ES2305731T3 - SOFTENING COMPOSITION OF FABRICS. - Google Patents

Abstract

A composition comprising a cationic fabric conditioning agent, a water-soluble protein or derivative thereof, a thickener that is substantive to the fibres of a fabric, a fabric softening silicone and water. Preferably, the cationic fabric conditioning active is di-(tallow carboxyethyl) hydroxyethyl methyl ammonium X<-> and the water-soluble protein is selected from wheat, cotton, silk, keratin, collagen, elastin, casein and soya. The thickener is preferably a water-soluble polymer, more preferably a cationic carbohydrate, most preferably a guar gum. The silicone is preferably an aminosilicone or a methicone derivative and the balance of the composition is water. Most preferably, the composition additionally comprises a fatty compound as a co-softener. The composition has excellent fabric softening properties and also protects fabrics, especially wool from felting.

Description

Fabric softening composition.

The present invention relates to compositions fabric softeners that not only provide excellent advantages as softeners but also protect the tissues, especially those of wool, of the felting process. The fabric softening composition contains, in addition to the usual ingredients found in such compositions, at least one thickener that is a carbohydrate derivative and that is fabric noun, a silicone softener compound of tissue and at least one protein or a derivative of yours.

The document WO-A-00/40687 describes a fabric softener of tissues that includes an active cationic softener, a protein Water soluble, a substantive thickener for tissue fiber, a fabric and water softener silicone.

The object of the present invention is provide a fabric conditioning composition that provides not only excellent advantages as fabric softener, but also protects the fabrics, especially those of wool, from felting process. Felting is the process in which fibers, especially wool fibers, become completely entangled. In particular, this can be a problem with the use of "water soapy "hot or warm during the washing process, which Open and extend the structure of the wool fiber. When the wool fibers cool in the rinse cycle, this can block the structure of the fiber in a tangled state. Clearly, a product that can protect against felting, especially in the rinse cycle, it has a very advantage important to help garments retain their size and original finish.

Such compositions preferably have a medium to high viscosity (by this expression we mean a viscosity of 50 to 50,000 cps, preferably 100 to 1,500 cps, measured using a Brookfield LVT axis number 2 viscometer at 12 rpm and at 20 ° C).

The present invention can be used suitable for fabrics comprising natural fibers and / or man-made synthetics. Such fibers may consist of proteins (for example wool, silk), cellulose (for example linen, cotton, jute), regenerated cellulose (for example, viscose, lyocell), a cellulose derivative (for example acetate, triacetate), a Acrylic, a polyamide or a polyester. Many tissues will contain two or more such types of fibers. The compositions of the present invention are preferably used for woolen fabrics or with wool blend.

As the first feature of the invention We present a composition that includes:

to)

a active cationic tissue softener in an amount of 3 to 45%, in weigh;

b)

from 0.1% to 20%, by weight, of a water soluble protein or of a chemically modified derivative;

C)

from 0.01% to 10%, by weight, of a thickener that is substantive for tissue fiber, wherein the thickener is a derivative of a carbohydrate;

d)

from 0.1% to 15% of a fabric softener silicone; Y

and)

Water.

Cationic fabric softener

An active cationic tissue softener is a essential ingredient of the invention. The typical levels of it Within the compositions they vary from 3 to 45%, preferably from 4 at 20%, ideally from 4 to 15%, by weight of the composition.

Softening assets of cationic tissues Typical, preferred, include ammonium fabric softeners water dispersible quaternary or amine precursors of same.

Preferred quaternary ammonium compounds in this document they have the formula (I) or the (Ia), and include their mixtures:

[R '- (CO) -O-R-N + (- R' ') (- (RO) n H) (- R-O- (CO) -R'] X -}

(I)

[R '- (CO) -NH-RN + (- R 1) (- (RO) n H) (- R-NH- (CO) -R')] X ^ {-}

(Ia)

in which:

R is an alkylene or alkenylene group that has from 2 to 4 carbon atoms;

R 'is an alkyl or alkenyl group having 8 to 22 carbon atoms;

n is an integer that has a value of 1 to 4;

R '' is an alkyl group having between 1 and 4 carbon atoms;

R1 is an alkyl group having between 1 and 4 carbon or hydrogen atoms; Y

X - is an anion compatible with the softener.

Non-limiting examples of compatible anions with the softener (X -) are chloride, formate, nitrate, sulfate or alkyl sulfate of 1 to 4 carbon atoms, preferably Methylsulfate

Ideally, the alkyl or alkenyl group R 'should contain at least 10 carbon atoms, preferably at least 14 carbon atoms and more preferably at least 16 atoms of carbon. The group can be linear or branched.

Unsaturated fatty acids and acids partially hydrogenated fatty acids derived from vegetable oils are adequate and relatively cheap sources of alkyl material and long chain alkenyl. Among the preferred compounds in the that R 'represents these mixtures of long chain materials are include (although the list is not limited to them): seed oil of rapeseed, canola oil, peanut oil and sunflower oil.  A preferred non-vegetable source of R 'groups is tallow.

A specific example of ammonium compounds Quaternary suitable for use in the invention is

di- (sebocarboxyethyl) hydroxyethylmethylammonium X <->.

The anion compatible with the softener (X -) is present simply as a counterion of the ammonium compound positively charged quaternary. The nature of the counterion anionic is not critical at all for the practice of the present invention. The scope of this invention is not considered limited by The specific type of anion. The expression "amine precursors yours "refers to the secondary or tertiary amines of the corresponding quaternary ammonium compounds previously cited, said amines being substantially protonated in the compositions due to the pH values of the composition.

As cosuavizante ingredients can be added together with the cationic fabric softener one or more of the following ingredients, in total proportions of up to 20%, 10% or 5% by weight of the composition:

i.

fatty aminated compound;

ii.

fatty amidated compound;

iii.

fatty acids;

iv.

fatty alcohols

Thickener

The thickener is a chemical derivative of a carbohydrate.

The thickener is present in the composition in amounts of 0.01% to 10%, preferably 0.05% to 8% and even more preferably from 0.1% to 5%, by weight. The thickener is part noun of the fiber of the tissue being treated; this means that the thickener is associated with the fiber of the treated tissue, remaining, at least in part, on the fiber after rinse and drying. It will be noted that the thickener chosen will not be noun necessarily for all possible types of fibers of fabrics, especially synthetic fibers. It is preferred that the thickener chosen be one that is substantive for fibers natural, especially for cotton or wool. Therefore the Thickener is positively charged to the pH of the composition.

Examples of chemical carbohydrate derivatives they are water soluble polymers.

"Soluble in water" means here that the thickener is mostly (more than 90%) in the phase aqueous instead of the fatty phase of the composition at 25 ° C.

Modified polymers are preferred cationically Especially interesting are those derived from quaternary carbohydrate ammonium, especially chitins and guar gums, such as quaternary ammonium guar gums. Between the Preferred derivatives include those modified with a group cationic, which can also be modified first with a nonionic group. A preferred cationic group is quaternary ammonium, Ideally chosen from one of the following:

[N (R1) (R2) (R3) (R4)] + X -

       \ newpage
    

where R1 is an alkyl group of 1 to 6 monohydroxylated or polyhydroxylated carbon atoms; R2 and R3 are, independently, alkyl groups of 1 to 6 carbon atoms; R4 is an alkyl group of 1 to 24 carbon atoms; and X - is a counterion, as previously defined in the text.

In WO9818828 methods are described to obtain such carbohydrate derivatives.

Representative types include glycogen, gum or chitin polysaccharides containing groups ammonium.

Proteins or derivatives chemically modified

They are present in the formulation in quantities from 0.1% to 20%, preferably from 0.15% to 15% and even more preferably from 0.2% to 10%, by weight. The composition includes less a type of water soluble protein or modified derivative chemically Protein can be derived from animal sources or Vegetables or proceed from fermentation. Ideally, protein is not an enzyme. Preferably, the protein has been denatured. He term protein is used to include both natural proteins such as hydrolyzed proteins that comprise proteins proper and polypeptides, peptides and peptones (the latter can be categorized as hydrolyzed proteins). Preferably, the protein source is chosen from: wheat, cotton, silk, keratin, collagen, elastin, casein and soy.

"Soluble in water" means here that the material is mostly (more than 90%) in the phase aqueous instead of the fatty phase of the composition at 25 ° C.

Among the preferred chemical modifications to produce the derivatives include: esterification or etherification of hydroxy or carboxy groups; acylation of amino groups; quaternization of the amino groups or covalent bond with the amino groups of the protein.

The Mw of the protein or derivatives chemically modified is preferably between 500 and 500,000 Daltons, ideally between 1,000 and 20,000 Daltons.

Preferred derivatives are derivatives alkyl quaternaries or silicon derivatives.

Examples of quaternary ammonium derivatives that may be useful in the present invention include quaternary ammonium derivatives of wheat protein, keratin, silk, elastin and collagen, including as starting materials natural materials per se , natural materials that have been hydrolyzed, chemically modified and completely synthetic materials.

Among the preferred protein derivatives is it so:

Get ouf of hydrolyzed protein cocodimethylammonium;

Get ouf of protein cocodimethylammonium;

Get ouf of hydrolyzed protein lauryl dimethyl ammonium;

Get ouf of protein lauryl dimethyl ammonium;

Get ouf of hydrolyzed protein stearyldimethylammonium;

Get ouf of protein stearyl dimethyl ammonium;

Get ouf of hydrolyzed protein stearyldimethylammonium;

Get ouf of stearyldimonylpropyl (or hydroxypropyl) protein and

condensate of a polyfunctional silicone and protein or a protein hydrolyzed

Preferred silicone derivatives are those Examples described in EP0S403S7 and US5679819.

Fabric softener silicone

A preferred feature of the invention is the addition of a fabric softener silicone, preferably a compound based on aminosilicones or methicones, present in the formulation in an amount of 0.1% to 15%, preferably 0.2% at 10% and even more preferably from 0.3% to 8%, by weight.

In industrial practice, the term "silicone" has become a generic term that encompasses several relatively high molecular weight polymers containing siloxane units and hydrocarbon radicals of various types. The use of silicones to soften the tissues, that is to say to provide lubrication between the fibers and threads, so that they move with each other more easily, has been well known for quite some time. The use of organomodified silicones for textile treatments has been well documented over the years (see United States Patents numbers: 4,620,878, Gee, issued on November 4, 1986; 4,705,704, Lane et al ., issued on November 10, 1987; 4,800,026, Coffindaffer et al ., issued on January 24, 1989; 4,824,877, Glover et al ., issued on April 25, 1989; and 4,824,890, Glover et al. ., issued on April 25, 1989). Generally, silicones of this type are provided to textiles in the form of an aqueous emulsion, either as a macroemulsion or as a microemulsion.

Preferred fabric softening silicones They are those of formula:

one

wherein each R1, R2, R 3, R 5, R 6, and R 7 are chosen, so independent between the groups: phenyl, alkyl of 1 to 6 atoms of carbon, primary, secondary, tertiary or quaternary amine, polyether, alkenyl of 2 to 4 carbon atoms, hydrogen, hydroxy e hydroxyalkyl of 2 to 4 atoms of carbon;

R 4 is -R 9 -NH-CH 2 CH 2 -NH 2; R9 is an alkylene group of 3 to 6 carbon atoms and, more preferably, a propyl, isopropyl or isobutyl group;

R 8 is an alkyl group of 1 to 6 atoms of carbon, ethylene oxide, propylene oxide or a mixture of they

and where x and y can be any number, provided that Mw is between 200 and 20,000.

Such compounds can be synthesized as indicates in the article "Syntheses and Reactions of Uniform Size Poly (Dimethylsiloxane) with Various Reactive End Groups " Polymer Journal Vol. 19, No. 9, pp 1091-1100, published on March 26, 1987.

The silicone can have any structure that provide one or more of the desired advantages when used in the fabric softener formulation. Preferably, the silicone it is linear, but it can also be cyclic, such as cyclomethicones

A preferred class of silicones are the methicones (methylsiloxane), preferably di or trimethicones, and its derivatives, such as amodimethicone.

Preferably, the silicone is emulsified with one or more surfactants, such as a nonionic surfactant. Preferably, the silicone is preemulsified before adding it to the composition.

In the final product, the proportion by weight between the total fabric softening agent and the total silicone Fabric softener is 1: 1 to 50: 1, more preferably 1.2: 1 at 20: 1, more preferably from 1.5: 1 to 10: 1.

       \ vskip1.000000 \ baselineskip
    

Water

Preferably, deionized water is used. The Preferred amounts of water are "to complete." Preferably, there is at least 50%, 60%, 70% or 80%, by weight, of Water.

       \ vskip1.000000 \ baselineskip
    

pH

For fabric softening agents precedents, especially in the case of tissue agents biodegradable softeners, the pH of the liquid compositions is a preferred parameter of the present invention. In fact, it influences in the stability of quaternary ammonium compounds, especially in prolonged storage conditions. According defined in the present context, the pH is measured in the composition net at 20 ° C. For the optimal hydrolytic stability of these compositions, the net pH, measured in the conditions pre-listed, must be in the range of 2 to 5. The pH of these compositions mentioned here can be regulated by adding a Bronsted acid.

Among the examples of suitable acids for adjust the pH of the composition include mineral acids inorganic and carboxylic acids, in particular acids low molecular weight carboxylic acids (from 1 to 5 carbon atoms). Suitable inorganic acids are HCl, H 2 SO 4, HNO 3 and H_ {3} PO_ {4}. Suitable organic acids include formic, acetic, citric, tartaric acids. Acids Preferred are citric, hydrochloric, phosphoric, formic acids and benzoic.

Fragrance

The products of the present invention can also contain from 0% to 10%, preferably from 0.1% to 5%, more preferably 0.2 to 4%, by weight of the finished composition, of fragrance. Generally, fabric softener products contain perfume to provide an olfactory aesthetic advantage and / or to serve as a signal that the product is effective.

       \ vskip1.000000 \ baselineskip
    

Stabilizers

Optionally, they can also be added stabilizers When used, said stabilizer will help achieve the desired viscosity for the finished product as well how to stabilize the finished product along the storage. Generally, stabilizers are chosen from inorganic sulphites, cationic surfactants with a single chain long alkyl, nonionic alkoxylated surfactants, oxides of amines, fatty acids and their mixtures; typically, they are used at a level from 0 to 15% by weight of the composition.

       \ vskip1.000000 \ baselineskip
    

Electrolytic stabilizers

The compositions of the present invention include they can also optionally incorporate control agents of the inorganic viscosity that can also act as stabilizers or increase its effect; they include ionizable salts water soluble

A wide variety of salts can be used. ionizable. Examples of suitable salts are the halides of the metals of groups IA and IIA of the periodic table of elements; for example, calcium chloride, magnesium chloride, sodium chloride, potassium bromide and lithium chloride. Salts Ionizable are especially useful during the mixing process of the ingredients to obtain the compositions described in this memory and then to obtain the desired viscosity. The amount of ionizable salts used depends on the amount of ingredients assets used in the compositions and can be adjusted according to formulator wishes. Typical levels of salts used to control the viscosity of the composition vary from 20 to 2000 parts  per million (ppm), preferably 20 to 1100 ppm, by weight of the composition.

In addition to water-soluble ionizable salts previously mentioned, or instead, can be incorporated into the alkylenepolyammonium salts composition to provide control of viscosity In addition, these agents can act as "cleaners", forming ionic pairs with the detergent anionic transmitted from the main wash, in the rinse and over the tissues, and can improve the softness result. These agents can stabilize the viscosity in a range of wider temperature, especially at low temperatures, compared to inorganic electrolytes.

Specific examples of salts of alkylenepolyammonium are 1-lysine monohydrochloride and dihydrochloride 1,5-diamonium-2-methylpentane.

       \ vskip1.000000 \ baselineskip
    

Optional components

The composition may also contain one or more optional components routinely included in the tissue conditioning compositions such as: concentration aid for surfactants, emulsifiers, dyes, preservatives, optical brighteners, agents defoamers, chelating agents, natural extracts and / or synthetic agents for fluorescence, hydrotropes, agents anti-redeposition, clothing anti-shrinking agents, agents anti-wrinkles, anti-stain agents, anti-corrosion agents, agents that  provide coverage, antistatic agents, aid agents for ironing and blending of all of them.

Ideally, the number of optional agents that can be included in the composition is less than 15%, ideally less than 3%, by weight.

       \ vskip1.000000 \ baselineskip
    

Solvent

Preferably, any solvent used it is a water soluble or water miscible solvent, low weight molecular, preferably with MW <350, ideally with less than 200 MW The solvent can be a chosen organic solvent between lower alcohols such as ethanol, propanol, isopropanol or butanol; Other low molecular weight alcohols include monoalcohols, dialcohols (such as glycol), trialcohols (such as glycerol) or polyols.

Also, the solvent may have the formula next:

R 1 -O- [CH 2 -CH (R) - (CH 2) a -O] n -H

in the that:

a is 0 or 1

n is an integer from 1 to 5

R is independently chosen from H or CH_ {3}

R 1 is H, a linear or branched radical C m H 2m + 1, (where m is an integer from 1 to 15, preferably from 1 to 10) or 2 .

The solvent can also be a fatty ester, as isopropyl myristate or isopropyl palmitate.

Preferred solvents (not limiting), used at levels of 5% to 15% by weight of the total composition, are the following:

propilen, dipropylene or tripropylene glycol;

propilen, dipropylene or tripropylene glycol ether;

ethylene or propylene glycolenyl ether; diethylene glycol monobutyl ether;

propylene glycol monobutyl ether;

butylene glycol; hexylene glycol; isopropanol; ethanol; myristat of isopropyl;

palmitate isopropyl

       \ vskip1.000000 \ baselineskip
    

Antifoaming agents

The compositions of the present invention optionally comprise approximately 0% to about 0.5%, preferably about 0.01% at about 0.4%, more preferably about 0.05% to about 0.2% by weight of the composition of an agent silicone antifoam. The amount of the antifoaming agent siliconing is additional to the presence of any silicone fabric softener added to the composition.

The antifoam component of this invention comprises a silicone. Silicone materials employed as antifoaming agents in this invention may be alkylated polysiloxane substances of various types, either individually or combined with various solid materials such as aerogels and xerogels of silica and hydrophobic silicas of different classes.

       \ vskip1.000000 \ baselineskip
    

Product use

The present invention also encompasses a method for treating fabrics, especially wool fabrics or with a mixture of wool, comprising the step of contacting said tissues in a rinse cycle of a laundry machine with a medium aqueous containing a composition as previously defined in the text. Preferably, the aqueous medium is at a temperature between 2 and 40 ° C, more preferably between 5 and 25 ° C.

The present invention also includes the use of a composition as previously defined in the text in the prevention of felting woolen or woolen fabrics during the rinse cycle of a washing process of the tissue.

The invention is illustrated in the following Example non-limiting, in which all the percentages given are about the basis of the percentage by weight of assets, unless indicated another thing.

       \ newpage
    

Example TABLE 1 Sample Formulas

3

\hskip0.5cm

N.B. Los Ejemplos 1, 2, 4, 6 y 7 están fuera del alcance de la invención y son ejemplos para comparación.

 \ hskip0.5cm 

NB Examples 1, 2, 4, 6 and 7 are outside the scope of the invention and are examples for comparison.

one

Esterquat 18 supplied by Undessa SA.

2

Jaguar C14S supplied by Rhodia.

3

Coltide Cotton supplied by Croda Colloids Ltd.

4

Coltide HQS (wheat protein) supplied by Croda Colloids Ltd.

5

2-8035 DC silicone supplied by Dow Corning.

6

HV495 silicone supplied by Dow Corning

7

Coltide Cotton supplied by Croda Colloids Ltd.

8

Flosoft supplied by SNF.

The viscosity was between 100 and 1,500 cps (a 20 ° C) with an axis 2 at 12 rpm in a Brookfield LVT viscometer.

       \ vskip1.000000 \ baselineskip
    

Evaluation

The tissues used for the evaluation of softness and felting were:

pure fabric 100% pastel wool (thick wool, knitted samples)

pure fabric 100% pastel wool (thick wool, knitted samples)

silk fabric 100% pure colorless

mixing fabric 30:70 silk and wool.

Typically, four samples of each were used tissue, each of them for evaluation after three, five, ten, fifteen and twenty repeated cycles of washing and rinsing.

       \ vskip1.000000 \ baselineskip
    

Process Test conditions set

Four machines are used for the test washing machines of the same model. The test conditions described are check before starting the test for each of the four washing machines During rehearsals, towels are changed from some machines to others, so that each product is used also in each of the four washing machines. In this way, all The test samples undergo the same treatment.

Washed

The washing machines are loaded with test samples and ballast, paying attention to using the same Procedure for all products. The detergent is added from the normal form, according to labeling instructions. He Tissue conditioner tested is added in the cycle of cleared up.

Once the wash cycles have been completed and clarified, the test samples are dried in line. The others test samples that suffer more than one wash are dried online between each wash cycle before evaluations.

Evaluation

For test samples that experience more of an evaluation class, the order must be as follows: instrumental evaluation, visual evaluation and, finally, touch of tissue.

Softness assessment

The evaluation of softness (tissue touch) It is done through a test with a jury. A jury was used of at least five trained technicians. Softness assessments are carried out after three, five, ten, fifteen and twenty repeated wash cycles.

For each tissue, the samples washed with the various test products, using One of the products as reference product, according to the following scale:

0

reference product

one

very small difference

2

noticeable difference

3

clear difference

4

remarkable difference

+

positive (better than the product of reference)

-

worst than the reference product.

Shrink Evaluation

It is tested according to the Woolmark TM test method 628, September 1999 version. The shrinkage level is measured after three, five, ten, fifteen and twenty repeated wash cycles. For measurements, each wool test sample is soaked IWS for one hour, in the steel tray with a centimeter of cold tap water; then still in the water, they are taken the length and width measurements.

The degree of shrinking is calculated as% of surface area reduction:

% \ reduction = 100 \ times \ {(L_ {uw} -L_ {w}) \ times (W_ {uw} - W_ {w}) \} / (L_ {uw} \ times W_ {uw})

where:

L_ {uw} = unwashed sample length

L_ {w} = length of the sample washed

W_ {uw} = width of the unwashed sample

W_ {w} = width of the washed sample.

Felting Evaluation

The degree of felting is measured by means of a Jury test.

To obtain reliable results, a jury of at least five trained technicians. They were compared samples washed with each other, using as reference the corresponding sample of unwashed tissue, according to the scale next:

one

how the reference (unwashed fabric)

2

very small difference

3

noticeable difference

4

clear difference

5

remarkable difference.

The results of the jury are treated according to the Kramer method, DIN 44983 part 50.

Claims (17)

1. A composition comprising:

to)

a active cationic tissue softener in an amount of 3 to 45%, in weigh;

b)

from 0.1% to 20%, by weight, of a water soluble protein or of a chemically modified derivative;

C)

from 0.01% to 10%, by weight, of a thickener that is substantive for fibers of a tissue, the thickener being a chemical derivative of a carbohydrate;

d)

from 0.1% to 15% of a fabric softener silicone; Y

and)

Water.

2. A composition according to claim 1, in which the cationic tissue softener active is a compound of formula (1) or (Ia), or a mixture thereof;

[R '- (CO) -O-R-N + (- R' ') (- (RO) n H) (- R-O- (CO) -R'] X -}

(I)

[R '- (CO) -NH-RN + (- R 1) (- (RO) n H) (- R-NH- (CO) -R')] X ^ {-}

(Ia)

in which: R is an alkylene or alkenylene group that has from 2 to 4 carbon atoms; R 'is an alkyl or alkenyl group having 8 to 22 carbon atoms; n is an integer that has a value of 1 to 4; R '' is an alkyl group having between 1 and 4 carbon atoms; R1 is an alkyl group having between 1 and 4 carbon or hydrogen atoms; Y X - is an anion compatible with the softener. 3. A composition according to claims 1 or 2, which contains 4 to 20% by weight of softener active agent of cationic tissues. 4. A composition according to claim 3, containing 4 to 15% by weight of fabric softener active cationic 5. A composition according to any one of the claims 1 to 3, which contains a thickener that is a water soluble polymer. 6. A composition according to any one of the claims 1 to 5, containing from 0.1% to 5% by weight of protein or a derivative of yours, in which the protein source is Choose between: wheat, cotton, silk, keratin, collagen, elastin, Casein and soy. 7. A composition according to any one of the claims 1 to 6, wherein the fabric softener silicone It is a compound based on an aminosilicone or a methicone. 8. A composition according to any one of the preceding claims, wherein the rest of the composition is water. 9. A composition according to claim 2, wherein the cationic tissue softener active is di- (sebocarboxy-
ethyl) hydroxyethylmethylammonium X -. 10. A composition according to any one of the preceding claims, wherein the composition comprises additionally one or more of the following ingredients cosuavizers:

i.

fatty aminated compound;

ii.

fatty amidated compound;

iii.

fatty acid;

iv.

fatty alcohol

11. A composition according to claim 10, in which the total amount of ingredient or ingredients Cosuavizers is a maximum of 20% by weight of the composition. 12. A composition according to any one of the preceding claims, wherein the chemical derivative of the Carbohydrate is one that has been cationically modified. 13. A composition according to claim 12, in which the carbohydrate is guar gum. 14. A composition according to claim 12, in which the carbohydrate is modified with a cationic group chosen from: primary amino groups, secondary amino, amino tertiary, quaternary ammonium, sulfonium or phosphonium. 15. A composition according to claim 14, in which the carbohydrate is modified with a cationic group of formula: [N (R1) (R2) (R3) (R4)] + X - wherein R1 is an alkyl group of 1 to 6 carbon atoms monohydroxylated or polyhydroxylated; R2 and R3 they are, independently, alkyl groups of 1 to 6 atoms of carbon; R4 is an alkyl group of 1 to 24 carbon atoms; Y X - is a counterion 16. A method for treating tissues, especially Wool fabrics or wool blend, comprising the stage of contacting said tissues in a rinse cycle of a tissue washing machine with an aqueous medium containing a composition as defined in any one of claims 1 to 15. 17. Use of a composition as defined in any claim from 1 to 15 in the prevention of felting of woolen fabrics or wool blend during the cycle of rinsing of a tissue washing process.