 to 12 to soften tissues.