EP3863404A1

EP3863404A1 - Composition for decontaminating solid surfaces

Info

Publication number: EP3863404A1
Application number: EP19823794.3A
Authority: EP
Inventors: Marie-Francoise CHIRAC
Original assignee: Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Current assignee: Societe dExploitation de Produits pour les Industries Chimiques SEPPIC SA
Priority date: 2018-10-12
Filing date: 2019-10-09
Publication date: 2021-08-18
Also published as: CN112770630A; FR3087090A1; JP2022502542A; WO2020074825A1; US20210337786A1

Abstract

The invention relates to a composition (C_D) for decontaminating solid surfaces, comprising a surfactant mixture (M₁) based on cocoyl glutamate and alkyl polyglycosides, at least one thickening agent and/or gelling agent, and at least one decontamination agent.

Description

Decontamination composition for solid surfaces

The subject of the present invention is a composition, a foam comprising at least one decontamination agent, and a method for decontamination of solid surfaces.

The composition according to the invention makes it possible to obtain an aqueous foam, comprising decontamination agents, which remains stable, and which generates a height or a volume of foam within a short time.

The present invention finds its application in the decontamination of solid surfaces contaminated for example by grease, by radioactive mineral deposits. When the decontamination agents are disinfecting agents, the foams according to the invention comprising them are used for the disinfection of solid surfaces contaminated with pathogenic agents such as bacteria, fungi, viruses.

There are already numerous foaming compositions and foams which are intended for the treatment of solid surfaces, and more particularly for cleaning treatments and disinfection treatments for solid surfaces.

However, these foams have the disadvantage of quickly destabilizing by draining water. Indeed, the foams are constituted by a set of gas cells separated by thin blades of liquids, formed by the juxtaposition of bubbles generated by a gas dispersed in a liquid. They are generally prepared from aqueous compositions comprising at least one foaming surfactant by mixing a gas, such as, for example, air or nitrogen or carbon dioxide. Certain surfactants are known to generate foams by mixing with gases.

In the operations for cleaning and disinfecting solid surfaces, the foam constitutes the vector of the aqueous solution comprising the decontaminating agent and its stability characteristic must be such that it induces sufficient contact time with the solid surface to allow a effective decontamination treatment.

Thus, when these foams are used for cleaning and / or disinfecting solid surfaces of easy access, such as for example solid surfaces of external equipment which may include horizontal walls, it is necessary that the foam shows a high stability of so that the treatment undertaken is effective. Likewise, when these foams are used for cleaning and / or disinfecting solid surfaces consisting of vertical walls, either internal walls of vertical equipment, or internal walls of these complex tubular conduits with convolutions like elbows or coils, it is essential that said foams used are highly stable.

Indeed, if the foam used is not sufficiently effective due to its instability, it is necessary:

- either to apply this foam repeatedly on the solid surface to be treated, and consequently to generate a greater quantity of effluents,

- or to increase the concentration of decontaminating agent in the foam, generating an additional cost and, depending on the types of solid surfaces, which can cause unwanted corrosion phenomena.

However, the mechanical properties of these foams are different depending on the nature of said surfactants. Thus, in order to obtain foams of high stability, which are characterized by a high foam viscosity and duration, the skilled person must combine the surfactant with one or more additives having the effect of increasing the rigidity of the structure of gas cells.

International application published under the number WO 93/22538 A1 describes a tunnel excavation process characterized by the injection of a foam generated by activation of a foaming surfactant in aqueous solution in the presence of a foaming aid chosen from the group consisting of fatty amines, fatty alcohols, alkanols fatty amides or tertiary amino-oxides. These foam stabilizing additives, however, are often not very biodegradable and sometimes toxic, which makes them non-compliant with new environmental regulations.

The international patent application published under the number WO 2008 / 101855A1 discloses decontamination foams having properties improved to those previously described.

International application WO 2008 / 101855A1 provides stabilized foams for the treatment of solid surfaces comprising decontamination agents, and solid stabilizing agents; said stabilized foams no longer necessarily comprising surfactants.

The solid stabilizing agents of such foams are thermoplastic and / or thermosetting polymers or copolymers, such as, for example, polyolefins, polyacrylics, polyurethanes. However, given the evolution of regulations concerning the dissemination of plastics in nature, the cosmetic industries seek to use ingredients of a non-plastic nature.

The international patent application published under number WO 2018/115635 A1 discloses mixtures (Mi) comprising surfactants based on N-acylated derivatives of glutamic acid and / or aspartic acid, in acid form and / or in salified form, and surfactants of the alkylpolyglycoside type.

The international patent application published under the number WO 2018/115635 A1 more particularly describes solutions comprising the mixtures (Mi) as described above, compositions comprising water, mixtures (Mi), at least one fluorinated surfactant , and at least one gelling agent, and the use of such solutions and such compositions for preparing foams intended to fight fires. Such mixtures of surfactants (Mi) generate foams which are particularly suitable for fire fighting because they are obtained after a short expansion period, they have a stability adapted to prevent the restarting of the fire.

However, in the presence of a decontaminating agent, the mixtures (Mi), their solutions and their thickened solutions, as described in the international patent application WO 2018/115635 A1, generate a reduced volume of foam compared to the volume of foam generated. in the absence of such decontaminating agents.

There is therefore a real need for a thickened foaming composition which makes it possible to overcome the drawbacks of the thickened foaming compositions of the prior art, that is to say which in particular makes it possible to prepare decontaminating gelled foams with a short expansion time. , to extend the life of said decontaminating gelled foam, to use such compositions for cleaning and / or disinfecting solid surfaces contaminated by dirt and / or by pathogens according to methods making it possible to reduce the quantity of effluents , to use less corrosive decontamination agents, to use these agents in less concentration, as well as to reduce the difficulty, the pollution as well as the cost of the treatment.

A solution of the present invention is a composition (C _D ) for decontaminating solid surfaces comprising for 100% of its mass:

a) - From 35% to 99.3% by mass, preferably from 37% to 98.7% by mass and even more preferably from 40% to 97.6% by mass of water; b) - From 0.5% to 40% by mass, preferably from 1% to 40% by mass, and even more preferably from 2% to 40% by mass of at least one decontamination agent;

c) - From 0.1% to 10% by mass, preferably from 0.1 to 8% by mass and even more particularly from 0.2% to 8% by mass of at least one gelling and / or thickening agent (AG) ;

d) - From 0.1% to 15% by mass, preferably from 0.2% to 15% by mass, and even more preferably from 0.2% to 12% by mass of a mixture (Mi) comprising for 100% of its own mass:

(i) - From 50% to 99% by mass, preferably from 65% to 85% by mass and even more preferably of a composition (Ci) comprising for 100% of its mass:

(a) - From 65% to 90% by mass, preferably from 65% to 85% by mass and even more preferably from 65% to 80% of at least one compound of formula (I):

Ri -C (= 0) -NH-CH (C00H) - (CH ₂ ) ₂ -C00H (I)

in acid form, partially or totally salified in which the group Ri-C (= 0) - represents a linear or branched acyl radical, saturated or unsaturated, comprising from eight to eighteen carbon atoms, and

(P) - From 10% to 35% by mass, preferably from 15% to 35% by mass and even more preferably from 20% to 35% by mass of at least one compound of formula (II):

Ri-C (= 0) -OH (II)

in acid form, partially or totally salified, in which the group Ri is as defined for formula (I),

(ü) - From 1% to 50% by mass, preferably from 1% to 45% by mass, and even more preferably from 1% to 43% by mass of a composition (C ₂ ) comprising for 100% of its mass:

(g) - From 14% to 80% by mass of a composition (C ₃ ) or of a mixture of compositions (C ₃ ), said composition (C ₃ ) being represented by formula (III):

R ₃ -0- (G ₃ ) _p -H (III)

in which R ₃ represents a linear or branched, saturated or unsaturated aliphatic radical containing from 12 to 16 carbon atoms, G ₃ represents the remainder of a reducing sugar and p represents a decimal number greater than or equal to 1.05 and less or equal to 5;

(d) - From 20% to 80% of a composition (C ₄ ) or of a mixture of compositions (C ₄ ), said composition (C ₄ ) being represented by formula (V):

R ₄ -0- (G ₄ ) _q -H (Y) in which R ₄ represents a linear aliphatic radical, chosen from the radicals n-butyl (nC ₄ H9-), n-pentyl (n-CsHn-), n-hexyl (nC ₆ Hi ₃ -), n-heptyl (nC ₇ Hi5-), G ₄ represents the remainder of a reducing sugar and q represents a decimal number greater than or equal to 1.05 and less than or equal to 5.

Note that the composition according to the invention will preferably be of foaming form.

By compounds of formula (I) or (II) in acid form, partially or totally salified, it is meant that in the context of the present invention one, more or all of the carboxyl functions present in one or other of the said compounds of formula (I) or (II) is either in acid form (-COOH) or in salified form (-COO M ⁺ ). In the latter case M ⁺ represents a monovalent cation chosen from:

- The ammonium cation,

- The monovalent cations of alkali metals, for example the cation sodium (Na ⁺ ), potassium (K ⁺ ) or lithium (Li ⁺ ),

- The (hydroxyalkyl) ammonium, bis (hydroxyalkyl) ammonium or tris (hydroxyalkyl) ammonium cations in which the hydroxyalkyl radical (s) contain from one to four carbon atoms, for example the cations 2-hydroxy ethanammonium, 2-hydroxy propanammonium, bis (2-hydroxy ethyl) ammonium and tris (2-hydroxy ethyl) ammonium,

- (alkyloxyalkyl) ammonium, bis (alkyloxyalkyl) ammonium or tris (alkyloxyalkyl) ammonium cations in which the alkyloxyalkyl radical (s) contain from two to six carbon atoms, for example the 2-ethoxy ethanammonium cation,

- The (hydroxyalkylaminoalkyl) ammonium, bis (hydroxyalkylaminoalkyl) ammonium or tris (hydroxyalkylaminoalkyl) ammonium cations, in which the hydroxyalkylaminoalkyl radical (s) contain from two to six carbon atoms, for example the 2-hydroxy ethylaminomethanammonium cation and the 2-hydroxy cation ethylaminoethanammonium.

Depending on the case, the composition according to the invention may have one or more of the characteristics below:

- the decontamination agent is chosen from the elements of the group consisting of acid agents in acid form, partially or totally salified for decontamination; basic decontamination agents; disinfectants;

- The gelling and / or thickening agent is chosen from polysaccharides consisting of derivatives of oses, polysaccharides consisting solely of oses, cellulose and cellulose derivatives, starches and polyelectrolytes which are linear or branched or crosslinked; - said composition (C ₃ ) consists of a mixture of compounds represented by the formulas (IIIi), (III ₂ ), (III ₃ ), (III ₄ ) and (III ₅ ):

R ₃ -0- (G ₃ ) _I -H (III _I ),

R ₃ -0- (G ₃ ) ₂ -H (III ₂ ),

R ₃ -0- (G ₃ ) ₃ -H (III ₃ ),

R ₃ -0- (G ₃ ) ₄ -H (III ₄ ),

R ₃ -0- (G ₃ ) ₅ -H (III5),

in the respective molar proportions ai, a ₂ , a ₃ , a ₄ and a ₅ , such that:

the sum: ai + a ₂ + a ₃ + a ₄ + a ₅ is equal to 1, and

the sum ai + 2a ₂ + 3a ₃ + 4a ₄ + 5a ₅ is equal to p;

said composition (C ₄ ) consists of a mixture of compounds represented by the formulas (Vi), (V2), (V ₃ ), (V4) and (V5):

R ₄ -0- (G ₄ ) _I -H (V _I ),

R ₄ -0- (G ₄ ) ₂ -H (V ₂ ),

R ₄ -0- (G ₄ ) ₃ -H (V ₃ ),

R ₄ -0- (G ₄ ) ₄ -H (V ₄ ),

R ₄ -0- (G ₄ ) ₅ -H (V _S ),

in the respective molar proportions a'i, a'2, a _'3, A'4 and A'5, such as:

the sum: a'i + a'2 + a ' ₃ + a' ₄ + a'5 is equal to 1, and

the sum a'i + 2a ' ₂ + 3a' ₃ + 4a ' ₄ + 5a's is equal to q;

the composition (C2) comprises from 0% to 3% by mass of at least one alcohol of formula (IV): R ₃ -OH (IV)

in which R ₃ is as defined in formula (III), and / or from 0% to 3% by mass of at least one alcohol of formula (VI):

R4-OH (VI)

wherein R ₄ is as defined for formula (V);

- the compounds of formula (I) and of formula (II) are partially or completely salified in the form of sodium salt or potassium salt;

said mixture (Mi) comprises, for 100% of its mass, from 55% to 99% by mass of said composition (Ci) and from 1% by mass to 45% by mass of said composition (C2), and more particularly from 57% to 99% by mass of said composition (Ci) and from 1% by mass to 43% by mass of said composition (C2);

the composition (Ci) as defined above comprises, for 100% of its mass, from 65% to 90% by mass of one or more compounds of formula (I) and from 10% to 35% mass of one or more compounds of formula (II); and more particularly from 65% to 85% by mass of one or more compounds of formula (I) and from 15% to 35% by mass of one or more compounds of formula (II).

- in formulas (I) and (II) the group Ri-C (= 0) - represents an acyl radical chosen from the octanoyl, decanoyl, dodecanoyl, tetradecanoyl, hexadecanoyl, octadecanoyl, 9-octadecenoyl, 9, 12-octadecadienoyl radicals and 9, 12, 15-octadecatrienoyl;

the composition (Ci) included in the surfactant mixture (Mi), the compound or compounds of formula (I) are chosen from monosodium N-cocoyl glutamate, monopotassium N-cocoyl glutamate, disodium N-cocoyl glutamate and N-cocoyl dipotassium glutamate;

- said composition (C ₂ ) comprises for 100% of its mass:

(g) - A mass proportion of said composition (C ₃ ) greater than or equal to 14% and less than 70%, and

(d) - A mass proportion of said alcohol of formula (IV) greater than or equal to 0% and less than or equal to 3%,

(e) - A mass proportion of said composition (C ₄ ) greater than or equal to 30% and less than or equal to 80%, and

(h) - A mass proportion of said alcohol of formula (VI) greater than or equal to 0% and less than or equal to 3%;

said composition (C ₂ ) comprises, for 100% of its mass, a mass proportion of said composition (C ₃ ) greater than or equal to 14% and less than or equal to 65%, a mass proportion of said alcohol of formula (IV) greater than or equal to 0% and less than or equal to 3%, a mass proportion in said composition (C ₄ ) greater than or equal to 35% at and less than or equal to 80% and a mass proportion in said alcohol of formula (VI) greater than or equal to 0% and less than or equal to 3%.

- G ₃ represents the remainder of a reducing sugar chosen from the remains of glucose, xylose and arabinose;

p represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, more particularly greater than or equal to 1.05 and less than or equal to 2.0, and even more particularly greater than or equal to 1, 25 and less than or equal to 2.0;

- in formulas (III) and (IV), R ₃ represents a linear alkyl radical chosen from the n-dodecyl (n-Ci ₂ H ₂₅ -), n-tetradecyl (n-Ci ₄ H ₂₉ -) and n radicals -hexadecyl (n-Ci ₆ H ₃₂ -);

- G ₄ represents the remainder of a reducing sugar chosen from the remains of glucose, xylose and arabinose; q represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, more particularly greater than or equal to 1.05 and less than or equal to 2.0, and even more particularly greater than or equal to 1, 25 and less than or equal to 2.0;

- in formulas (V) and (VI), R ₄ represents a linear alkyl radical chosen from the n-hexyl (nC>, Hi ₃ ) and n-heptyl (nC ₇ Hi ₅ ) radicals; Preferably, in formulas (V) and (VI), R ₄ represents the heptyl radical (nC ₇ Hi ₅ -); according to another preferred mode, in formulas (V) and (VI), R ₄ represents the n-hexyl radical (nC ₆ Hi ₃ -).

said composition (C ₂ ) comprises a mixture of compositions (C ₃ ) and of compositions (C ₄ ), said mixture comprising for 100% of its mass:

(gi) - From 13.6% to 44.4% by mass of a composition (C ₃ ) represented by formula (III) in which R ₃ represents the radical (nC ^ ffe),

(g ₂ ) - from 5% to 16.25% by mass of a composition (C ₃ ) represented by formula (III) in which R ₃ represents the n-tetradecyl radical (n-Ci ₄ H ₂₉ ), and

(g ₃ ) - from 1.4% to 4.55% by mass of a composition (C ₃ ) represented by formula (III) in which R ₃ represents the n-hexadecyl radical (n-Ci ₆ H ₃₂ ),

(ei) - From 35% to 80% by mass of a composition (C ₄ ) represented by the formula (V) in which R ₄ represents the n-heptyl radical (n-CYHis);

(gi) - From 13.6% to 44.4% by mass, more particularly from 17% to 44.4% by mass of a composition (C ₃ ) represented by the formula (III) in which R ₃ represents the radical n -dodecyl (n-Ci ₂ H ₂₅ ),

(g ₂ ) - From 5% to 16.25% by mass, more particularly from 6.25% to 16.25% by mass of a composition (C ₃ ) represented by formula (III) in which R ₃ represents the radical n-tetradecyl (n-Ci ₄ H ₂ 9), and

(g ₃ ) - From 1.4% to 4.55% by mass, more particularly from 1.75% to 4.55% by mass of a composition (C ₃ ) represented by the formula (III) in which R ₃ represents the n-hexadecyl radical (n-Ci ₆ H ₃₂ ), and

(ei) - From 35% to 80% by mass, more particularly from 35% by mass to 75% by mass, of a composition (C ₄ ) represented by the formula (V) in which R ₄ represents the n-hexyl radical (nC ₆ Hi ₃ );

- in formula (III), G ₃ represents the remainder of a reducing sugar chosen from the remains of glucose, xylose and arabinose, p represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, more particularly greater than or equal to 1.05 and less than or equal to 2.0, and even more particularly greater than or equal to 1.25 and less than or equal to 2.0, and R ₃ represents a linear alkyl radical chosen from the n-dodecyl (nC ^ ffe), n-tetradecyl (n-Ci ₄ H ₂₉ ), and n-hexadecyl (n-Ci ₆ H ₃₂ ) radicals;

- in formula (III), G ₃ represents the remainder of the glucose, p represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, and R ₃ represents a linear alkyl radical chosen from the radicals n -dodecyl (nC ^ ffe), n-tetradecyl (n-Ci ₄ H ₂₉ ), and n-hexadecyl (n-Ci6H ₃₂ );

- in formula (III), G ₃ represents the remainder of xylose, p represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, and R ₃ represents a linear alkyl radical chosen from the radicals n -dodecyl (nC ^ ffe), the n-tetradecyl radical (n-Ci ₄ H ₂₉ ), and the n-hexadecyl radical (n-Ci ₆ H ₃₂ );

- in formula (V), G ₄ represents the remainder of a reducing sugar chosen from the remains of glucose, xylose and arabinose, q represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, more particularly greater than or equal to 1.05 and less than or equal to 2.0, and even more particularly greater than or equal to 1.25 and less than or equal to 2.0, and R ₄ represents an aliphatic alkyl radical chosen from the n-hexyl radicals (nC ₆ Hi ₃ ), the n-heptyl radical (nC ₇ Hi ₅ );

- in formula (V), G ₄ represents the rest of the glucose, q represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, and R ₄ represents an aliphatic alkyl radical chosen from the radicals n -hexyl (nC ₆ Hi ₃ ), n-heptyl (nC ₇ Hi ₅ );

- in formula (V), G ₄ represents the remainder of the glucose, q represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, and R ₄ represents the n-heptyl radical (n- C ₇ HI ₅ ).

- in formula (V), G ₄ represents the rest of the xylose, q represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, and R ₄ represents an aliphatic alkyl radical chosen from the radicals n- hexyl (nC ₆ Hi ₃ ), n-heptyl (nC ₇ Hi ₅ );

- in formula (V), G ₄ represents the remainder of xylose, q represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5, and R ₄ represents the n-heptyl radical (n- C ₇ Hi ₅ );

- the mass ratio:

D = Mass of compound (s) of formula (I) / [Mass of the composition (C ₃ ) + Mass of the composition (C ₄ )], is greater than or equal to 20/80 and less than or equal to 65/35 , more particularly greater than or equal to 25/75 and less than or equal to 65/35; - the mass ratio:

Di = Mass of the composition (C ₃ ) / Mass of the composition (C ₄ ) is greater than or equal to 20/80 and less than or equal to 70/30, more particularly greater than or equal to 20/80 and less than or equal to 65/35, and even more particularly greater than or equal to 25/75 and less than or equal to 65/35. ;

- at least one gelling and / or thickening agent (AG) is chosen from xanthan gum (Gx), exudate from acacia gum (G _A ), the mixture of xanthan gum (Gx) and exudate of acacia gum (G _A ) in a mass ratio between xanthan gum (Gx) and acacia exudate gum (G _A ) greater than or equal to 1/3 and less than or equal to 3 / 1;

at least one decontamination agent is a disinfecting agent chosen from the elements of the group consisting of chlorinated products, aldehydes and oxidants;

at least one decontamination agent is an acid agent in acid form, partially or totally salified, chosen from the elements of the group consisting of hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, acid oxalic, benzoic acid, sorbic acid, dehydroacetic acid, peracetic acid;

at least one decontamination agent is a basic agent chosen from the elements of the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate;

- the composition comprises for 100% of its mass:

a) - From 35% to 99.3% water;

b) - From 0.5% to 40% by mass of at least one decontamination agent which is a disinfecting agent chosen from the group consisting of hydrogen peroxide and sodium hypochlorite

c) - From 0.1% to 10% by mass of at least one gelling and / or thickening agent (AG) chosen from the elements of the group consisting of xanthan gum (Gx), exudate of gum acacia (G _A ), the mixture of xanthan gum (Gx) and acacia gum exudate (G _A ) in a mass ratio between xanthan gum (Gx) and acacia exudate gum (G _A ) greater than or equal to 1/3 and less than or equal to 3/1.

d) - From 0.1% to 15% by mass of said mixture (Mi) in which:

- The compound of formula (I) is chosen from monosodium N-cocoyl glutamate, monopotassium N-cocoyl glutamate, disodium N-cocoyl glutamate, dipotassium N-cocoyl glutamate, - The compound of formula (II) is chosen from sodium cocoate and potassium cocoate,

- In formula (III), FL represents a linear or branched, saturated or unsaturated aliphatic radical, comprising from 12 to 16 carbon atoms, G ₃ represents the remainder of glucose or xylose and p represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5;

- In formula (IV), R3 represents a linear or branched, saturated or unsaturated aliphatic radical, comprising from 12 to 16 carbon atoms,

- In formula (V), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ), G ₄ represents the remainder of glucose or xylose and q represents a decimal number greater than or equal to 1.05 and less than or equal at 2,

- In formula (VI), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ).

- the composition comprises for 100% of its mass:

a) - From 35% to 99.3% water;

b) - From 0.5% to 40% by mass of at least one decontamination agent which is an acid agent in acid form, partially or totally salified, chosen from the group consisting of benzoic acid, sorbic acid, l dehydroacetic acid.

d) - From 0.1% to 15% by mass of said mixture (Mi) in which:

- The compound of formula (I) is chosen from monosodium N-cocoyl glutamate, monopotassium N-cocoyl glutamate, disodium N-cocoyl glutamate, dipotassium N-cocoyl glutamate,

- The compound of formula (II) is chosen from sodium cocoate and potassium cocoate,

- In formula (III), R ₃ represents a linear or branched, saturated or unsaturated aliphatic radical, comprising from 12 to 16 carbon atoms, G ₃ represents the remainder of glucose or xylose and p represents a decimal number greater than or equal 1.05 and less than or equal to 2.5;

- In formula (IV), R ₃ represents a linear or branched, saturated or unsaturated aliphatic radical, comprising from 12 to 16 carbon atoms, - In formula (V), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ), G ₄ represents the remainder of glucose or xylose and q represents a decimal number greater than or equal to 1.05 and less than or equal at 2,

- In formula (VI), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ).

By residue of a reducing sugar, the definition of the residues (G ₃ ) and (G ₄ ) denotes formulas (III) and (V) as defined above, the residues of saccharide derivatives without glycosidic bond established between a carbon anomeric and oxygen of an acetal group, as they are defined in the reference work: "Biochemistry, Daniel Voet / Judith G. Voet, p. 250, John Wyley & Sons, 1990."

The oligomeric structures (G ₃ ) _p and (G ₄ ) _q can be in any form of isomerism, whether it is optical isomerism, geometric isomerism or position isomerism; it can also represent a mixture of isomers.

In formula (III) as defined above, the group R ₃ is linked to G ₃ by the anomeric carbon of the saccharide residue, so as to form an acetal function. Similarly, in formula (V) as defined above, the group R ₄ is linked to G ₄ by the anomeric carbon of the saccharide residue, so as to form an acetal function.

In formula (III) of the mixture (Mi) as defined above, G ₃ and G ₄ , which may be identical or different, may optionally represent independently of each other the remainder of a reducing sugar, glucose, dextrose, sucrose, fructose, idose, gulose, galactose, maltose, isomaltose, maltotriose, lactose, cellobiose, mannose, ribose, xylose, arabinose, lyxose, allose , altrose, dextran and tallose.

By linear or branched, saturated or unsaturated aliphatic radical containing from twelve to sixteen carbon atoms, the following are especially denoted for R ₃ in formulas (III) and (IV):

A linear alkyl radical chosen from the n-dodecyl (n-Ci ₂ H25-), n-tetradecyl (n-Ci ₄ H ₂₉ -) and n-hexadecyl (n-Ci ₆ H ₃₂ -) radicals,

- A branched alkyl radical derived from iso-alkanols of formula (1):

(CH ₃ ) (CH ₃ ) CH- (CH ₂ ) _r -CH ₂ -OH (1)

in which r represents an integer between 8 and 16, for example the isododecyl, isotridecyl, isotetradecyl, isopentadecyl or isohexadecyl radical;

- A branched alkyl radical derived from a Guerbet alcohol of formula (2):

CH (C _s H _{2s + i} ) (C _t H _{2t + i} ) -CH ₂ -OH (2)

in which t is an integer between 2 and 12, s is an integer between 2 and 14 and the sum s + t is greater than or equal to 10, and less than or equal to 14, by example the 2-ethyl decyl, 2-butyl octyl, 2-ethyl dodecyl, 2-butyl decyl, 2-hexyl octyl, 2-hexyl decyl or 2-butyl dodecyl radical.

The compounds of formulas (I) as described above are generally obtained by N-acylation of the corresponding amino acids or their salts. It is described for example in the international application published under the number WO 98/09611. It is used either on an amino acid or on a mixture of amino acids. The acylating agent generally consists of an activated derivative of the carboxylic acid of formula:

Ri-C (= 0) -OH,

wherein Ri is as defined above, such as a symmetrical anhydride of this acid, the methyl ester of this acid, or an acid halide such as acid chloride or acid bromide. It can also consist of a mixture of activated derivatives of carboxylic acids obtained from natural oils or fats of animal or vegetable origin such as coconut, coconut, palm kernel, palm, soy, rapeseed oils. , corn, beef tallow, spermaceti oil or herring oil.

Note that the composition (Ci) can be obtained by a process comprising at least:

- a step A) of acylation of a compound of formula (VII):

NH ₂ -CH (COOH) - (CH ₂ ) ₂ -COOH (VII), in acid form, partially or totally salified, with a mixture of acid chlorides comprising for 100% molar, from 40% molar to 60% molar dodecanoyl chloride, 10 mol% to 20 mol% tetradecanoyl chloride, 5 mol% to 15 mol% decanoyl chloride, and 5 mol% to 15 mol% octanoyl chloride, and optionally up to '' up to 100% molar, hexadecanoyl chloride and / or octadecanoyl chloride and / or 9-octadecenoyl chloride and / or octadeca-9,12-dienoyl chloride.

Preferably, the mixture of acid chlorides used comprises per 100 mol%, 11 mol% of octanoyl chloride, 9.5 mol% of decanoyl chloride, 51 mol% of dodecanoyl chloride, 15.5 mol% tetradecanoyl chloride, 6.5 mol% hexadecanoyl chloride, 2 mol% octadecanoyl chloride, 3 mol% 9-octadecenoyl chloride and 1.5% octadeca-9,12-dienoyl chloride .

Note also that the composition (C ₃ ) can be obtained by the implementation of a process comprising at least one step A ') of glycosylation of: - One to five molar equivalents, more particularly two to four molar equivalents, even more particularly three to four molar equivalents, of a mixture of alcohols comprising for 100% molar:

- from 40% to 90% molar of dodecanol-1, more particularly from 65% to 90% molar, and even more particularly from 75% to 90% molar,

- from 9% to 40% molar of tetradecanol-1, more particularly from 9% to 20% molar, and even more particularly from 9% to 20% molar, and

- from 1 mol% to 20 mol% of hexadecanol-l, more particularly from 1% to 15 mol%, and even more particularly from 1% to 5 mol%,

- With a molar equivalent of a reducing sugar of formula (VII):

HO- (G ₃ ) -H (VII)

in which G ₃ represents the remainder of a reducing sugar chosen from the residues of glucose, xylose and arabinose.

Likewise, it should also be noted that the composition (C ₄ ) can be obtained by implementing a process comprising at least one step Ai 'of glycosylation of:

- One to four molar equivalents, more particularly from one to three molar equivalents, even more particularly from two to three molar equivalents of at least one alcohol of formula (VI), with a molar equivalent of a reducing sugar of formula ( VIII):

HO- (G ₄ ) -H (VIII)

in which G ₄ represents the remainder of a reducing sugar chosen from the residues of glucose, xylose and arabinose.

According to another particular aspect, the subject of the invention is said composition (C _D ) as defined above, characterized in that the composition (C ₃ ) is obtained by the implementation of a process comprising at least one step A 'of glycosylation generally carried out with mechanical stirring, by bringing a molar equivalent of a reducing sugar (G ₃ ) into contact with from one to five molar equivalents of the mixture of dodecanol-1, tetradecanol-1, and d hexadecanol-1, as described above, in the presence of an acidic catalytic system, under predetermined temperature and partial vacuum conditions.

Likewise, step Ai 'of the process for preparing the composition (C ₄ ), as defined above, is generally carried out with mechanical stirring, by bringing a molar equivalent of a reducing sugar (G _{4) into contact.} ) with from one to four molar equivalents of at least one alcohol of formula (V), in the presence of an acidic catalytic system, under predetermined temperature and partial vacuum conditions. Such temperature and partial vacuum conditions are for example temperature values between 70 ° C and 130 ° C, and a partial vacuum between 300 mbar (3.10 ⁴ Pa) and 20 mbar (2.10 ³ Pa). Carrying out step A ′ and step Ai ′ of glycosylation makes it possible to respectively form the composition (C ₃ ), ie a mixture of compounds represented by the formulas (IPi), (PI ₂ ), (HL), (III ₄ ) and (III5) as defined above, and optionally an excess of the alcohol of formula (IV) or of the mixture of alcohols of formula (IV), and the composition (C ₄ ), ie a mixture of compounds represented by formulas (Vi), (V ₂ ), (V3), (V ₄ ) and (V ₅ ) as defined above, and optionally an excess of the alcohol of formula (VI).

If necessary or if desired, step A 'or step Ai' of the process for the preparation of the respective compositions (C3) and (C ₄ ) as defined above, can be followed respectively by step B 'or d' a step Bi 'of elimination of the alcohols respectively of formula (IV), or of the mixture of alcohols of formula (IV), and of formula (VI), which have not reacted during step A') or of step Ai '.

Such a preparation process can be supplemented, if necessary or if desired, by neutralization, filtration and discoloration operations.

The term “acid catalytic system” denotes, in step A 'and in step Ai' of the process defined above, strong acids such as sulfuric acid, hydrochloric acid, phosphoric acid, acid nitric, methane sulfonic acid, (para-toluene) sulfonic acid, (trifluoromethane) sulfonic acid, hypophosphorous acid, hyponitrous acid, polyphosphoric acid, or ion exchange resins.

During step B ') or step BΊ) of the process as described above, the alcohols of formula (IV) respectively, or the mixture of alcohols of formula (IV), or the alcohol of formula (V) are eliminated according to methods known to a person skilled in the art such as, for example, by distillation, such as hard film thin film distillation, molecular distillation or extraction by solvents.

In the context of the present invention, by thickening agent present in the composition (CD) which is the subject of the present invention, is meant a chemical compound or a chemical composition which increases the viscosity of the medium into which it is introduced.

In the context of the present invention, by gelling agent present in the composition (CD) object of the present invention, is meant a chemical compound or a chemical composition which transforms a liquid medium into a structured state, which does not flow, by formation a three-dimensional network within the liquid; the gel being considered as an intermediate state between the liquid state and the solid state.

In the context of the present invention, by polysaccharides, is meant saccharide polymers. The IUP AC definition of saccharides designates oses, compounds of oses proper and their derivatives obtained either by reduction of a carbonyl group, or by oxidation of one or more hydroxyl functions, or by replacement of one or more hydroxyl functions by a hydrogen atom, by an amine group, a phosphate function, a sulfate function. The polysaccharides most commonly used for the preparation of industrial, food, cosmetic or pharmaceutical compositions, are mainly made up of oses, such as glucose, galactose, mannose or derivatives of oses for which the hydroxyl function of the terminal carbon has been oxidized to a carboxyl function. Two distinct groups can be distinguished among polysaccharides: polysaccharides consisting only of oses (or poly-oses) and polysaccharides consisting of derivatives of oses.

According to a particular aspect, the gelling agents and / or thickeners present in the composition (C _D ) which is the subject of the present invention are chosen from polysaccharides consisting solely of oses (or poly-oses).

Among the polysaccharides composed entirely of oses, one can distinguish glucans, which are homopolymers of glucose abundant in nature, glucomannoglycans, xyloglycans and galactomannans, which are polymers whose main chain consists of units of D-mannose, linked together at b-1,4, and on which units of D-galactose are grafted laterally by a-1,6 bonds. Galactomannans are present in several plant species, and more particularly in leguminous species in which they constitute the albumen of seeds. Depending on their plant origin, the degree of substitution (DS) of D-galactose units on the main D-mannose chain of galactomannans, varies between 0 and 1:

- the galactomannans from cassia gum have a degree of substitution (DS) of about 1/5, signifying the lateral grafting of one unit of D-galactose every 5 units of D-mannose present on the main chain of polysaccharide.

- The galactomannans from locust bean gum have a degree of substitution (DS) of approximately 1/4, signifying the lateral grafting of one unit of D-galactose every 4 units of D-mannose present on the main chain of polysaccharide. - The galactomannans from tara gum have a degree of substitution (DS) of about 1/3, meaning the lateral grafting of one unit of D-galactose every 3 units of D-mannose present on the main chain of polysaccharide.

- The galactomannans from guar gum have a degree of substitution (DS) of about 1/2, meaning the lateral grafting of one unit of D-galactose every 2 units of D-mannose present on the main chain of polysaccharide.

- The galactomannans from fenugreek gum have a degree of substitution (DS) of about 1/1, meaning the lateral grafting of a D-galactose unit for almost all the D-mannose units present on the main chain polysaccharide.

According to a more particular aspect, the gelling agents and / or thickeners present in the composition (CD) which is the subject of the present invention, are chosen from polysaccharides consisting solely of oses (or poly-oses) included in the group consisting of galactomannan from Tara gum, galactomannan from guar gum and galactomannan from carob gum.

According to another particular aspect, the gelling agents and / or thickeners present in the composition (CD) which is the subject of the present invention are chosen from the polysaccharides consisting of derivatives of oses. Among the polysaccharides made up of derivatives of oses, one can distinguish:

- Sulphated galactans, which are galactose polymers which may have appendix sulphate ester groups, represented in particular by algal polysaccharides such as carrageenans and agar;

- Uronanes, which are polymers of uronic acids such as algin and pectin;

- The heteropolymers of oses and uronic acids: often of complex composition, these polymers are found in particular in the exudates of sap (such as for example the exudate of gum arabic and the exudate of karaya gum) but they are also produced by microorganisms, such as, for example, xanthan gum and gellan gum;

- Glucosaminoglycans which are polysaccharides formed from glucose derived by replacement of its hydroxyl on C-2 by an amine (called 2-amino-2-deoxy-D-glucose or, more simply, glucosamine). The amine function can also be acetylated. Among the hydrocolloids in this class is chitosan, formed only of units glucosamine, and hyaluronan, the repeat unit of which is a dimer of glucosamine and glucuronic acid.

Xanthan gum (Gx) has become the most widely used microbial polysaccharide in the industry in recent decades. Xanthan is a polysaccharide synthesized by bacteria of the genus Xanthomonas and, commercially, only the species X. campestris is used. The main chain of (Gx) is identical to that of cellulose, that is to say that it is formed of bD-glucose units linked by carbons 1 and 4. There is a branched triholoside both glucose units in the main chain, alternately regularly; each branch consisting of a triholoside composed of two mannoses and a glucuronic acid, of the type: b-D-Manp-f 1 4) -P-D-GlcAp- (l 2) -a-D- Manp- (l 3) [I. Capron et al, “About the native and renaturated conformation of xanthan exopolysaccharide”. 1997). Xanthan gum (GX) is available as a sodium, potassium or calcium salt.

Acacia gum is a branched complex polysaccharide whose main chain consists of bD-galactose units linked together by carbons 1 and 3. The chains connected to the main chain are made up of bD-galactose units linked between them by carbons 1 and 6, also carrying α-arabinose units, and in lesser proportions b-glucoronosyl units. Both the main chain and the pendant chains contain a-L-arabinosyl, a-L-rhamnopyranosyl, b-D-glucuronopyranosyl and 4-0-methyl ^ -D-glucuronopyranosyl units.

According to a more particular aspect, the gelling and / or thickening agents present in the composition (C _D ) which is the subject of the present invention are polysaccharides consisting of derivatives of oses chosen from the elements of the group consisting of carrageenans, agar, algin, pectin, gum arabic exudate, karaya gum exudate, xanthan gum, gellan gum, chitosan and hyaluronan, and / or mixtures thereof.

According to an even more particular aspect, the gelling and / or thickening agents present in the composition (C _D ) which is the subject of the present invention, are polysaccharides consisting of derivatives of oses chosen from the elements of the group consisting of the exudate of the acacia gum, karaya gum exudate, xanthan gum and / or mixtures thereof. According to an even more particular aspect, the gelling agents and / or thickeners present in the composition (CD) which is the subject of the present invention, are polysaccharides consisting of derivatives of oses chosen from the elements of the group consisting of gum exudate acacia (G _A ), xanthan gum (Gx), the mixture of xanthan gum (Gx) and acacia gum exudate (GA) used in a mass ratio between xanthan gum (Gx ) and the acacia exudate gum (GA) is greater than or equal to 1/3 and less than or equal to 3/1, in particular marketed by the company SEPPIC under the brand name SOLAGUM ™ AX.

According to a particular aspect, the gelling agents and / or thickeners present in the composition (C _D ) which is the subject of the present invention are chosen from cellulose and cellulose derivatives.

In the context of the present invention, by “cellulose” denotes a polysaccharide which is constituted by a linear chain of D-Glucose molecules, the average molecular mass of which is at least lO.OOOgmol ¹ , more particularly at least minus 15,000gmol ^_1 , more particularly at least l7,000gmol ^_1 , even more particularly at least 20,000gmol ^_1 , even more particularly at least 25,000gmol ^_1 .

According to a more particular aspect, the gelling agents and / or thickeners present in the composition (C _D ) which is the subject of the present invention are chosen from cellulose derivatives

In the context of the present invention, “cellulose derivatives” denotes the elements of the group consisting of hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, methyl hydroxy ethyl cellulose, methyl hydroxy propyl cellulose, G hydroxy propyl cellulose, the sodium salt of carboxy methyl cellulose, dihydroxy propyl cellulose ether (as described in the American patent published under the number US 4,096,326).

In the context of the present invention, by “starch” denotes a mixture of amylose and amylopectin, and more particularly the elements of the group consisting of corn starch, wheat starch, potato starch and cassava starch.

According to a particular aspect, by “polymers of polyelectrolyte type, linear or branched or crosslinked”, is meant within the meaning of the present invention:

- crosslinked synthetic anionic copolymers based on methacrylic acid or acrylic acid, or esters of methacrylic acid or acrylic acid, optionally hydrophically modified, prepared by direct emulsion polymerization. These synthetic anionic copolymers are respectively known to a person skilled in the art under the names "Alkaline Swellable Emulsion" (or "ASE") and "Hydrophobically Alkaline Swellable Emulsion "(or" HASE "). Thickening agents of the" HASE "type are described in the international application published under the number WO 02/34793 A2;

- Synthetic anionic polyelectrolytes, crosslinked or branched, which are crosslinked and / or branched homopolymers or copolymers of water-soluble unsaturated monomers, such as acrylic acid and / or its derivatives, methacrylic acid and / or its derivatives, acrylamide and / or its derivatives, 2-acrylamido-2-methylpropanesulfonic acid and / or its salts, N-vinyl pyrrolidone, vinyl alcohol and / or its derivatives. These synthetic anionic polyelectrolytes, crosslinked or branched, are in the form of reverse latexes, obtained by radical polymerization in reverse emulsion, or in the form of powders, obtained by precipitating polymerization or by atomization of reverse latexes.

According to a particular aspect, the gelling agents and / or thickeners present in the composition (C _D ) which is the subject of the present invention are chosen from linear or branched or crosslinked polyelectrolytes, resulting from the radical polymerization of at least one monomer selected from the elements of the group consisting of acrylic acid and / or its sodium salt, methacrylic acid and / or its sodium salt, 2-hydroxyethyl acrylate, 2-hydroxyethyl methacrylate, acrylamide, N, N-dimethyl acrylamide, N-isopropyl acrylamide, 2-acrylamido-2-methylpropanesulfonic acid and / or its sodium or potassium salt, N-vinyl pyrrolidone, in the presence of a crosslinking agent chosen from polyethylenic monomers comprising at least two ethylenic functions, and more particularly chosen from the elements of the group consisting of ethylene glycol dimethacrylate, tetraallyloxyethane, diacryl ate of ethylene glycol, diallyl urea, triallyl amine, trimethylol propanetriacrylate or methylene bis (acrylamide) or a mixture of these compounds.

According to a particular aspect, the gelling agents and / or thickeners present in the composition (C _D ) which is the subject of the present invention are chosen from the elements of the group consisting of:

- The homopolymer of partially or fully salified acrylic acid, crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methylene-bis (acrylamide),

- The homopolymer of the sodium salt of 2-acrylamido 2-methyl propanesulfonic acid, crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methylene-bis (acrylamide),

- The copolymer of the sodium salt of 2-acrylamido 2-methyl propanesulfonic acid and partially or fully salified acrylic acid, crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methylene-bis (acrylamide), The copolymer of the sodium salt of 2-acrylamido 2-methyl propanesulfonic acid and of 2-hydroxy ethyl acrylate, crosslinked with triallyl amine and / or with trimethylol propanetriacrylate and / or with methylene-bis (acrylamide),

- The copolymer of the sodium salt of 2-acrylamido-2-methyl propanesulfonic acid and of acrylamide, crosslinked with triallyl amine and / or with trimethylol propanetriacrylate and / or with methylene-bis (acrylamide),

- The terpolymer of the sodium salt of 2-acrylamido 2-methyl propanesulfonic acid, of acrylamide and partially or fully salified acrylic acid, crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methylene bis (acrylamide),

- The terpolymer of the sodium salt of 2-acrylamido 2-methyl propanesulfonic acid, of N, N-dimethylacrylamide, and partially or fully salified acrylic acid, crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methyl lene-bis (acry lamide).

According to a more particular aspect, the gelling agents and / or thickeners present in the composition (C _D ) which is the subject of the present invention are chosen from the elements of the group consisting of xanthan gum (Gx), the exudate of the gum acacia (G _A ), the mixture of xanthan gum (Gx) and acacia gum exudate (G _A ) in a mass ratio between xanthan gum (Gx) and exudate gum d acacia (G _A ) is greater than or equal to 1/3 and less than or equal to 3/1, the sodium salt copolymer of 2-acrylamido-2-methyl propanesulfonic acid and 2-hydroxy ethyl acrylate , crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methylene bis (acrylamide), the copolymer of the sodium salt of 2-acrylamido-2-methyl propanesulfonic acid and acrylamide, crosslinked with triallyl amine and / or trimethylol propanetriacrylate and / or methylene-bis (acrylamide).

By contamination, in the sense of the present invention, the penetration into a living organism of substances, called "contaminants", which alter the biological functions and reactions occurring in said organism.

We distinguish :

toxic contamination for which the contaminants are non-living toxic products, such as for example substances or chemical compositions damaging the skin and the human and / or animal organs, or else radioactive products,

biological contamination for which the contaminants are pathogenic microorganisms. These contaminants can be deposited on a solid surface, on a human or animal, and generally in the environment (on plants, in the basement, ...).

By solid surfaces, we mean for example floors, walls, window panes, tiles, household appliances, dishes, worktops, fittings, sinks, chemical storage tanks, food or agricultural, vehicles (cars, motorcycles, trucks, ...), pipes or hoses, an agricultural machine, a vehicle, a cold room, a kitchen, a sanitary, an aircraft, a railway car. In general, "solid surfaces" denote the surfaces of objects as opposed to human or animal skin which is excluded from such a definition.

The materials constituting these solid surfaces are for example glass (soda-lime, fluorocalcic, borosilicate, crystal); concrete; cemented surfaces; the brick ; porcelain ; earthenware; ceramics; medical devices; polycarbonates, polypropylenes plastics; metals, such as iron, stainless steel, silver, copper, aluminum; wood ; synthetic resins; glass ceramic; linoleum, and can be coated with paints, varnishes.

In the context of the present invention, by decontamination agent present in the composition (C _D ) which is the subject of the present invention, is meant a chemical compound or a chemical composition which makes it possible, after application to the solid surface to be treated, to reduce the quantity of contaminating substances present or else to eliminate them from said solid surface.

The decontamination agent is chosen according to the use for which the composition (C _D ) is intended, in particular as a function of the nature of the contamination and of the solid surface to be decontaminated.

In the context of the present invention, by disinfecting agent is meant a substance or a chemical composition which kills or inactivates micro-organisms present on solid surfaces.

The disinfecting agents included in the composition (C _D ) which is the subject of the present invention belong to biocidal products as defined by the regulations concerning the making available on the market and the use of biocidal products (EU Regulation n ° 528 / 20l2 of May 22, 2012).

Biocidal products represent all substances and mixtures, consisting of one or more active molecules, intended to destroy, repel or render harmless living pests, prevent their action or combat them from any other way by chemical or biological action. These products are divided, according to their applications, into four groups which are (i) disinfectants, (ii) protective products aimed at preventing microbial development and the development of algae, (iii) pest control products and (iv) other biocidal products such as anti-fouling products or for embalming and taxidermy.

The effectiveness of disinfectants is dependent on their spectrum of action on the different types of biological agents. Thus, bactericidal agents (action on bacteria), fungicidal agents (action on fungi), virucidal agents (action on viruses) and sporicidal agents (action on spores) are defined. In addition, each disinfecting agent presents several performance criteria, such as (i ') its speed of effectiveness, (ii') its decontamination efficiency which is measured by a factor of reduction of an initial contaminating population under the effect of disinfectant (initial population / final population after treatment) or by the reduction in log of this factor and (iii ') its compatibility with building materials. Disinfectants are therefore classified according to their disinfection efficiency and we speak of disinfectants with a high, medium or low level of disinfection.

The composition (C _D ) which is the subject of the present invention comprises at least one disinfecting agent chosen from disinfecting agents with a high disinfection level, namely disinfecting agents having a factor (initial contaminating population / final population after treatment) greater than 10 ⁶ .

The chlorinated products used as disinfecting agents in the composition (C _D ) which is the subject of the present invention, are characterized by their extended spectrum of activity since they are bactericidal, virucidal, fungicidal and sporicidal. Their action time is rapid and equal to their drying time.

According to a more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one disinfecting agent which is a chlorinated product chosen from the elements of the group consisting of chlorine, sodium hypochlorite (bleach) and chlorine dioxide.

According to an even more particular aspect, the composition (C _D ) which is the subject of the present invention comprises a disinfecting agent which is sodium hypochlorite (bleach).

The aldehydes used as disinfecting agents in the composition (C _D ) object of the present invention, are characterized by their broad spectrum of activity since they are bactericidal, fungicidal, virucidal and sporicidal. They are characterized by a mode of action aimed at causing denaturation of nucleic acids and proteins of microorganisms.

According to a more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one disinfecting agent which is an aldehyde chosen from the elements of the group consisting of glutaraldehyde and succinic aldehyde.

The oxidants used as disinfecting agents in the composition (C _D ) object of the present invention, are characterized by a broad spectrum of activity because they are bactericidal, virucidal, fungicidal and sporicidal. They are characterized by a mode of action aimed at destroying organic membranes.

According to a more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one disinfecting agent which is an oxidizing agent chosen from the elements of the group consisting of hydrogen peroxide; activated peroxides such as mixtures of hydrogen peroxide and sodium bicarbonate, mixtures of hydrogen peroxide and urea, mixtures of hydrogen peroxide and peracetic acid and mixtures of hydrogen peroxide and iron (Fenton's reagent); hydroperoxycarbonates; peracetic acid; sodium perborate; sodium percarbonate possibly perhydrated; sodium peroxisilicate; sodium peroxypyrophosphate; sodium peroxysilicate and aryloxides such as arylbenzenesulfonates.

According to an even more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one disinfecting agent which is chosen from the elements of the group consisting of hydrogen peroxide and mixtures of hydrogen peroxide and peracetic acid.

According to an even more particular aspect, the composition (C _D ) which is the subject of the present invention comprises a disinfecting agent which is hydrogen peroxide.

According to a more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one decontamination agent which is chosen from the elements of the group consisting of sorbic acid, potassium sorbate, sodium sorbate, l dehydroacetic acid, sodium dehydroacetate, benzoic acid, sodium benzoate, potassium benzoate.

According to another even more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one decontamination agent which is a mixture of potassium sorbate and sodium benzoate. According to a more particular aspect, the composition (C _D ) which is the subject of the present invention comprises at least one decontamination agent which is a basic agent chosen from the elements of the group consisting of sodium hydroxide and potassium hydroxide.

According to another particular aspect, the subject of the invention is the aqueous composition composition (C _D ) as defined above in which T at least one decontamination agent is an acid agent chosen from the group consisting of sorbic acid, potassium sorbate, sodium sorbate, dehydroacetic acid, sodium dehydro acetate, benzoic acid, sodium benzoate, potassium benzoate.

According to another even more particular aspect, the subject of the invention is the aqueous composition composition (C _D ) as defined above in which the at least one decontamination agent is an acid agent which is a mixture of potassium sorbate and sodium benzoate.

The aqueous composition (C _D ) which is the subject of the present invention may optionally comprise auxiliary ingredients which are usually found in compositions intended for the decontamination of solid surfaces, for example inorganic salts, salts of organic compounds, surfactants , solvents, antioxidants, anticorrosion agents.

Examples of solvents which are optionally present in the aqueous composition (C _D ) which is the subject of the present invention, there may be mentioned for example ethanol, propanol-1, propanol-2, butanol-1, polyhydric alcohols as glycerol, diglycerol, triglycerol, glycerol oligomers, xylitol, erythritol, sorbitol, 2-methyl propanediol-1,3; alkoxylated polyhydric alcohols; glycols, such as butylene glycol, hexylene glycol, caprylylglycol or 1,2-octanediol or 1,2-pentanediol, pentylene glycol, monopropylene glycol, dipropylene glycol, isoprene glycol, butyldiglycol, trimethyl trimethylene glycol, polyethylene glycol, of molecular weight 200gmol ^_1 and 8.000g.mol ^_1 .

According to a particular aspect, for 100% by mass of the composition (C _D ), the solvents as described above can constitute a mass proportion greater than or equal to 0.5% and less than or equal to 10%, more particularly greater or equal to 0.5% and less than or equal to 5%, greater than or equal to 0.5% and less than or equal to 3%, greater than or equal to 0.8% and less than or equal to 3%.

The term “inorganic salts” denotes heteropolar compounds the crystal lattice of which comprises the participation of at least one type of cation different from the hydrogen ion and of at least one type of anion different from the hydroxide ion, such as the salts constituted by a cation which is the ammonium ion or a metal cation and by an anion selected from the elements of the group consisting of halides, carbonates, bicarbonates , phosphates, nitrates, borates and sulfates, and more particularly sodium, magnesium or calcium chlorides; aluminum, barium, ammonium or zinc heptahydrate sulphates, mixed aluminum and potassium sulphate; manganese or zinc aluminum borates; strontium tetraborates, or hydrated potassium; sodium, aluminum, zinc, manganese or magnesium dihydrogen phosphates, monocalcium, monopotassium, zinc, manganese or aluminum phosphates, carbonates of copper, iron, manganese nickel, zinc, beryllium of cerium, calcium, lithium, cobalt, chromium, zirconium, strontium or potassium or sodium hexahydrate; calcium or strontium hydrogen phosphates; disodium hydrogen, di-manganese, or di-zinc hydrogen phosphates; potassium, sodium, calcium or magnesium bicarbonates; iron, titanium, zinc or antimony oxides; ammonium iron sulfate, ammonium magnesium phosphate; magnesium hydrogen sulfate; barium strontium or hydrated magnesium metaborates; magnesium trisilicate, sodium, zirconium or magnesium nitrates, potassium metaphosphate, potassium potassium tripolyphosphate, sodium trimetaphosphate; ammonium molybdate, ammonium octamolybdate or ammonium heptamolybdate.

By “salts of organic compounds”, is meant a salt constituted by a cation which is the ammonium ion or a metal cation and by an organic anion which is an organic compound having at least one carboxylic acid function in carboxylate form or at least one sulphonic acid function in sulphonate form or at least one sulphate function, for example, ammonium, sodium, copper, magnesium or potassium citrates; calcium, copper, sodium, potassium, strontium or zinc acetates; sodium, ammonium, aluminum, manganese, or potassium oxalates.

As examples of anti-corrosion and / or antioxidant agents which are optionally present in the composition (C _D ) which is the subject of the present invention, mention may, for example, be made of urea, alkano lamines, sodium salts and / or potassium and / or calcium of organic acids, such as for example sodium lactate, sodium citrate, sodium gluconate, sodium ascorbate, sodium succinate, and / or inorganic salts such as by example sodium nitrite, sodium molybdate, sodium phosphates and / or polyphosphates and or any other compound known to those skilled in the art. Among the surfactants which are optionally present in the composition (CED), there are anionic, cationic or amphoteric surfactants. Examples of anionic surfactants that may be mentioned include, for example, alkylethersulfates, alkyl sulfates, alkylamidoethersulfates, alkylarylpolyethersulfates, monoglycerides sulfates, alpha-olefinsulfonates, paraffinsulfonates, alkyl phosphates, alkyl sulfonates, alkylamidesulfonates, alkylamidesulfonates, alkyl sulfides alkylamidesulfosuccinates, alkylsulfo acetates or acyllactylates of alkali metals, alkaline earth metals, ammonium, amines or amino alcohols.

As examples of amphoteric surfactants which are optionally present in the composition (C _D ) which is the subject of the present invention, mention may, for example, be made of alkylbetaines, alkylamidobetaines, sultaines, alkylamidoalkylsulfobetaines, imidazoline derivatives, phosphobetaines, amphopolyacetates and amphopropionates.

As examples of cationic non-fluorinated surfactants which are optionally present in the composition (C _D ) which is the subject of the present invention, mention may, for example, be made of quaternary ammonium derivatives.

The subject of the invention is also a method for decontaminating a solid surface, characterized in that it comprises:

- At least one step Ai of preparing a foam obtained by mixing a composition (CD) according to the invention, with a gas or a mixture of gases, chosen from air, nitrogen or carbon dioxide , followed,

- At least one step A? for bringing the foam prepared in step Ai into contact with the solid surface.

The foam prepared in step Ai of the process which is the subject of the present invention is generated by any foam generation system known to a person skilled in the art and described in the state of the art, such as for example mechanical agitation of the composition aqueous (CD), bubbling one or more gases into the aqueous composition (CD), using a static ball mixer or any other device ensuring mixing between the gas or the gas mixture and the composition aqueous (CD), OR a device using a spray or spray nozzle.

The foam prepared in step Ai of the process which is the subject of the present invention can be produced by various apparatuses known to those skilled in the art, such as, for example, injectors, lances, generators, weirs. According to a particular aspect, the subject of the invention is the process as defined above, characterized in that step Ai consists of a step Ai 'of diluting said composition (C _D ) with water, in a volume ratio (C _û j / water 10/90 to 1/99, followed by a step Ai '' mixing the diluted composition obtained at the end of step Ai 'with a gas or mixture of gas, chosen from air, nitrogen or carbon dioxide.

Step Ai 'of diluting the aqueous composition (C _D ) with water can be carried out by any means known to those skilled in the art, such as for example in tanks of suitable dimensions and with stirring at a speed adapted. More particularly, the dilution water and the aqueous composition (C _D ) can be transported separately, then sent to a generator which creates the foam by mixing the dilution water and the composition (C _D ) with the air. , then projects it, at variable and adjustable rates, to the contaminated surface to be treated. In such a case, the mixture of dilution water and the aqueous composition (C _D ) with the air is produced by suction of air during the expansion of the diluted foaming solution.

In the process which is the subject of the invention, step A? of contacting the foam created during step AD or of the step is carried out by spraying onto the contaminated surface at

treat by means known to those skilled in the art, such as a lance, a generator, a foam cannon.

According to a particular aspect, the subject of the invention is the method as defined above, characterized in that it further comprises a step A ₃ of rinsing the solid surface obtained at the end of step A? .

Step A ₃ of rinsing said solid surface can be carried out using a rinsing solution or a rinsing foam or water.

The rinsing foam or the rinsing solution can be any foam or any suitable solution, depending on the nature of the decontamination foam used during step A ₂ and / or according to the nature of the solid surface to be rinsed. It could be :

a rinsing foam comprising a mixture of water, the mixture (Mi) of surfactants as described above, and a gelling agent (AG) as described above, optionally comprising a buffer compound the nature of which depends on the identity of the decontamination agent used in the composition (C _D ) which is the subject of the invention,

- A rinsing foam comprising water, and optionally a buffer compound, the nature of which depends on the identity of the decontamination agent used in the composition (C _D ) which is the subject of the invention. In the rinsing step Ai, if the decontamination agent used in the composition (C _D ) is an acid agent, a rinsing foam or a rinsing solution comprising a buffer of basic nature will be chosen; in the rinsing step A ₃ , if the decontamination agent used in the composition (C _D ) is a basic agent, a rinsing foam or a rinsing solution comprising a buffer of an acidic nature will be chosen.

The following examples illustrate the invention without, however, limiting it.

1) Preparation of foaming compositions

1.1) Preparation of a solution of disodium N-cocoylglutamate [composition (Ci)].

375 kilograms of water, 250 kilograms of monosodium sodium glutamate monohydrate are introduced into a reactor, with stirring and at a temperature of 20 ° C., then 184 kilograms of an aqueous sodium hydroxide solution at 30% by mass so as to reach a pH of 12. Then 245 kilograms of cocoyl chloride are added gradually with stirring, which is a mixture of acid chlorides comprising for 100% by mass 8% by mass of octanoyl chloride, 8% by mass of decanoyl chloride, 50 % by mass of lauroyl chloride, 17% by mass of myristoyl chloride, 8% by mass of palmitoyl chloride, 3% by mass of stearoyl chloride, 4% by mass of oleoyl chloride and 2% by mass of linoleoyl chloride, then 140 additional kilograms of the 30% sodium hydroxide solution to maintain the pH between 11 and 12. The temperature is maintained between 20 ° C and 50 ° C for two hours.

The mixture obtained is acidified by adding 54 kilograms of an aqueous solution of sulfuric acid at 70% by mass, then diluted with 193 kilograms of water to obtain an aqueous solution of disodium N-cocoylglutamate [composition (Ci)]. 1.2) Analytical characteristics of the solutions previously prepared.

The analytical characteristics of the composition (Ci) are recorded in Table 1 below.

Table 1

2) Preparation of surfactant compositions based on alkylpolyglycosides

2.1) Preparation of a composition (C ₃ )

Poured with stirring into a reactor maintained at 80 ° C., 3.7 molar equivalents of a mixture of fatty alcohols (Ni) consisting for 100% of its mass of 68% by mass of dodecanol-1, of 25% by mass of tetradecanol-1 and 7% by mass of hexadecanol-1, then 1 molar equivalent of anhydrous glucose, followed by 0.15% by mass of 98% sulfuric acid per 100% by mass of the mixture.

The reaction medium is placed under partial vacuum of about 0.18 × 10 ⁵ Pa (180mbar) and maintained at 100 ° C.-105 ° C. for four hours with distillation of the water formed.

After cooling to 85 ° C-90 ° C and neutralization by adding 40% sodium hydroxide, the reaction medium thus obtained is drained at 70 ° C and filtered to remove the grains of unreacted glucose.

The filtrate is then poured into another reactor and the excess of the mixture of fatty alcohols (Ni) removed by distillation using a thin film film evaporator, then the residue diluted in water. After stirring for thirty minutes at 50 ° C., the composition (C ₃ ) is obtained, which comprises 50% by mass of water and 50% by mass of a mixture of alkyl polyglucosides (MAAP _G I), for which the proportions in alkyl polyglucosides and the average degree of polymerization of their polyglucoside residue are determined by gas chromatography (GC); it therefore comprises for 100% by mass 69% by mass of n-dodecyl polyglucosides, 25% by mass of n-tetradecyl polyglucosides and 6% by mass of n-hexacyl polyglucosides with a degree of polymerization equal to 1.25.

2.2) Preparation of a composition (C ₄ ) comprising n-heptyl polyglucoside

2.7 molar equivalents of heptanol-1 are poured with stirring into a reactor maintained at 40 ° C., then 1 molar equivalent of anhydrous glucose, followed by 0.15% by mass of 98% sulfuric acid per 100% by mass of the mixture.

The reaction medium is placed under partial vacuum of about 0.18 × 10 ⁵ Pa (180mbar) and maintained at 100 ° C.-105 ° C. for four hours with distillation of the water formed. After cooling to 85 ° C-90 ° C and neutralization by adding 40% sodium hydroxide, the reaction medium thus obtained is drained at 70 ° C and filtered to remove the grains of unreacted glucose.

The filtrate is then poured into another reactor and the excess of heptanol distilled under partial vacuum, then the residue diluted in water.

After stirring for 30 minutes at 50 ° C., the composition (C ₄ ) is obtained comprising 26.4% by mass of water and 73.6% by mass of n-heptyl polyglucosides (MAAPG2), with a degree of polymerization, determined by CPG, equal to 1.25.

2.3) Preparation of a composition (Cs) comprising n-octyl-polyglucoside and n-decyl polyglucoside.

2.7 molar equivalents of a mixture of fatty alcohols (N ₃ ) consisting of 100% by mass of octanol-1 and 50% by mass are added with stirring to a reactor maintained at 80 ° C. of decanol-1, then 1 molar equivalent of anhydrous glucose, followed by 0.15% by mass of 98% sulfuric acid per 100% by mass of the mixture.

The filtrate is then poured into another reactor, the excess of the mixture of fatty alcohols (N ₃ ) removed by distillation using a thin film film evaporator, then the residue diluted in water.

After stirring for thirty minutes at 50 ° C., the composition (C ^' s) is obtained, which comprises 40% by mass of water and 60% by mass of a mixture of alkyl polyglucosides (MAAPG ₃ ) for which the proportions in alkyl polyglucosides and the average degree of polymerization of their polyglucoside residue are determined by CPG; it thus comprises for 100% by mass 52% by mass of n-octyl polyglucoside and 48% by mass of n-decyl polyglucoside, with an average degree of polymerization equal to 1.30. 2.4) Preparation of compositions based on disodium cocoylglutamate and

alkylpolylglucosides

2.4.1) Preparation of a composition (Ti) comprising disodium N-cocoylglutamate [composition (Ci)], a mixture of n-dodecyl polyglucosides, n-tetradecyl

polyglucosides and n-hexadecyl polyglucosides [composition (C ₃ )], and n-heptyl polyglucoside [composition (C ₄ )]

A composition (Ti) is prepared by pouring, with stirring, into a reactor maintained at 40 ° C., the composition (Ci) and the compositions (C ₃ ) and (C ₄ ). The mixture is stirred for thirty minutes to obtain the compositions (Ti). The quantities used are listed in Table 2 below.

2.4.2) Preparation of a composition (T ₂ ) comprising disodium N-cocoylglutamate [composition (Ci)] and a mixture of n-dodecyl polyglucosides, n-tetradecyl

polyglucosides and n-hexadecyl polyglucosides [composition (C ₃ )]

A composition (T ₂ ) is prepared by pouring, with stirring, into a reactor maintained at

40 ° C, the composition (Ci) and the composition (C ₃ ). The mixture is stirred for thirty minutes to obtain the compositions (T ₂ ). The quantities used are listed in Table 2 below.

Table 2

The analytical characteristics of the compositions (Ti) and (T ₂ ) are recorded in Table 3 below.

Table 3

(1): Residual fatty acids (percentage by mass)

(2): D = (MAi) / [(MAAPGI) + (MAAPG2)]

(3): T '= [(MAAPGI) + (MAAPG2)] / [(MAi) + (MAAPGI) + (MAAPG2)]

(4): D i = (MAAPGI) / (MAAPG2)

(5): MAC = [(MAi) + (MAAPGI) + (MA _APG2 )] / total mass with, total mass = 100 g.

31 Preparation of compositions according to the invention and of comparative compositions

3.1) Preparation of compositions according to the invention Ei to E ₆ and of a comparative composition Eo

The compositions Eo to E ₆ are prepared at a temperature of 25 ° C., in a suitable volume reactor fitted with mechanical stirring of the anchor type at a speed of 50 revolutions.min ¹ . The ingredients are introduced one after the other gradually until a homogeneous and liquid composition is obtained.

The compositions are detailed in the following table 4:

Table 4 (bis)

(6): Euxyl ™ K7l2: aqueous solution containing 45% of active material, said active material comprising for 100% of its mass, 33% by mass of potassium sorbate and 67% by mass of sodium benzoate.

3.2) Preparation of comparative compositions Fo to F ₄ , comprising composition (T ₂ ) The compositions Fo to F ₄ are prepared according to the procedure described in paragraph 3.1 above.

The compositions Fo to F ₄ are detailed in the following table 5:

Table 5

3.3) Preparation of comparative compositions Fs to F9, comprising composition (Ci)

The compositions F ₅ to F9 are prepared according to the procedure described in paragraph 3.1 above.

The compositions F5 to F9 are detailed in the following table 6:

Table 6

3.4) Preparation of comparative compositions Fio to F _I4 , comprising composition (C ₃ )

The compositions Fio to F _I4 are prepared according to the procedure described in paragraph 3.1 above.

The compositions Fio to F _I4 are detailed in table 7 below:

Table 7

3.5) Preparation of comparative compositions Fis to F19, comprising composition (C ₄ )

The compositions Fis to F19 are prepared according to the procedure described in paragraph 3.1 above.

The compositions Fis to F19 are detailed in the following table 8:

Table 8

3.6) Preparation of comparative compositions F20 to F ₂₄ , comprising composition (C ₄ )

The compositions F20 to F ₂₄ are prepared according to the procedure described in paragraph 3.1 above.

The compositions F20 to F ₂₄ are detailed in the following table 9:

Table 9

4) Evaluation of foaming properties

4.1) Principle of the evaluation method

The evaluation of the foaming properties of the compositions tested is carried out by forming a foam, from a WHO hard water solution comprising a predetermined mass content of the compositions tested, by mechanical stirring at a temperature of 20 ° C.

4.2) Experimental protocol

250 cm ³ aqueous solutions are prepared so as to obtain solutions at 0.5% by mass of surfactant active material in WHO hard water, from the compositions Eo to E ₄ , and Fo to F ₂₄ , as described below. -above. WHO hard water contains, for one liter of deionized water, 0.403 grams of anhydrous calcium chloride and 0.139 grams of magnesium chloride hexahydrate; which gives it a hardness title equal to 34 ° Th.

These solutions are poured into a 500 cm ³ beaker and then they are stirred using a Rayneri ™ laboratory motor (model 33/300) equipped with a butterfly blade with three hollow branches at a constant speed of 3,000 revolutions. per minute for two minutes.

4.3) Expression of results

For each test, the following parameters are measured:

- The expansion time (Times): this is the duration of agitation after which we observe the removal of the vortex in the beaker. Beyond this time, the foam completely surrounds the stem of the pale and its level is horizontal;

- The half-life time (Ti _{/ 2} ): this is the time at the end of which the foam obtained from a certain volume of foaming solution has spun an amount of solution corresponding to half of the initial volume. For this test, the half-life time is reached when the upper level of the spin water reaches the 125 cm ^{3 mark} on the beaker;

- The height of foam generated by agitation (H _t0 ): this is the height of foam generated at the end of the two minutes of agitation;

- The residual foam height after thirty minutes (Hoo): this is the foam height observed after thirty minutes following the end of the two-minute agitation.

- The difference A _H = (H _t0 - Hoo) makes it possible to compare the quality of the foams generated by the different surfactants.

4.4) Results obtained

The results obtained for the aqueous solutions of active material in hard water OMS for the compositions of the compositions Eo to E ₆ , and Fo to F ₂₄ are indicated in Tables 10 to 15 below.

Table 10

Table 11

Table 12

Table 13

Table 14

Table 15 4.5) Analysis of the results

These results show that the compositions Ei to E ₆ according to the invention make it possible to prepare foams having all the qualities required to be used in a decontamination process of solid surfaces, since they are generated quickly, in a sufficient volume (> l00mm), stable (with a half-life of more than four hours).

Claims

1. Composition (C _D ) for decontamination of solid surfaces comprising for 100% of its mass

a) - From 35% to 99.3% by mass of water;

b) - From 0.5% to 40% by mass of at least one decontamination agent;

c) - From 0.1% to 10% by mass of at least one gelling and / or thickening agent (AG);

d) - From 0.1% to 15% by mass of a mixture (Mi) comprising for 100% of its own mass:

(i) - From 50% to 99% by mass, of a composition (Ci) comprising for 100% of its mass:

(a) - From 65% to 90% by mass of at least one compound of formula (I):

Ri -C (= 0) -NH-CH (C00H) - (CH ₂ ) ₂ -C00H (I)

(P) - From 10% to 35% by mass, of at least one compound of formula (II):

Ri-C (= 0) -OH (II)

(ü) - From 1% to 50% by mass of a composition (C ₂ ) comprising for 100% of its mass:

R ₃ -0- (G ₃ ) _p -H (III)

R ₄ -0- (G ₄ ) _q -H (V)

in which R ₄ represents a linear aliphatic radical, chosen from the radicals n-butyl (nC ₄ H9-), n-pentyl (n-CsHn-), n-hexyl (nC ₆ Hi ₃ -), n-heptyl (nC ₇ Hi ₅ -), G ₄ represents the remainder of a reducing sugar and q represents a decimal number greater than or equal to 1.05 and less than or equal to 5.

2. Composition (C _D ) according to claim 1, characterized in that the decontamination agent is chosen from the elements of the group consisting of acid agents in acid form, partially or totally salified decontamination; basic decontamination agents; disinfectants.

3. Composition (C _D ) according to one of claims 1 or 2, characterized in that the gelling and / or thickening agent is chosen from polysaccharides consisting of derivatives of oses, polysaccharides consisting only of oses, the cellulose and cellulose derivatives, starches and linear or branched or crosslinked polyelectrolytes.

4. Composition (CD) according to one of claims 1 to 3, characterized in that said composition (C ₃ ) consists of a mixture of compounds represented by the formulas (IIIi), (III ₂ ), (III ₃ ), (III ₄ ) and (III ₅ ):

R ₃ -0- (G ₃ ) _I -H (III _I ),

R ₃ -0- (G ₃ ) ₂ -H (III ₂ ),

R ₃ -0- (G ₃ ) ₃ -H (III ₃ ),

R ₃ -0- (G ₃ ) ₄ -H (III ₄ ),

R ₃ -0- (G ₃ ) ₅ -H (III5),

the sum: ai + a ₂ + a ₃ + a ₄ + a ₅ is equal to 1, and

the sum ai + 2a ₂ + 3a ₃ + 4a ₄ + 5a ₅ is equal to p.

5. Composition (CD) according to one of claims 1 to 4, characterized in that said composition (C ₄ ) consists of a mixture of compounds represented by the formulas (Vi), (V ₂ ), (V ₃ ), (V ₄ ) and (V ₅ ):

R ₄ -0- (G ₄ ) _I -H (V _I ),

R ₄ -0- (G ₄ ) ₂ -H (V ₂ ),

R ₄ -0- (G ₄ ) ₃ -H (V ₃ ),

R ₄ -0- (G ₄ ) ₄ -H (V ₄ ),

R ₄ -0- (G ₄ ) ₅ -H (V _S ),

in the respective molar proportions a'i, a ' ₂ , a' ₃ , a ' ₄ and a' ₅ , such that:

the sum: a'i + a ' ₂ + a' ₃ + a ' ₄ + a'5 is equal to 1, and the sum a'i + 2a' ₂ + 3a ' ₃ + 4a' ₄ + 5a ' ₅ is equal to q.

6. Composition (C _D ) according to one of claims 1 to 5, characterized in that the composition (C2) comprises:

- from 0% to 3% by mass of at least one alcohol of formula (IV):

FU-OH (IV)

in which FU is as defined in formula (III), and / or

- from 0% to 3% by mass of at least one alcohol of formula (VI):

FU-OH (VI)

in which R ₄ is as defined for formula (V).

7. Composition (CD) according to one of claims 1 to 6, characterized in that in the formulas (I) and (II) the group Ri-C (= 0) - represents an acyl radical chosen from octanoyl radicals, decanoyl, dodecanoyl, tetradecanoyl, hexadecanoyl, octadecanoyl, 9-octadecenoyl, 9, 12-octadecadienoyl and 9, 12, l5-octadecatrienoyl.

8. Composition (C _D ) according to one of claims 1 to 7, characterized in that said composition (C ₂ ) comprises per 100% of its mass:

(h) - A mass proportion of said alcohol of formula (VI) greater than or equal to 0% and less than or equal to 3%.

9. Composition (CD) according to one of claims 1 to 8, characterized in that in formulas (III) and (IV), FU represents a linear alkyl radical chosen from the n-dodecyl radicals (n-Ci ₂ H ₂ 5-), n-tetradecyl (n-Ci ₄ H ₂ 9-) and n-hexadecyl (n-Ci6H3 ₂ -).

10. Composition (CD) according to one of claims 1 to 9, characterized in that in the formulas (V) and (VI), R ₄ represents a linear alkyl radical chosen from the n-hexyl radicals (nC ₆ Hi ₃ ) and n-heptyle (nC ₇ Hi ₅ ) ..

11. Composition (C _D ) according to one of claims 1 to 10, characterized in that said composition (C ₂ ) comprises a mixture of compositions (C ₃ ) and compositions (C ₄ ), said mixture comprising for 100% of its mass:

(gi) - From 13.6% to 44.4% by mass of a composition (C ₃ ) represented by formula (III) in which R ₃ represents the radical (n-Ci ₂ H ₂ 5),

(g ₂ ) - From 5% to 16.25% by mass of a composition (C ₃ ) represented by formula (III) in which R ₃ represents the n-tetradecyl radical (n-Ci ₄ H ₂ 9), and

(ei) - From 35% to 80% by mass of a composition (C ₄ ) represented by the formula (V) in which R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ).

12. Composition (C _D ) according to one of claims 1 to 11, characterized in that the mass ratio:

D = Mass of compound (s) of formula (I) / [Mass of the composition (C ₃ ) + Mass of the composition (C ₄ )], is greater than or equal to 20/80 and less than or equal to 65/35 .

13. Composition (C _D ) according to one of claims 1 to 12, characterized in that the mass ratio:

Ai = Mass of the composition (C ₃ ) / Mass of the composition (C ₄ ) is greater than or equal to 20/80 and less than or equal to 70/30.

14. Composition (C _D ) according to one of claims 1 to 13, characterized in that at least one gelling and / or thickening agent (AG) is chosen from xanthan gum (Gx), the exudate of the acacia gum (G _A ), the mixture of xanthan gum (Gx) and acacia gum exudate (G _A ) in a mass ratio between xanthan gum (Gx) and exudate gum acacia (G _A ) greater than or equal to 1/3 and less than or equal to 3/1.

15. Composition (C _D ) according to one of claims 1 to 14, characterized in that at least decontamination agent is a disinfecting agent chosen from the elements of the group consisting of chlorinated products, aldehydes and oxidants.

16. Composition (C _D ) according to one of claims 1 to 15, characterized in that at least decontamination agent is an acid agent in acid form, partially or totally salified, chosen from the elements of the group consisting of hydrochloric acid, nitric acid, sulfuric acid, phosphoric acid, oxalic acid, benzoic acid, sorbic acid, dehydroacetic acid, peracetic acid.

17. Composition (C _D ) according to one of claims 1 to 15 characterized in that at least decontamination agent is a basic agent chosen from the elements of the group consisting of sodium hydroxide, potassium hydroxide, sodium carbonate, potassium carbonate.

18. Composition (C _D ) according to one of claims 1 to 15 characterized in that it comprises for 100% of its mass:

a) - From 35% to 99.3% water;

d) - From 0.1% to 15% by mass of said mixture (Mi) in which:

- In formula (III), FG represents a linear or branched, saturated or unsaturated aliphatic radical containing from 12 to 16 carbon atoms, G ₃ represents the remainder of glucose or xylose and p represents a decimal number greater than or equal to 1.05 and less than or equal to 2.5;

- In formula (IV), R3 represents a linear or branched, saturated or unsaturated aliphatic radical, comprising from 12 to 16 carbon atoms, - In formula (V), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ), G ₄ represents the remainder of glucose or xylose and q represents a decimal number greater than or equal to 1.05 and less than or equal at 2,

- In formula (VI), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ).

19. Composition (C _D ) according to one of claims 1 to 14 or 16, characterized in that it comprises for 100% of its mass:

a) - From 35% to 99.3% water;

d) - From 0.1% to 15% by mass of said mixture (Mi) in which:

- In formula (VI), R ₄ represents the n-heptyl radical (nC ₇ Hi ₅ ).

20. Method for decontaminating a solid surface, characterized in that it comprises:

- At least one step Ai of preparation of a foam obtained by mixing a composition (C _D ) as defined in any one of claims 1 to 19, with a gas or a mixture of gases, chosen from air, nitrogen or carbon dioxide, followed,

21. A method for decontaminating a solid surface as defined in claim 20 characterized in that it further comprises a step A ₃ of rinsing the solid surface obtained at the end of step A ?.