EP1360364B1 - Use of non-ionic polysaccharides in a composition for textile care - Google Patents

Abstract

The invention concerns the use, in a composition for textile care in aqueous or wet medium, of a non-ionic polysaccharide whereof the native skeleton is formed of a main chain comprising similar or different anhydrohexose units, and branches including at least an anhydropentose and/or anhydrohexose unit. The anhydrohexose and/or anhydropentose units of the native skeleton being modified by at least a non-ionic group. The composition is designed for washing and/or rinsing and/or softening, prespotting textile articles, drying wet clothes in a dryer or for facilitating ironing.

Description

The subject of the present invention is the use, in a composition for the care of articles made of textile fibers ("textile care"), in particular made of cotton, colored in particular, of at least one nonionic polysaccharide, as agent to prevent the degradation of these articles, to protect the colors of said articles and / or to provide them with anti-crease and / or softening properties.

It is of interest, especially during washing or rinsing operations, to protect articles made of textile fibers, especially linen, with respect to physical or chemical degradation phenomena (in particular to protect the colors of colored articles). and / or to provide them with benefits such as softening and / or anti-crease properties.
Cleaning the machine laundry leads to physical and chemical degradation of the fibers and especially cotton fibers. The alkalinity delivered by the detergents as well as certain specific compounds such as the oxidizing substances (perborate, percarbonate) or certain enzymes can be at the origin of the chemical degradation of the cotton fibers. But it is usually the conjunction of chemical and mechanical actions that leads to fiber degradation. The mechanical action is produced during washing, rinsing, spinning or drying, when this takes place in a tumble dryer. This degradation of the fibers leads to the formation of fibrils on the surface of the textile which finally gives a loss of brightness of the colored textiles. This degradation also induces a decrease in the resistance of the textile which has the extreme can lead to tearing of the tissues. This degradation of textiles can be evaluated quantitatively either by a loss of colors of colored textiles or by a decrease in the breaking energy of the textile. It is usually necessary to carry out 10 to 20 cumulative machine washes to perceive this type of degradation.
Machine washing machine washing that systematically involves a spin operation also leads to a crumpled cloth that is accented during the drying, in particular by the formation of inter-fiber hydrogen bonds. An ironing operation is therefore necessary to obtain a presentable appearance of the laundry.
In order to reduce fiber degradation during washing or rinsing, suppliers of chemicals or detergents have made changes to detergent formulas or the use of certain specific additives.
In particular, detergents which do not comprise an oxidizing system, but which have diminished cleaning capacities, may be mentioned in particular.
Silicone compounds have also been used and in particular amino silicones ( US Patent 4,585,563 ; WO 92/07927 ; WO 98/39401 ).

WO98 / 39401 discloses in particular the use of aminosilicone-type compounds as a softening and color-protecting agent in compositions for washing textiles in an aqueous medium.

JP 03 131695 A discloses the use, in a detergent composition for the care of textiles in an aqueous or wet medium, of a (poly) oxyalkylene, methyl or (poly) oxyalkylene methyl derivative of guar gum or starch, as anti-redeposition agent especially oils.

It is known to use hydroxypropyl guar as a thickening agent in liquid textile detergent compositions ( JP 11 335698 A ).

The Applicant has found that the use, in compositions for the treatment of textile articles especially cotton-based, colored in particular, certain non-ionic polysaccharides bearing hydrophobic substituents, soluble in the conditions of use (" Working conditions ") in aqueous or wet medium of said compositions, avoided the degradation of these articles, allowed to protect colors and / or provided them with anti-crease and / or softening properties.
Such compositions may especially be compositions for washing and / or rinsing and / or softening articles made of textile fibers, for detaching articles made of pre-washing textile fibers ("prespotting"), for drying articles in textile fibers in tumble dryers or to facilitate the ironing of textile fiber articles.

• * d'une chaîne principale comprenant des unités anhydrohexoses semblables ou différentes
• * et de ramifications comprenant au moins une unité anhydropentose et/ou anhydrohexose

les unités anhydrohexoses et/ou anhydropentoses du squelette natif étant modifiées par au moins un groupe non-ionique,
le taux de modification MS des unités anhydrohexoses et/ou anhydropentoses par ledit ou lesdits groupes non-ionique(s) étant d'au moins 0,001, de préférence d'au moins 0,01 ,
comme agent permettant d'éviter la dégradation desdits articles et de protéger les couleurs desdits articles et/ou d'apporter à ceux-ci des propriétés d'antifroissage et/ou d'adoucissage.A first object of the invention consists in the use, in a composition for the care of textile fiber articles in an aqueous or wet medium, of at least one nonionic polysaccharide soluble in the conditions of use of said composition, polysaccharide whose native skeleton is formed

• * a main chain comprising similar or different anhydrohexose units
• * and branches comprising at least one anhydropentose and / or anhydrohexose unit

the anhydrohexose and / or anhydropentose units of the native skeleton being modified by at least one nonionic group,
the MS modification rate of the anhydrohexose and / or anhydropentose units by said at least one nonionic group (s) being at least 0.001, preferably at least 0.01,
as an agent to prevent the degradation of said articles and to protect the colors of said articles and / or to provide them with anti-crease and / or softening properties.

The viscosity of an aqueous solution containing 1% by weight of said nonionic polysaccharides, measured at 25 ° C using a Brookfield viscometer at 20 rpm, may preferably range from 200 to 5000 mPa.s.

The modification rate MS is expressed as the average number of moles of precursor of the nonionic modifying group reacted per anhydrohexose unit and / or anhydropentose unit.
The modification rate MS may vary according to the nature of the precursor of said modifying group.
If said precursor is not capable of forming new reactive hydroxyl groups (alkylation precursor for example), the rate of modification by the nonionic groups is less than 3 by definition.
If said precursor is capable of forming new reactive hydroxyl groups (hydroxyalkylation precursor for example), the modification rate MS is theoretically not limited; it can for example go up to 6, preferably up to 2.

The said nonionic groups are bonded to the carbon atoms of the sugar skeleton either directly or via -O- bonds.

• -[-CH₂-CH(R)-O]_x-R¹ où
  R est un atome d'hydrogène ou radical alkyle contenant de 1 à 4 atomes de carbone
  x est un nombre entier allant de 0 à 6
  R¹ représente
  • un atome d'hydrogène quand x est différent de 0
  • un radical alkyle contenant de 1 à 22 atomes de carbone éventuellement interrompu par un ou plusieurs hétéroatome oxygène et/ou azote, cycloalkyle, aryle, arylalkyle, contenant de 6 à 12 atomes de carbone
  • un radical -(CH₂)_y-COOR²
  • un radical -(CH₂)_y-CN
  • un radical -(CH₂)_y-CONHR²
  R² représentant un radical alkyle, aryle ou arylalkyle contenant de 1 à 22 atomes de carbone,
  et y est un nombre entier allant de 0 à 5
• -CO-NH-R¹ lié à un atome de carbone du squelette sucre par l'intermédiaire d'une liaison -O-, avec R¹ ayant la définition donnée ci-dessus.

Among the nonionic groups, mention may be made of those of formula:

• - [- CH ₂ -CH (R) -O] _x -R ¹ where
  R is a hydrogen atom or an alkyl radical containing from 1 to 4 carbon atoms
  x is an integer from 0 to 6
  R ¹ represents
  • a hydrogen atom when x is different from 0
  • an alkyl radical containing from 1 to 22 carbon atoms optionally interrupted by one or more heteroatom oxygen and / or nitrogen, cycloalkyl, aryl, arylalkyl, containing from 6 to 12 carbon atoms
  • a radical - (CH ₂ ) _y -COOR ²
  • a radical - (CH ₂ ) _y -CN
  • a radical - (CH ₂ ) _y -CONHR ²
  R ² represents an alkyl, aryl or arylalkyl radical containing from 1 to 22 carbon atoms,
  and y is an integer from 0 to 5
• -CO-NH-R ¹ bonded to a carbon atom of the sugar backbone via a bond -O-, with R ¹ having the definition given above.

• . méthyle, éthyle, propyle, isopropyle, butyle, hexyle, octyle, dodécyle, octadécyle, phényle, benzyle, liés à un atome de carbone du squelette sucre par l'intermédiaire d'une liaison éther, ester, amide ou uréthane,
• . cyanoéthyle, hydroxyéthyle, hydroxypropyle, hydroxybutyle, liés à un atome de carbone du squelette sucre par l'intermédiaire d'une liaison -O-.

We can particularly mention the groupings

• . methyl, ethyl, propyl, isopropyl, butyl, hexyl, octyl, dodecyl, octadecyl, phenyl, benzyl, bonded to a carbon atom of the sugar backbone via an ether, ester, amide or urethane bond,
• . cyanoethyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, bonded to a carbon atom of the sugar backbone through a -O- bond.

The hexose units (similar or different) of the main backbone of the native skeleton can be D-glucose, D-or L-galactose, D-mannose, D- or L-fucose, L-rhamnose, etc.

The pentose and / or hexose units (similar or different) of the native backbone branches may be D-xylose ..., L- or D-arabinose, D-glucose, D- or L-galactose, D-mannose, D- or L-fucose, L-rhamnose ...

As examples of native skeleton, there may be mentioned galactomannans, galactoglucomannans, xyloglucans, scleroglucannes ...

In a preferred manner, the native skeleton is a galactomannan. Galactomannans are macromolecules comprising a main chain of β (1-4) -linked D-mannopyranose units substituted with D-galactopyranose units in the α (1-6) position. Among these, there may be mentioned gums guar, carob, tara. Most preferably, the native skeleton is a guar gum. Guar gums have a mannose / galactose ratio of 2.

The nonionic polysaccharides according to the invention can be obtained in known manner.
These are mostly commercial products.

As examples of nonionic polysaccharides according to the invention, mention may be made of hydroxypropyl galactomannans, in particular hydroxypropyl guars.
For a good realization of the invention, these can have a modification rate of the order of 0.1 to 6, preferably of 0.1 to 1.6, especially of 0.4 to 1.2. .

A second object of the invention is a method for improving the properties of a composition for the care of textile fiber articles in an aqueous or wet medium, by adding to said composition an effective amount of at least one non-polysaccharide. -ionic according to the invention to prevent the degradation of said articles and to protect the colors of said articles and / or to provide them with anti-crease and / or softening properties.

A third object of the invention consists in a method for preventing the degradation of textile fiber articles and protecting the colors of said articles and / or providing them with anti-crease and / or softening properties, by treatment of said articles. in an aqueous or wet medium, using a composition comprising at least one nonionic polysaccharide according to the invention.

• * sous forme d'un solide (poudre, granulés, tablettes ...) ou d'une dispersion ou d'une solution aqueuse concentrée, mis en contact avec les articles à traiter, après dilution dans l'eau ;
• * sous forme d'une dispersion ou d'une solution aqueuse concentrée préalablement déposée sur les articles secs à traiter avant dilution dans l'eau ;
• * sous forme d'une dispersion ou d'une solution aqueuse à déposer directement sur les articles secs à traiter sans dilution ou d'un support solide (bâton) comprenant ledit polysaccharide non-ionique, à appliquer directement sur les articles secs à traiter ;
• * sous forme d'un support solide insoluble comprenant ledit polysaccharide non-ionique mis en contact directement avec les articles à traiter à l'état humide.

The form of the composition and the conditions of use (or treatment) can be multiple.
Said composition may occur

• * in the form of a solid (powder, granules, tablets ...) or a dispersion or a concentrated aqueous solution, brought into contact with the articles to be treated, after dilution in water;
• in the form of a dispersion or a concentrated aqueous solution previously deposited on the dry articles to be treated before dilution in water;
• * in the form of a dispersion or an aqueous solution to be deposited directly on the dry articles to be treated without dilution or of a solid support (stick) comprising said nonionic polysaccharide, to be applied directly to the dry articles to be treated;
• in the form of an insoluble solid support comprising said nonionic polysaccharide brought into direct contact with the articles to be treated in the wet state.

• une formulation détergente solide ou liquide susceptible de former directement par dilution un bain lessiviel ;
• une formulation rinçante et/ou adoucissante liquide susceptible de former directement par dilution un bain de rinçage et/ou d'adoucissage ;
• un matériau solide, textile notamment, comprenant ledit polysaccharide non-ionique, destiné à être mis en contact avec les articles humides dans un sèche-linge (ledit matériau solide est appelé ci-après "additif de séchage") ;
• une formulation aqueuse de repassage ;
• un additif de lavage ("prespotter") destiné à être déposé sur les articles secs préalablement à une opération de lavage à l'aide d'une formulation détergente contenant ou ne contenant pas ledit polysaccharide non-ionique (ledit additif est appelé ci-après "additif de lavage").

Thus the composition of the invention can be:

• a solid or liquid detergent formulation capable of forming a washing bath directly by dilution;
• a liquid rinse and / or softening formulation capable of directly forming a rinsing and / or softening bath by dilution;
• a solid material, especially textile, comprising said nonionic polysaccharide, intended to be brought into contact with the wet articles in a tumble dryer (said solid material is hereinafter referred to as "drying additive");
• an aqueous ironing formulation;
• a washing additive ("prespotter") intended to be deposited on dry articles prior to a washing operation using a detergent formulation containing or not containing said nonionic polysaccharide (said additive is hereinafter called "washing additive").

The composition of the invention is particularly well suited to the care of articles (linen) in particular cotton-based, in particular containing at least 35% cotton. It is particularly adapted to the care of colored articles.

The nonionic polysaccharides according to the invention are soluble under the conditions of use ("working conditions") in an aqueous or wet medium of said composition.
Said nonionic polysaccharides are considered soluble when more than 50%, preferably more than 70% of their weight are soluble in the aqueous or wet medium of use of the composition of the invention, that is to say especially in the conditions of temperature and pH of said medium.

• d'une formulation détergente, le pH du bain lessiviel est généralement de l'ordre 7 à 11, préférentiellement de 8 à 10,5 ;
• d'une formulation rinçante et/ou adoucissante, le pH du bain de rinçage et/ou d'adoucissage est généralement de l'ordre 2 à 8 ;
• d'un additif de séchage, le pH à considérer est celui de l'eau résiduelle, qui peut être de l'ordre 2 à 9 ;
• d'une formulation aqueuse de repassage, le pH de ladite formulation est généralement de l'ordre 5 à 9 ;
• d'un additif de lavage ("prespotter"), le pH à considérer est celui du pH du bain lessiviel de l'opération suivante de lavage, à savoir de l'ordre 7 à 11, préférentiellement de 8 à 10,5.

The pH of use of the composition of the invention can range from about 2 to about 12, depending on the desired use.
As it's about

• a detergent formulation, the pH of the detergent bath is generally of the order of 7 to 11, preferably 8 to 10.5;
• of a rinsing and / or softening formulation, the pH of the rinsing and / or softening bath is generally of the order of 2 to 8;
• of a drying additive, the pH to be considered is that of the residual water, which may be of the order of 2 to 9;
• of an aqueous ironing formulation, the pH of said formulation is generally of the order of 5 to 9;
• of a washing additive ("prespotter"), the pH to be considered is that of the pH of the detergent bath of the following washing operation, namely of the order 7 to 11, preferably 8 to 10.5.

The amount of nonionic polysaccharide present in the care composition according to the invention may range from 0.05 to 10% by dry weight of said composition in dry state, and this according to the desired application.
Thus, said nonionic polysaccharide (PN) can be implemented as follows: % of (PN) (in sec) in a care composition according to the invention used as 0.05 - 5 preferably 0.1 - 3 detergent formulation 0.05 - 3 preferably 0.1 - 2 rinse and / or softening formulation 0.05 - 10 drying additive 0.05 - preferably 0.1 - 5 repa-Issage formulation 0.05 - preferably 0.1 - 5 washing additive

Other constituents may be present, in addition to the nonionic polysaccharide, in the care composition according to the invention. Said composition may contain at least one surfactant and / or a detergent and / or rinsing and / or softening additive for textile fiber articles and / or a solid support (textile in particular) of said nonionic polysaccharide.
The nature of these constituents is a function of the desired use of said composition.

• au moins un agent tensioactif naturel et/ou synthétique,
• au moins un adjuvant de détergence ("builder")
• éventuellement un agent ou un système oxydant,
• et une série d'additifs spécifiques.

Thus, when it comes to a detergent formulation, for washing textile fiber articles, it generally comprises:

• at least one natural and / or synthetic surfactant,
• at least one builder
• optionally an oxidizing agent or system,
• and a series of specific additives.

The detergent formulation may comprise surfactants in an amount corresponding to about 3 to 40% by weight, based on the detergent formulation, surfactants such as

Anionic surfactants

• alkyl ester sulphonates of formula R-CH (SO ₃ M) -COOR ', where R is an alkyl radical C _8-20, preferably C ₁₀ -C _16, R' an alkyl radical in C ₁ - C _6, preferably C ₁ -C ₃ and M an alkali metal cation (sodium, potassium, lithium), substituted or unsubstituted ammonium (methyl-, dimethyl-, trimethyl-, tetramethylammonium, dimethylpiperidinium ...) or an alkanolamine derivative ( monoethanolamine, diethanolamine, triethanolamine ...). Mention may in particular be made of methyl ester sulphonates whose R radical is C ₁₄ -C ₁₆ ;
• alkyl sulphates of formula ROSO ₃ M wherein R is alkyl or hydroxyalkyl, C ₅ -C _24, preferably C ₁₀ -C _18, M represents a hydrogen atom or a cation with the same definition as above, as well as their ethoxylenated (EO) and / or propoxylenated (PO) derivatives, having on average from 0.5 to 30 units, preferably from 0.5 to 10 EO and / or OP units;
• sulfated alkylamides of formula RCONHR'OSO ₃ M where R represents a C ₂ -C ₂₂ , preferably C ₆ -C ₂₀ , alkyl radical, R 'represents a C ₂ -C ₃ alkyl radical, M represents an atom of hydrogen or a cation of the same definition as above, as well as their ethoxylenated (EO) and / or propoxylenated (PO) derivatives, having on average from 0.5 to 60 EO and / or OP units;
• saturated or unsaturated C ₈ -C ₂₄ , preferably C ₁₄ -C ₂₀ fatty acid salts, C ₉ -C ₂₀ alkylbenzenesulfonates, primary or secondary C ₈ -C ₂₂ alkylsulfonates, alkylglycerol sulphonates, the sulfonated polycarboxylic acids described in GB-A-1 082 179, paraffin sulfonates, N-acyl N-atkyttaurates, alkylphosphates, isethionates, alkylsuccinamates, alkylsulfosuccinates, monoesters or diesters of sulfosuccinates, N-acyl sarcosinates, alkyl glycoside sulfates, polyethoxycarboxylates; the cation being an alkali metal (sodium, potassium, lithium), a substituted or unsubstituted ammonium residue (methyl-, dimethyl-, trimethyl-, tetramethylammonium, dimethylpiperidinium ...) or an alkanolamine derivative (monoethanolamine, diethanolamine, triethanolamine); ...);

Nonionic surfactants

• polyoxyalkylenated alkylphenols (polyoxyethylenated, polyoxypropylenated, polyoxybutylenated) whose alkyl substituent is C ₆ -C ₁₂ and containing from 5 to 25 oxyalkylene units; by way of example, mention may be made of the TRITON X-45, X-114, X-100 or X-102 sold by Rohm & Haas Cy. ;
• glucosamide, glucamide, glycerolamide;
• polyoxyalkylenated C ₈ -C ₂₂ aliphatic alcohols containing from 1 to 25 oxyalkylene units (oxyethylene, oxypropylene); by way of example, mention may be made of TERGITOL 15-S-9, TERGITOL 24-L-6 NMW marketed by Union Carbide Corp., NEODOL 45-9, NEODOL 23-65, NEODOL 45-7, NEODOL 45-4 marketed by Shell Chemical Cy., KYRO EOB marketed by The Procter & Gamble Cy. ;
• the products resulting from the condensation of ethylene oxide, the compound resulting from the condensation of propylene oxide with propylene glycol, such as PLURONIC marketed by BASF;
• the products resulting from the condensation of ethylene oxide, the compound resulting from the condensation of propylene oxide with ethylenediamine, such as TETRONIC marketed by BASF;
• amine oxides such as C ₁₀ -C ₁₈ alkyl dimethylamine oxides, C ₈ -C ₂₂ alkoxy ethyl dihydroxy ethylamine oxides;
• the alkylpolyglycosides described in US-A-4,565,647 ;
• C ₈ -C ₂₀ fatty acid amides;
• ethoxylated fatty acids;
• ethoxylated fatty amides;
• ethoxylated amines.

Amphoteric and zwitterionic surfactants

• alkyldimethylbetaines, alkylamidopropyldimethylbetaines, alkyltrimethylsuffobetaines, condensation products of fatty acids and protein hydrolysates;
• alkylamphoacetates or alkylamphodiacetates in which the alkyl group contains from 6 to 20 carbon atoms.

Builder builders improving the properties of surfactants can be used in amounts of about 5-50%, preferably about 5-30% by weight for liquid detergent formulations or about 10% by weight. -80%, preferably 15-50% by weight for powder detergent formulations, detergency builders such as:

Inorganic detergency builders

• . polyphosphates (tripolyphosphates, pyrophosphates, orthophosphates, hexametaphosphates) of alkali metals, ammonium or alkanolamines
• . tetraborates or borate precursors;
• . silicates, in particular those having a SiO ₂ / Na ₂ O ratio in the range of 1.6 / 1 to 3.2 / 1 and the layered silicates described in US-A-4,664,839 ;
• . alkali or alkaline earth carbonates (bicarbonates, sesquicarbonates);
• . cogranulates of hydrated alkali metal silicates and alkali metal carbonates (sodium or potassium) rich in silicon atoms in Q2 or Q3 form, described in EP-A-488,868 ;
• . crystalline or amorphous aluminosilicates of alkali metals (sodium, potassium) or ammonium, such as zeolites A, P, X, etc .; particle size zeolite A of the order of 0.1-10 micrometers is preferred.

Organic detergency additives

• . water-soluble polyphosphonates (ethane 1-hydroxy-1,1-diphosphonates, methylene diphosphonate salts ...);
• . water-soluble salts of carboxylic polymers or copolymers or their water-soluble salts such as:
  • polycarboxylate ethers (oxydisuccinic acid and its salts, monosuccinic acid tartrate and its salts, disuccinic acid tartrate and its salts);
  • hydroxypolycarboxylate ethers;
  • citric acid and its salts, mellitic acid, succinic acid and their salts;
  • salts of polyacetic acids (ethylenediaminetetraacetates, nitrilotriacetates, N- (2-hydroxyethyl) -nitrilodiacetates);
  • C5-C20 alkyl succinic acids and their salts (2-dodecenylsuccinates, lauryl succinates);
  • polyacetal carboxylic esters;
  • polyaspartic acid, polyglutamic acid and their salts;
  • polyimides derived from the polycondensation of aspartic acid and / or glutamic acid;
  • polycarboxymethyl derivatives of glutamic acid or other amino acids.

The detergent formulation may further comprise at least one oxygen-releasing bleaching agent comprising a percompound, preferably a persalt.
Said bleaching agent may be present in an amount corresponding to about 1 to 30%, preferably 4 to 20% by weight, based on the detergent formulation.

As examples of per-compounds which may be used as bleaching agents, particular mention should be made of perborates such as sodium perborate monohydrate or tetrahydrate; peroxygen compounds such as sodium carbonate peroxyhydrate, pyrophosphate peroxyhydrate, urea peroxyhydrate, sodium peroxide, sodium persulfate.

The preferred bleaching agents are sodium perborate, mono or tetrahydrate and / or sodium carbonate peroxyhydrate.

Said agents are generally associated with a bleaching activator generating in situ in the detergent medium, a peroxy carboxylic acid, in an amount corresponding to about 0.1 to 12%, preferably 0.5 to 8% by weight relative to the detergent formulation. Among these activators, mention may be made of tetraacetylethylenediamine, tetraacetylmethylenediamine, tetraacetylglycoluryl, sodium p-acetoxybenzenesulphonate, pentaacetylglucose and octaacetyllactose.

Mention may also be made of non-oxygenated bleaches acting by photoactivation in the presence of oxygen, agents such as aluminum phthalocyanines and / or sulphonated zinc.

The detergent formulation may further comprise soil release, anti-redeposition, chelant, dispersant, fluorescence, suds suppressor, softener, enzyme and other miscellaneous additives.

Anti-fouling agents

They can be used in amounts of about 0.01-10%, preferably about 0.1-5%, and more preferably of the order of 0.2-3% by weight.

• les dérivés cellulosiques tels que les hydroxyéthers de cellulose, la méthylcellulose, l'éthylcellulose, l'hydroxypropyl méthylcellulose, l'hydroxybutyl méthylcellulose ;
• les polyvinylesters greffés sur des troncs polyalkylènes tels que les polyvinylacétates greffés sur des troncs polyoxyéthylènes ( EP-A-219 048 ) ;
• les alcools polyvinyliques ;
• les copolymères polyesters à base de motifs éthylène téréphtalate et/ou propylène téréphtalate et polyoxyéthylène téréphtalate, avec un rapport molaire (nombre de motifs) éthylène téréphtalate et/ou propylène téréphtalate / (nombre de motifs) polyoxyéthylène téréphtalate de l'ordre de 1 /10 à 10/1, de préférence de l'ordre de 1/1 à 9/1, les polyoxyéthylène téréphtalates présentant des unités polyoxyéthylène ayant un poids moléculaire de l'ordre de 300 à 5000, de préférence de l'ordre de 600 à 5000 ( US-A-3 959 230 , US-A-3 893 929 , US-A-4 116 896 , US-A-4 702 857 , US-A-4 770 666 ) ;
• les oligomères polyesters sulfonés obtenus par sulfonation d'un oligomère dérivé de l'alcool allylique éthoxylé, du diméthyltéréphtalate et du 1,2-propylènediol, présentant de 1 à 4 groupes sulfonés ( US-A-4 968 451 ) ;
• les copolymères polyesters à base de motifs propylène téréphtalate et polyoxyéthylène téréphtalate et terminés par des motifs éthyles, méthyles ( US-A-4 711 730 ) ou des oligomères polyesters terminés par des groupes alkylpolyéthoxy ( US-A-4 702 857 ) ou des groupes anioniques sulfopolyéthoxy ( US-A-4 721 580 ), sulfoaroyles ( US-A-4 877 896 ) ;
• les copolymères polyesters sulfonés dérivés d'acide, anhydride ou diester téréphtalique, isophtalique et sulfoisophtalique et d'un diol ( FR-A-2 720 399 ).

Mention may be made more particularly of agents such as:

• cellulosic derivatives such as cellulose hydroxyethers, methylcellulose, ethylcellulose, hydroxypropyl methylcellulose, hydroxybutyl methylcellulose;
• polyvinyl esters grafted on polyalkylene trunks such as polyvinyl acetates grafted onto polyoxyethylene trunks ( EP-A-219 048 );
• polyvinyl alcohols;
• polyester copolymers based on ethylene terephthalate and / or propylene terephthalate and polyoxyethylene terephthalate units, with a molar ratio (number of units) of ethylene terephthalate and / or propylene terephthalate / (number of units) polyoxyethylene terephthalate of the order of 1/10 at 10/1, preferably of the order of 1/1 to 9/1, the polyoxyethylene terephthalates having polyoxyethylene units having a molecular weight of the order of 300 to 5000, preferably of the order of 600 to 5000 ( US-A-3,959,230 , US-A-3 893 929 , US-A-4,116,896 , US-A-4,702,857 , US-A-4,770,666 );
• the sulphonated polyester oligomers obtained by sulphonation of an oligomer derived from ethoxylated allyl alcohol, dimethylterephthalate and 1,2-propylene diol, having from 1 to 4 sulphonated groups ( US-A-4,968,451 );
• polyester copolymers based on propylene terephthalate and polyoxyethylene terephthalate units and terminated with ethyl, methyl units ( US-A-4,711,730 ) or polyester oligomers terminated by groups alkylpolyethoxy ( US-A-4,702,857 ) or sulfopolyethoxy anionic groups ( US-A-4,721,580 ), sulfoaroyles ( US-A-4,877,896 );
• sulfonated polyester copolymers derived from terephthalic, isophthalic and sulfoisophthalic acid, anhydride or diester and a diol ( FR-A-2,720,399 ).

Anti-redeposition agents,

They can be used in amounts generally of about 0.01-10% by weight for a powdered detergent formulation of about 0.01-5% by weight for a liquid detergent formulation.

• . les monoamines ou polyamines éthoxylées, les polymères d'amines éthoxylées ( US-A-4 597 898 , EP-A-11 984 ) ;
• . la carboxyméthylcellulose ;
• · les oligomères polyesters sulfonés obtenus par condensation de l'acide isophtalique, du sulfosuccinate de diméthyle et de diéthylène glycol ( FR-A-2 236 926 ) ;
• . les polyvinylpyrollidones.

Mention may be made in particular of agents such as:

• . ethoxylated monoamines or polyamines, polymers of ethoxylated amines ( US-A-4,597,898 , EP-A-11 984 );
• . carboxymethylcellulose;
• Sulphonated polyester oligomers obtained by condensation of isophthalic acid, dimethyl sulphosuccinate and diethylene glycol ( FR-A-2,236,926 );
• . polyvinylpyrollidones.

Chelating agents

The chelating agents of iron and magnesium may be present in amounts of the order of 0.1-10%, preferably of the order of 0.1-3% by weight.

• les aminocarboxylates tels que les éthylènediaminetétraacétates, hydroxyéthyléthylènediaminetriacétates, nitrilotriacétates ;
• les aminophosphonates tels que les nitrilotris-(méthylènephosphonates) ;
• les composés aromatiques polyfonctionnels tels que les dihydroxy-disulfobenzènes.

We can mention among others:

• aminocarboxylates such as ethylenediaminetetraacetates, hydroxyethylethylenediaminetriacetates, nitrilotriacetates;
• aminophosphonates such as nitrilotris- (methylenephosphonates);
• polyfunctional aromatic compounds such as dihydroxy disulfobenzenes.

Polymeric dispersing agents,

• . les sels hydrosolubles d'acides polycarboxyliques de masse moléculaire de l'ordre de 2000 à 100 000, obtenus par polymérisation ou copolymérisation d'acides carboxyliques éthyléniquement insaturés tels que acide acrylique, acide ou anhydride maléique, acide fumarique, acide itaconique, acide aconitique, acide mésaconique, acide citraconique, acide méthylènemalonique, et tout particulièrement les polyacrylates de masse moléculaire de l'ordre de 2 000 à 10 000 ( US-A-3 308 067 ), les copolymères d'acide arylique et d'anhydride maléique de masse moléculaire de l'ordre de 5 000 à 75 000 ( EP-A-66 915 )
• . les polyéthylèneglycols de masse moléculaire de l'ordre de 1000 à 50 000.

They may be present in an amount of about 0.1-7% by weight, to control the hardness of calcium and magnesium, agents such as

• . water-soluble salts of polycarboxylic acids with a molecular mass of the order of 2,000 to 100,000, obtained by polymerization or copolymerization of ethylenically unsaturated carboxylic acids such as acrylic acid, maleic acid or anhydride, fumaric acid, itaconic acid, aconitic acid, mesaconic acid, citraconic acid, methylenemalonic acid, and all polyacrylates with a molecular mass of the order of 2,000 to 10,000 ( US-A-3,308,067 ), copolymers of arylic acid and of maleic anhydride with a molecular mass of the order of 5,000 to 75,000 ( EP-A-66 915 )
• . polyethylene glycols of molecular weight of the order of 1000 to 50 000.

Fluorescence agents (brighteners),

They may be present in an amount of about 0.05-1.2% by weight, agents such as: stilbene derivatives, pyrazoline, coumarin, fumaric acid, cinnamic acid, azoles, methinecyanines, thiophenes ... (" The production and application of fluorescent brightening agents "- Mr. Zahradnik, published by John Wiley & Sons, New York-1982 ).

Suds suppressing agents,

• les acides gras monocarboxyliques en C₁₀-C₂₄ ou leurs sels alcalins, d'ammonium ou alcanolamines, les triglycérides d'acides gras ;
• les hydrocarbures saturés ou insaturés aliphatiques, alicycliques, aromatiques ou hétérocycliques, tels que les paraffines, les cires ;
• les N-alkylaminotriazines ;
• les monostéarylphosphates, les monostéarylalcoolphosphates ;
• les huiles ou résines polyorganosiloxanes éventuellement combinées avec des particules de silice.

They can be present in amounts of up to 5% by weight, agents such as:

• C ₁₀ -C ₂₄ monocarboxylic fatty acids or their alkali metal, ammonium or alkanolamine salts, triglycerides of fatty acids;
• saturated or unsaturated aliphatic, alicyclic, aromatic or heterocyclic hydrocarbons, such as paraffins, waxes;
• N-alkylaminotriazines;
• monostearyl phosphates, monostearyl alcohol phosphates;
• polyorganosiloxane oils or resins optionally combined with silica particles.

Softening agents

They may be present in amounts of about 0.5-10% by weight, agents such as clays.

enzymes

• les protéases, amylases, lipases, cellulases, peroxydases ( US-A-3 553 139 , US-A-4 101 457 , US-A-4 507 219 , US-A-4 261 868 ).

They may be present in an amount of up to 5 mg by weight, preferably of the order of 0.05-3 mg of active enzyme / g of detergent formulation, enzymes such as:

• proteases, amylases, lipases, cellulases, peroxidases ( US-A-3,553,139 , US-A-4,101,457 , US-A-4,507,219 , US-A-4,261,868 ).

Other additives

• des agents tampons,
• des parfums,
• des pigments.
  La formulation détergente peut être mise en oeuvre, notamment en lave-linge, à raison de 0,5g/l à 20g/l, de préférence de 2g/l à 10g/l pour réaliser des opérations de lavage à une température de l'ordre de 25 à 90 °C.

We can mention among others:

• buffering agents,
• perfumes,
• pigments.
  The detergent formulation can be used, especially in a washing machine, at a rate of 0.5 g / l to 20 g / l, preferably from 2 g / l to 10 g / l for carrying out washing operations at a temperature of 25 to 90 ° C.

• associations d'agents tensioactifs cationiques (diester de triéthanolamine quaternisé par du diméthylsulfate, N-méthylimidazoline tallow ester méthyl sulfate, chlorure de dialkyldiméthylammonium, chlorure d'alkylbenzyldiméthylammonium, sulfate de méthyle et d'alkylimidazolinium, sulfate de méthyle et de méthyl-bis(alkylamidoéthyl)-2 - hydroxyéthylammonium...) en quantité pouvant aller de 3 à 50%, de préférence de 4 à 30% de ladite formulation éventuellement associés à des tensioactifs non ioniques (alcools gras éthoxylés, alkylphénols éthoxylés ...) en quantité pouvant aller jusqu'à 3% ;
• des polyorganosiloxanes (0,1 à 10%)
• azurants optiques (0,1 à 0,2%);
• éventuellement agents anti-transfert de couleur (polyvinylpyrrolidone, polyvinyloxazolidone, polyméthacrylamide ... 0,03 à 25%, de préférence 0,1 à 15%)
• colorants,
• parfums,
• solvants, notamment des alcools (méthanol, éthanol, propanol, isopropanol, éthylèneglycol, glycérine)
• limiteurs de mousse.

A second embodiment of the care composition of the invention consists of an aqueous liquid formulation for rinsing and / or softening articles made of textile fibers.
This can be carried out in a proportion of from 0.2 to 10 g / l, preferably from 2 to 10 g / l.
In addition to the nonionic polysaccharide, other components of the type may be present

• combinations of cationic surfactants (quaternized triethanolamine diester with dimethylsulfate, N-methylimidazoline tallow ester methyl sulfate, dialkyldimethylammonium chloride, alkylbenzyldimethylammonium chloride, methylimidazolinium methyl sulfate, methyl-bis (alkylamidoethyl) sulfate) ) -2-hydroxyethylammonium ...) in an amount ranging from 3 to 50%, preferably from 4 to 30% of said formulation optionally combined with nonionic surfactants (ethoxylated fatty alcohols, ethoxylated alkylphenols, etc.) in an amount that may be go up to 3%;
• polyorganosiloxanes (0.1 to 10%)
• optical brighteners (0.1 to 0.2%);
• optionally anti-color transfer agents (polyvinylpyrrolidone, polyvinyloxazolidone, polymethacrylamide ... 0.03 to 25%, preferably 0.1 to 15%)
• colorants,
• perfumes,
• solvents, in particular alcohols (methanol, ethanol, propanol, isopropanol, ethylene glycol, glycerin)
• foam limiters.

A third embodiment of the care composition of the invention consists of a drying additive of textile fiber articles in a suitable drying machine.
Said additive comprises a flexible solid support consisting for example of a woven or non-woven textile web, a cellulose sheet, impregnated with said nonionic polysaccharide; said additive is introduced on drying in the wet laundry to be dried at a temperature of the order of 50 to 80 ° C for 10 to 60 minutes.
Said additive may further comprise cationic softening agents (up to 99%) and anti-color transfer agents (up to 80%) such as those mentioned above.
A fourth embodiment of the care composition of the invention consists of an ironing formulation which can be sprayed directly onto the dry cloth before the ironing operation.
Said formulation may further contain silicone-based polymers (from 0.2 to 5%), nonionic surfactants (from 0.5 to 5%) or anionic surfactants (from 0.5 to 5%), perfumes (0.1 to 3%), cellulose derivatives (0.1 to 3%) such as starch; spraying said formulation on the laundry makes it easier to iron and to limit the creasing of the laundry when worn.

• tensioactifs anioniques tels que ceux déjà mentionnés ci-dessus, en quantité d'au moins 5% du poids de la composition
• tensioactifs non-ioniques tels que ceux déjà mentionnés ci-dessus, en quantité pouvant aller de 15% à 40% du poids de la composition
• des hydrocarbures aliphatiques, en quantité pouvant aller de 5% à 20% du poids de la composition.

A fifth embodiment of the care composition of the invention consists of a washing additive ("prespotter") in the form of an aqueous solution or dispersion or of a solid (stick). .
In addition to the nonionic polysaccharide, other components of the type may be present.

• anionic surfactants such as those already mentioned above, in an amount of at least 5% of the weight of the composition
• nonionic surfactants such as those already mentioned above, in an amount ranging from 15% to 40% by weight of the composition
• aliphatic hydrocarbons, in an amount ranging from 5% to 20% of the weight of the composition.

The following examples are given for illustrative purposes.

• * l'hydroxypropyl guar HPG1 présentant un taux de modification de 1,2 et une viscosité dynamique de 1300 mPa.s
• * l'hydroxypropyl guar HPG2 présentant un taux de modification de 0,6 et une viscosité dynamique de 3000 mPa.s

The nonionic polysaccharides used in the following examples are

• hydroxypropyl guar HPG1 having a modification level of 1.2 and a dynamic viscosity of 1300 mPa.s
• hydroxypropyl guar HPG2 having a modification ratio of 0.6 and a dynamic viscosity of 3000 mPa.s

Example 1 Detergent formulation

Formulation (AT) (B) (C) color (D) color constituents % in weight % in weight % in weight % in weight Zeolite 4A 25 25 25 25 Silicate 2 SiO _2, Na ₂ O 5 5 5 5 Sodium carbonate 15 15 15 15 Sokalan CP5 Acrylate / Maleate Copolymer (BASF) 5 5 5 5 Sodium sulphate 8 8 21 21 CMC blanose 7MXF (HERCULES) 1 1 1 1 Perborate monohydrate 15 15 0 0 Pelletized TAED 5 5 0 0 Anionic surfactant Laurylbenzene sulfate (Nansa) 6 6 8 8 Symperonic A3 nonionic surfactant (ethoxylated alcohol 3 EO - ICI) 3 3 5. 5 Symperonic A9 nonionic surfactant (Ethoxylated alcohol 9 EO ICI) 9 9 11 11 Enzymes (Esterases, Amylases, Cellulase, Protease) 0.5 0.5 0.5 0.5 Perfume 1 1 1 1 Nonionic polysaccharide (% dry) 0 1 0 1 polyvinylpyrrolidone 0 0 1 1 Dupont O TEX PF 594 antifouled sulfonated copolyester from Rhodia 0.5 0.5 0.5 0.5

• nombre d'éprouvettes par pot du Tergotomètre : 10
• volume d'eau : 1 litre
• eau de dureté française 30°TH obtenue par dilution appropriée d'eau minérale de marque Contrexéville®
• concentration en lessive : 5 g/l
• température de lavage : 40°C
• durée du lavage : 20 min
• vitesse d'agitation du Tergotomètre : 100 tours/minute
• rinçage à l'eau froide (environ 30°TH)
• durée de rinçage : 5 minutes

Les éprouvettes sont ensuites froissées sous une presse de 150 gxcm^-2 pendant 90 secondes, puis mises à sécher horizontalement pendant une nuit.
On réalise ensuite une photographie numérique en couleur des éprouvettes sèches, qui est ensuite transformée en 256 niveaux de gris (échelle de gris de 0 à 255).
On compte le nombre de pixels correspondant à chaque niveau de gris.
Pour chaque histogramme obtenu, on mesure l'écart type σ de la distribution du niveau de gris.
σ1 correspond à l'écart type obtenu avec la formulation détergente ne renfermant pas de polysaccharide non-ionique.
σ2 correspond à l'écart type obtenu avec la formulation détergente renfermant le polysaccharide non-ionique.
La valeur de performance WR ("Wrinckle Recovery") est donnée par l'équation suivante $$\mathrm{WR}\left(\mathrm{\%}\right)\mathrm{=}\left[\left(\mathrm{\sigma }\mathrm{1}\mathrm{-}\mathrm{\sigma }\mathrm{2}\right)\mathrm{/}\mathrm{\sigma }\mathrm{1}\right]\mathit{f}\times \mathrm{100}$$

f étant un facteur de normalisation, ici de l'ordre de 2,1.
Une valeur de :

• 0% correspond à bénéfice nul
• 100% correspond à une surface non-froissée (surface plate obtenue après repassage)

Les valeurs de performance obtenues sont les suivantes : Formulation (A) (B) (C) (D) HPG1 HPG2 HPG1 HPG2 WR 0% 20% 18% 0% 29% 22% Ces valeurs positives de WR sont représentatives d'une propriété d'antifroissage apportée par la formulation détergente comprenant le polysaccharide non-ionique selon l'invention.A washing operation is carried out in a laboratory apparatus Tergotometer well known in the art of detergent composition formulators. The device simulates the mechanical and thermal effects of American pulsator-type washing machines, but thanks to the presence of 6 washing pots, it allows simultaneous series of tests with a considerable saving of time.
Decanted cotton specimens (supplied under the reference 2436W by Phoenix Colio Ltd.) are cut to dimensions 10 × 10 cm.
The cotton test pieces are first ironed in order to have all the same level of creasing before washing.
They are then washed with the aid of the above detergent formulations containing or not containing the nonionic polysaccharide and rinsed 3 times, under the following conditions:

• number of test pieces per pot of the Tergotometer: 10
• volume of water: 1 liter
• French hardness water 30 ° TH obtained by appropriate dilution of Contrexéville® brand mineral water
• concentration in laundry: 5 g / l
• washing temperature: 40 ° C
• washing time: 20 min
• Tergotometer shaking speed: 100 rpm
• rinsing with cold water (about 30 ° TH)
• flushing time: 5 minutes

The test pieces were then crumpled under a 150 gxcm ^-2 press for 90 seconds, and then left to dry horizontally overnight.
A color digital photograph is then taken of the dry specimens, which is then transformed into 256 gray levels (gray scale from 0 to 255).
We count the number of pixels corresponding to each level of gray.
For each histogram obtained, the standard deviation σ of the distribution of the gray level is measured.
σ 1 corresponds to the standard deviation obtained with the detergent formulation containing no nonionic polysaccharide.
σ 2 corresponds to the standard deviation obtained with the detergent formulation containing the nonionic polysaccharide.
The WR ("Wrinckle Recovery") performance value is given by the following equation $$\mathrm{WR}\left(\mathrm{\%}\right)\mathrm{=}\left[\left(\mathrm{\sigma }\mathrm{1}\mathrm{-}\mathrm{\sigma }\mathrm{2}\right)\mathrm{/}\mathrm{\sigma }\mathrm{1}\right]\mathit{f}\times \mathrm{100}$$

f being a normalization factor, here of the order of 2.1.
A value of:

• 0% corresponds to zero profit
• 100% corresponds to a non-wrinkled surface (flat surface obtained after ironing)

The performance values obtained are as follows: Formulation (AT) (B) (VS) (D) HPG1 HPG2 HPG1 HPG2 WR 0% 20% 18% 0% 29% 22% These positive values of WR are representative of an anti-crease property provided by the detergent formulation comprising the nonionic polysaccharide according to the invention.

Example 2 Rinse / softening formulation

constituents % in weight Cationic surfactant: ditallowdimethylammonium chloride 5% Perfume 1% HCl to obtain a pH = 3 0.2% nonionic polysaccharide (% dry) 2%

Example 3 MEASUREMENT OF COLOR PROTECTION PRINCIPLE

It consists in carrying out, under defined conditions, 10 washings of a sample of several colored cotton fabrics. The color protection efficiency is tested in automated washing machine. The actual evaluation is done by a reflectance measurement. The tissues are examined before and after 10 chews. The color variation thus recorded (ΔE *) constitutes the loss of color on each type of tissue.

APPARATUS - REAGENTS

• * Automated washing machine AEG Lavamat 2050 Turbo:
  • Commercial washing machine with front window - washing cycles at 40 ° C - washing water volume: 13 liters
  • Saved program: 10 wash cycles
• * LUCI100 Reflectometer - Dr Lange:
  • This is a reflectance device used to measure tissue colors before and after washing.
• * 6 Dishcloths: ecru cotton referenced 402MBLI (provenance D. PORTHAULT SA)
• * 4 Towels (as ballast): Terry towel in white cotton curls 500 g / m2 (provenance D. PORTHAULT SA)
• * Sample of 5 different colored commercial fabrics
  • black woven cotton
  • red woven cotton
  • turquoise woven cotton
  • blue woven cotton
  • printed woven cotton

OPERATIVE MODE Washing conditions :

Washing temperature: ° C 40 Duration: about 67 minutes Number of wash: 10 Laundry load: 3 kg dry (4 towels + 6 tea towels + colored fabrics) Volume of the bath: 13 liters ± 1 liter Water hardness : about 23 ° TH french Concentration detergent formula: 5 ± 0.1 g / l

Operating method : 5 steps

• Color measurement of new tissue specimens
• Stitching test pieces of colored fabrics on the cloths to avoid fraying during successive washings
• 10 washes without drying between cycles
• Drying in the open air
• color measurement on washed fabrics

The colors are measured on LUCI100 reflectometer:

The measuring system used is CIE-L * a * b * (DIN6174, CIE-LAB 1976).

• L* correspond au degré de blanc sur une échelle blanc - noir.
  L*=100 pour une éprouvette blanche
  L*=0 pour une éprouvette noire
• a* situe la couleur dans une gamme allant du vert au rouge.
  a* ≥0 la couleur tire sur le rouge.
  a* ≤0 la couleur tire sur le vert
• b* situe la couleur dans lune gamme allant du jaune au bleu.
  b* ≥0 la couleur tire sur le jaune.
  b* ≤0 la couleur tire sur le bleu.

It breaks down as follows:

• L * corresponds to the degree of white on a white-black scale.
  L * = 100 for a white test tube
  L * = 0 for a black test tube
• a * places the color in a range from green to red.
  a * ≥0 the color is red.
  a * ≤0 the color draws on the green
• b * places the color in a range from yellow to blue.
  b * ≥0 the color draws yellow.
  b * ≤0 the color is blue.

Each tissue specimen is measured at 5 different points (one at the center and one at each corner) and the average of the L *, a * and b * components is calculated.

EXPLOITATION OF RESULTS :

$$\mathrm{\Delta a}*=\mathrm{a}*\mathrm{après\; lavage}-\mathrm{a}*\mathrm{avant\; lavage}$$

$$\mathrm{\Delta b}*=\mathrm{b}*\mathrm{après\; lavage}-\mathrm{b}*\mathrm{avant\; lavage}$$

The reflectometer is equipped with software that indirectly calculates the ΔE * from previously recorded data. This value corresponds to the color variation recorded on the fabric after washing and is expressed as follows: $$\mathrm{.DELTA.L}*=\mathrm{The}*\mathrm{after\; washing}-\mathrm{The}*\mathrm{before\; washing}$$

$$\mathrm{.delta.a}*=\mathrm{at}*\mathrm{after\; washing}-\mathrm{at}*\mathrm{before\; washing}$$

$$\mathrm{.DELTA.b}*=\mathrm{b}*\mathrm{after\; washing}-\mathrm{b}*\mathrm{before\; washing}$$

The loss of color for each tissue is then given by the following expression: $$\mathrm{\Delta }{E}^{*}=\sqrt{{\left(\mathrm{\Delta }{\mathrm{The}}^{*}\right)}^2+{\left(\mathrm{\Delta }{\mathrm{at}}^{*}\right)}^2+{\left(\mathrm{\Delta }{b}^{*}\right)}^2}$$

ΔE_ref correspondant au ΔE obtenu avec la formulation (C) de l'exemple 1 sans polysaccharide non-ionique
ΔE_traité correspondant au ΔE obtenu avec la formulation (D) de l'exemple 1 contenant un polysaccharide non-ioniqueThe performance of the polysaccharide is evaluated in%, according to the following equation $$\mathit{performance}\%=\left(\frac{\mathrm{\Delta }{E}_{\mathit{ref}}-\mathrm{\Delta }{E}_{\mathit{treaty}}}{\mathrm{\Delta }{E}_{\mathit{ref}}}\right)\times 100\%$$

ΔE _ref corresponding to ΔE obtained with formulation (C) of Example 1 without nonionic polysaccharide
ΔE _treated corresponding to the ΔE obtained with the formulation (D) of Example 1 containing a nonionic polysaccharide

• 0% correspond à un bénéfice nul par rapport au tissu lavé sans polysaccharide non-ionique
• 100% correspond à une absence de changement de couleur (le tissu est comme neuf)

A performance of

• 0% corresponds to a zero benefit compared to non-ionic polysaccharide-washed fabric
• 100% corresponds to an absence of color change (the fabric is like new)

The results obtained are as follows: tissue (VS) (D) HPG1 HPG2 black 0% 16% 24% red 0% 31% 12% turquoise 0% 18% 47% blue 0% 12% 14% printed 0% 8% 15%

These results show that the presence of nonionic polysaccharide in the formulation (D) significantly improves the color protection.

Claims (23)

1. The use, in a composition for caring for articles made of textile fibers in aqueous or wet medium, of at least one nonionic polysaccharide that is soluble under the working conditions of said composition, a polysaccharide the native skeleton of which is formed from

   * a main chain comprising similar or different anhydrohexose units, and

   * branches comprising at least one anhydropentose and/or anhydrohexose unit,

   the anhydrohexose and/or anhydropentose units of the native skeleton being modified with at least one nonionic group,
   the degree of modification MS of the anhydrohexose and/or anhydropentose units with said nonionic group or groups being of at least 0.001 and preferably of at least 0.01,
   as an agent for preventing the degradation of said articles and for protecting the colors of said articles and/or for affording said articles crease-resistance and/or softening properties.
2. The use as claimed in claim 1, characterized in that the degree of modification MS is up to 6.
3. The use as claimed in claim 1 or 2, characterized in that the degree of modification MS is less than 3.
4. The use as claimed in any one of claims 1 to 3, characterized in that the degree of modification MS is up to 2.
5. The use as claimed in any one of claims 1 to 4, characterized in that the nonionic groups are linked to the carbon atoms of the sugar skeleton either directly or via -O- bonds.
6. The use as claimed in any one of claims 1 to 5, characterized in that the nonionic groups have the formula:

   • -[-CH₂-CH(R)-O]_x-R¹ in which:

   R is a hydrogen atom or an alkyl radical containing from 1 to 4 carbon atoms,

   x is an integer ranging from 0 to 6,

   R¹ represents:

   . a hydrogen atom when x is different from 0

   . an alkyl radical containing from 1 to 22 carbon atoms, optionally interrupted with one or more oxygen and/or nitrogen hetero atoms, cycloalkyl, aryl or arylalkyl, containing from 6 to 12 carbon atoms,

   . a radical -(CH₂)_y-COOR²

   . a radical -(CH₂)_y-CN

   . a radical - (CH₂)_y-CONHR²

   R² representing an alkyl, aryl or arylalkyl radical containing from 1 to 22 carbon atoms, and

   y is an integer ranging from 0 to 5

   • -CO-NH-R¹ linked to a carbon atom of the sugar skeleton via an -O- bond, R¹ having the definition given above.
7. The use as claimed in any one of claims 1 to 6, characterized in that said nonionic groups are the following groups

   . methyl, ethyl, propyl, isopropyl, butyl, hexyl, octyl, dodecyl, octadecyl, phenyl, benzyl, linked to a carbon atom of the sugar skeleton via an ether, ester, amide or urethane bond,

   . cyanoethyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, linked to a carbon atom of the sugar skeleton via an -O- bond.
8. The use as claimed in any one of claims 1 to 7, characterized in that the hexose units (identical or different) of the main chain of the native skeleton are D-glucose, D- or L-galactose, D-mannose, D- or L-fucose or L-rhamnose units.
9. The use as claimed in any one of claims 1 to 8, characterized in that the pentose and/or hexose units (identical or different) of the branches of the native skeleton are D-xylose, L- or D-arabinose, D-glucose, D- or L-galactose, D-mannose, D- or L-fucose, or L-rhamnose units.
10. The use as claimed in any one of claims 1 to 9, characterized in that said native skeleton is a galactomannan, galactoglucomannan, xyloglucan or scleroglucan.
11. The use as claimed in claim 10, characterized in that said native skeleton is a galactomannan.
12. The use as claimed in claim 11, characterized in that said nonionic polysaccharide is a hydroxypropyl galactomannan.
13. The use as claimed in claim 12, characterized in that said nonionic polysaccharide is a hydroxypropyl guar.
14. The use as claimed in claim 13, characterized in that said hydroxypropyl guar has a degree of modification from 0.1 to 6, preferably from 0.1 to 1.6 and most particularly from 0.4 to 1.2.
15. The use as claimed in any one of claims 1 to 14, characterized in that said composition is in the form

    * of a solid, of a dispersion or of a concentrated aqueous solution placed in contact with the articles made of textile fibers to be treated, after dilution in water;

    * of a dispersion or of a concentrated aqueous solution placed beforehand on the dry articles made of textile fibers to be treated before dilution in water;

    * of a dispersion or of an aqueous solution to be placed directly on the dry articles made of textile fibers to be treated without dilution or of a solid support comprising said nonionic polysaccharide, to be applied directly to the dry articles to be treated; or

    * of an insoluble solid support comprising said nonionic polysaccharide placed directly in contact with the wet articles made of textile fibers to be treated.
16. The use as claimed in any one of claims 1 to 15, characterized in that said composition comprises from 0.05% to 10% of said nonionic polysaccharide expressed as solids.
17. The use as claimed in any one of claims 1 to 16, characterized in that said composition is

    - a solid or liquid detergent formulation comprising from 0.05% to 5%, preferably from 0.1% to 3% of said nonionic polysaccharide, expressed as solids, capable of directly forming a washing bath by dilution;

    - a liquid rinsing and/or softening formulation comprising from 0.05% to 3%, preferably from 0.1% to 2% of said nonionic polysaccharide, expressed as solids, capable of directly forming a rinsing and/or softening bath by dilution;

    - a solid material, especially a textile material, comprising from 0.05% to 10%, preferably from 0.1% to 5% of said nonionic polysaccharide, expressed as solids, which is intended to be placed in contact with wet articles made of textile fibers in a tumble dryer;

    - an aqueous ironing formulation comprising from 0.05% to 10%, preferably from 0.1% to 5% of said nonionic polysaccharide, expressed as solids.

    - a prespotter comprising from 0.05% to 10%, preferably from 0.1% to 5% of said nonionic polysaccharide, expressed as solids, which is intended to be applied to the dry articles made of textile fibers prior to a washing operation using a detergent formulation containing or not containing said nonionic polysaccharide.
18. The use as claimed in any one of claims 1 to 17, characterized in that said composition contains at least one surfactant and/or one detergent additive and/or rinsing additive and/or softener for articles made of textile fibres and/or one solid support for said nonionic polysaccharide.
19. A process for improving the properties of a composition for caring for articles made of textile fibers in aqueous or wet medium, by adding to said composition at least one nonionic polysaccharide, the use of which forms the subject of any one of claims 1 to 14, for preventing the degradation of said articles and in an amount for protecting the colors of said articles and/or for affording said articles crease-resistance and/or softening properties.
20. A process for preventing the degradation of articles made of textile fibers and for protecting the colors of said articles and/or for affording said articles crease-resistance and/or softening properties, by treating said articles, in aqueous or wet medium, using a composition comprising at least one nonionic polysaccharide, the use of which forms the subject of any one of claims 1 to 14.
21. The process as claimed in claim 19 or 20, characterized in that said composition is in the form

    * of a solid, of a dispersion or of a concentrated aqueous solution placed in contact with the articles made of textile fibers to be treated, after dilution in water;

    * of a dispersion or of a concentrated aqueous solution placed beforehand on the dry articles made of textile fibers to be treated before dilution in water;

    * of a dispersion or of an aqueous solution to be placed directly on the dry articles made of textile fibers to be treated without dilution or of a solid support comprising said nonionic polysaccharide, to be applied directly to the dry articles to be treated; or

    * of an insoluble solid support comprising said nonionic polysaccharide placed directly in contact with the wet articles made of textile fibers to be treated.
22. The process as claimed in any one of claims 19 to 21, characterized in that said composition is

    - a solid or liquid detergent formulation comprising from 0.05% to 5%, preferably from 0.1% to 3% of said nonionic polysaccharide, expressed as solids, capable of directly forming a washing bath by dilution;

    - a liquid rinsing and/or softening formulation comprising from 0.05% to 3%, preferably from 0.1% to 2% of said nonionic polysaccharide, expressed as solids, capable of directly forming a rinsing and/or softening bath by dilution;

    - a solid material, especially a textile material, comprising from 0.05% to 10%, preferably from 0.1% to 5% of said nonionic polysaccharide, expressed as solids, which is intended to be placed in contact with wet fabrics in a tumble dryer;

    - an aqueous ironing formulation comprising from 0.05% to 10%, preferably from 0.1% to 5% of said nonionic polysaccharide, expressed as solids.

    - a prespotter comprising from 0.05% to 10%, preferably from 0.1% to 5% of said nonionic polysaccharide, expressed as solids, which is intended to be applied to the dry articles made of textile fibers prior to a washing operation using a detergent formulation containing or not containing said nonionic polysaccharide.
23. The process as claimed in any one of claims 19 to 22, characterized in that said articles contain at least 35% by weight of cotton, preferably colored cotton.