Compositions, home care formulations, methods and uses

Abstract

The present invention provides a composition comprising the reaction product of: a) itaconic anhydride; and b) an amino compound comprising at least one free amino group, wherein the amino compound is selected from hydrolyzed proteins; wherein the composition comprises an itaconic acid modified amino compound, wherein the itaconic acid modified amino compound is the reaction product of a) and b). In another embodiment, the amino compound is selected from the group consisting of amino acids, peptides, and hydrolyzed proteins. The invention further provides home care formulations, fabric conditioners or softeners comprising the compositions of the invention, methods of treating fibers and uses of the compositions.

Description

Field of the Invention

[0001] The present invention relates to compositions, home care formulations (such as fabric conditioners or softeners) comprising the compositions, methods of treating fibers with the compositions and the use of the compositions for providing benefits to fibers.

[0002] background

[0003] Fabric conditioners or softeners have been used for many years as home care formulations, particularly for improving the properties of fabrics such as laundry after laundering.

[0004] Non-limiting examples of fabric conditioners are provided in EP2029712, which discloses aqueous rinse cycle concentrated fabric softener formulations which can be diluted with water prior to use to provide a physically stable softener composition in concentrated and diluted form.

[0005] There is a desire to remove fossil fuel based ingredients from such products to improve the environmental profile of these products.

[0006] It is an object of the present invention to address at least one of the disadvantages associated with the prior art. SUMMARY OF THE INVENTION

[0007] The present invention is based in part on the surprising recognition that the reaction products of itaconic anhydride and a compound containing an amino acid, in particular a hydrolyzed protein, can prepare a composition that is beneficial for the treatment of fibers, such as textile fibers, in processes such as laundry processes. The fibers can form part or all of a woven or nonwoven fabric or garment. In particular, the compositions of the present invention can be used as fabric or fiber benefit agents in home care formulations such as fabric conditioners or softeners. The compositions of the present invention can be used in methods for treating fibers and / or fabrics, such as laundry methods or processes. The benefits provided by the compositions of the present invention can be selected from fabric conditioning, easy ironing, color protection, print protection, odor neutralization, fragrance enhancement, fabric strength retention, and shape retention.

[0008] Thus, viewed from a first aspect, the invention provides a composition comprising the reaction product of:

[0009] a) itaconic anhydride; and

[0010] b) an amino compound comprising at least one free amino group, wherein said compound is selected from the group consisting of amino acids, peptides and hydrolyzed proteins;

[0011] wherein the composition comprises an itaconic acid modified amino compound, wherein the itaconic acid modified amino compound is the reaction product of a) and b), and wherein the amount of itaconic anhydride used in the reaction is calculated to react with 1 mol % to 100 mol % of the free amino groups of the amino compound, preferably calculated by formaldehyde titration as described herein.

[0012] Viewed from a second aspect, the invention provides a composition comprising the reaction product of:

[0013] a) itaconic anhydride; and

[0014] b) an amino compound comprising at least one free amino group, wherein the amino compound is selected from hydrolyzed proteins;

[0015] The composition comprises an itaconic acid-modified amino compound, wherein the itaconic acid-modified amino compound is a reaction product of a) and b).

[0016] The composition of the present invention may have the advantage of not comprising any reactants obtained from petrochemical sources. Itaconic anhydride may be obtained from renewable sources. Itaconic anhydride may be obtained from citric acid. Itaconic anhydride may be obtained from biological sources, preferably from microbial sources. The amino compound may be obtained from renewable sources, preferably from renewable protein sources.

[0017] Viewed from a third aspect, the present invention provides a home care formulation comprising a composition of the first or second aspect. Preferably, the home care formulation is a fabric conditioner or softener.

[0018] Viewed from a fourth aspect, the present invention provides a method of treating fibers, preferably textile fibers, in particular a method of fabric conditioning, comprising the step of applying a composition according to the first or second aspect to the fibers and / or fabric. The method may be part of a laundry method or process.

[0019] From a fifth aspect, the present invention provides the use of a composition according to the first or second aspect of the present invention for treating fibers and / or fabrics to provide benefits to the fibers and / or fabrics. The benefits may be selected from fabric conditioning, easy ironing, color protection, print protection, odor neutralization, fragrance enhancement, fabric strength retention and shape retention. The use may be part of a laundry method or process.

[0020] All features described herein may be combined with any of the above aspects in any combination. DETAILED DESCRIPTION OF THE INVENTION

[0022] It is to be understood that any amount or upper or lower range limits used herein may be independently combined.

[0023] Many chemicals that can be used to prepare the compositions of the present invention are obtained from natural sources. Such chemicals, due to their natural sources, generally include mixtures of chemical substances. Due to the presence of such mixtures, the various parameters defined herein may be average values ​​and may be non-integer values.

[0024] It should be understood that when describing the number of carbon atoms in a substituent group (e.g., "C1 to C6"), this number refers to the total number of carbon atoms present in the substituent group, including any carbon atoms present in any branching groups. In addition, when describing the number of carbon atoms in, for example, a fatty acid, this refers to the total number of carbon atoms, including the carbon atoms at the carboxylic acid and any carbon atoms present in any branching groups.

[0025] The term "residue" as used herein is the portion of a reactant molecule that remains in a reaction product compound after a reaction has occurred.

[0026] The term "hydrolyzed protein" is used herein to refer to a protein that has been hydrolyzed. Hydrolyzed protein can include protein fragments, polypeptides, peptides, amino acids and / or peptones. Hydrolyzed protein can be produced by acid hydrolysis, alkaline hydrolysis and / or enzymatic hydrolysis of a protein (preferably a naturally occurring protein or a protein from a renewable source). Enzymatic hydrolysis is preferred. Without being bound by theory, when compared with acid hydrolysis or alkaline hydrolysis, the advantage of enzymatic hydrolysis is that enzymatic hydrolysis is more selective to the site on the hydrolyzed protein, so when compared with acid hydrolysis or alkaline hydrolysis, an improved amino compound for the preparation of the composition of the present invention is produced. Typically, acid hydrolysis can produce the smallest fragment by weight average molecular weight, alkaline hydrolysis can produce the largest fragment, and enzymatic hydrolysis can produce a medium-sized fragment between acid hydrolysis and alkaline hydrolysis. The size of the fragment in the hydrolyzed protein is directly proportional to the number of amino acid residues in the fragment, because the fragment is from the long amino acid chain that constitutes the unhydrolyzed protein. Acid hydrolysis may be disadvantageous due to the need for high temperature and / or high pressure. Alkaline hydrolysis can be disadvantageous due to the need to use harsh or hazardous chemicals.

[0027] The amino compound used to prepare the composition of the present invention may be a chemically unmodified hydrolyzed protein. The term "chemically unmodified hydrolyzed protein" refers to a protein that has not been further chemically modified (or reacted) besides being hydrolyzed.

[0028] The amino compound used to prepare the composition of the present invention may be a partially hydrolyzed protein. The term "partially hydrolyzed protein" refers to a protein that has not been completely hydrolyzed, ie, has not been hydrolyzed to the extent that only a single amino acid remains in the amino compound.

[0029] As used herein, the term "home care formulation" refers to consumer products for use by household and / or institutional consumers for cleaning, care or conditioning the home or its contents (e.g., fabrics). Home care formulations include, but are not limited to, detergents, including laundry detergents and dishwashing detergents; conditioners, including fabric conditioners; cleaning formulations, including hard surface cleaners; polishes and floor finishes.

[0030] Compositions of the present invention

[0031] The composition of the present invention comprises the reaction product of:

[0032] a) itaconic anhydride; and

[0033] b) an amino compound comprising at least one free amino group, wherein the amino compound is selected from hydrolyzed proteins;

[0034] The composition comprises an itaconic acid-modified amino compound, wherein the itaconic acid-modified amino compound is a reaction product of a) and b).

[0035] Viewed from another aspect, the composition of the invention comprises the reaction product of:

[0036] a) itaconic anhydride; and

[0037] b) an amino compound comprising at least one free amino group, wherein said compound is selected from the group consisting of amino acids, peptides and hydrolyzed proteins;

[0038] wherein the composition comprises an itaconic acid modified amino compound, wherein the itaconic acid modified amino compound is the reaction product of a) and b), and wherein the amount of itaconic anhydride used in the reaction is calculated to react with 1 mol % to 100 mol % of the free amino groups of the amino compound. Preferably, the amount of itaconic anhydride required is calculated by formaldehyde titration as described herein.

[0039] Preferably, the composition also comprises water. The composition may comprise at least 10% by weight of water, preferably at least 20% by weight of water, more preferably at least 30% by weight of water, particularly at least 40% by weight of water, desirably at least 50% by weight of water, especially at least 60% by weight of water, based on the total weight of the composition. The composition may comprise up to 90% by weight of water, preferably up to 80% by weight of water, based on the total weight of the composition.

[0040] The composition may also include itaconic acid. Itaconic acid may be formed by a small amount of side reaction of itaconic anhydride with water. This side reaction may reduce the amount of itaconic anhydride that actually reacts with the free amino groups of the amino compound by a small amount when compared to the theoretical amount calculated by formaldehyde titration as described herein. It is therefore preferred to minimize the side reaction of itaconic anhydride with water by selecting suitable reaction conditions. Preferably, the amount of itaconic anhydride added to react with the amino compound is the calculated theoretical amount to react with a specified mole % of amino groups in the amino compound. Preferably, the theoretical amount is calculated by formaldehyde titration.

[0041] Itaconic anhydride can be obtained from renewable sources. Preferably, itaconic anhydride is not obtained from petrochemical sources. Itaconic anhydride can be obtained from citric acid. Itaconic anhydride can be obtained from a biological source, preferably from a microbial source. Preferably, itaconic anhydride is substantially pure itaconic anhydride, such as at least 85 wt % itaconic anhydride, preferably at least 90 wt % itaconic anhydride, more preferably at least 95 wt % itaconic anhydride.

[0042] Preferably, the amino compound is obtained from a renewable source. Preferably, the amino compound is not obtained from an animal protein source. This is advantageous because animal sources may be undesirable for consumers. Preferably, the composition does not contain components of animal origin. Preferably, the composition does not contain components of petrochemical origin. According to ASTM D6866, preferably, the carbon-containing portion of the composition is at least 80% biobased, more preferably at least 90%, particularly at least 95%, desirably at least 99%, especially 100% biobased based on the total weight of the carbon-containing portion of the composition. Preferably, the composition is suitable for vegan consumers.

[0043] Preferably, the amino compound comprises hydrolyzed protein, more preferably consists essentially of hydrolyzed protein, more preferably, the amino compound is hydrolyzed protein. The hydrolyzed protein can be produced by acid, alkali or enzymatic hydrolysis. Enzymatic hydrolysis is preferred. One or more enzymes can be used. The enzyme is preferably not of animal origin. Preferably, the enzyme is from a microbial source. (Multiple) enzymes can include carbohydrases and / or proteases. Preferably, the enzyme includes a protease. The hydrolysis can be carried out to the extent required to achieve the desired weight average molecular weight of the hydrolyzed protein. The extent of hydrolysis can be changed by changing the temperature, the acid / alkali / enzyme used and the time used. The resulting hydrolyzed protein can be filtered and / or treated to remove undesirable materials. For example, if acid hydrolysis is used, the hydrolyzed protein can be treated to remove any chloride ions present.

[0044] The hydrolyzed protein can be obtained from a natural source. The hydrolyzed protein can be obtained from a renewable source. Preferably, the hydrolyzed protein is a hydrolyzed vegetable protein. The vegetable protein can be selected from potato, wheat, cottonseed, pea, chickpea and soybean, preferably selected from potato, wheat, pea and chickpea, more preferably selected from potato and chickpea. Preferably, the amino compound is a hydrolyzed potato or chickpea protein. The composition may not contain hydrolyzed wheat protein or protein obtained from a wheat source. This may be advantageous because wheat protein may be undesirable for some consumers.

[0045] Preferably, the amino compound comprises oligomers of amino acids, which may also be referred to as oligopeptides. These oligomers may be hydrolyzed protein fragments. The amino compound may comprise oligomers having an average size of 2 to 20 amino acids (also referred to as residues), preferably oligomers of 2 to 15 amino acids, more preferably oligomers of 2 to 10 amino acids. Preferably, the average size is a weight average size. The amino acids in the oligomer may be identical or different amino acids. The amino acids in the oligomer preferably include at least one glutamic acid residue or histidine residue, more preferably include at least one glutamic acid residue. The amino compound may not be a single amino acid. Preferably, the amino compound is not composed of a single amino acid. Alternatively, the amino compound may include glutamic acid or histidine as a single amino acid, preferably glutamic acid.

[0046] The weight average molecular weight (Mw) of the amino compound can be at least 200 Daltons (Da), preferably at least 300 Da, more preferably at least 400 Da. The weight average molecular weight of the amino compound can be up to 50,000 Da, preferably up to 20,000 Da, more preferably up to 10,000 Da, more preferably up to 5,000 Da. The weight average molecular weight of the amino compound can be up to 2,500 Da, preferably up to 2,000 Da, more preferably up to 1,500 Da. The molecular weight can be measured by size exclusion chromatography, preferably by size exclusion HPLC (SE-HPLC) as described in the test method below. Preferably, the amino compound has a weight average molecular weight in the range of 200 Da to 5000 Da, preferably a weight average molecular weight in the range of 200 Da to 3000 Da, preferably a weight average molecular weight in the range of 200 to 1500 Da.

[0047] Preferably, the composition of the present invention is substantially free of quaternary ammonium compounds. The term "substantially free" is used to mean that the composition comprises preferably less than 10 wt %, more preferably less than 5 wt %, more preferably less than 2 wt % and most preferably less than 1 wt % based on the total weight of the composition. Preferably, the composition does not contain quaternary ammonium compounds.

[0048] Preferably, the composition of the present invention is substantially free of silicone compounds. The term "substantially free" is used to mean that the composition comprises preferably less than 10 wt%, more preferably less than 5 wt%, more preferably less than 2 wt% and most preferably less than 1 wt%, based on the total weight of the composition. Preferably, the composition does not contain silicone compounds. Preferably, the composition does not contain organosilanes, organosilicones or silicone compounds.

[0049] The composition can also include one or more preservatives. The composition can include at least 0.1% by weight preservative based on the gross weight of the composition, preferably at least 0.2% by weight, more preferably at least 0.4% by weight, particularly at least 0.6% by weight. The composition can include at most 10% by weight preservative based on the gross weight of the composition, preferably at most 5% by weight, more preferably at most 3% by weight, particularly at most 2% by weight. The preservative can include phenoxyethanol, benzoate or sorbate, more preferably, the preservative is selected from benzoate and sorbate, more preferably, the preservative includes sodium benzoate and / or potassium sorbate. Alternatively, the composition may not include a preservative.

[0050] The composition may be a liquid at room temperature (25°C). The composition may be a solution or dispersion of the itaconic acid-modified amino compound in a solvent, preferably a solution, and preferably, the solvent comprises water.

[0051] Alternatively, the composition may contain no water, or may contain residual water after drying to a solid or powder form. Spray drying may be used to dry the composition. The composition may be a solid or a powder.

[0052] The ratio of reactants

[0053] The reactants of the composition of the present invention include:

[0054] a) itaconic anhydride; and

[0055] b) an amino compound comprising at least one free amino group, wherein said compound is selected from the group consisting of amino acids, peptides and hydrolyzed proteins;

[0056] The composition comprises an itaconic acid-modified amino compound, wherein the itaconic acid-modified amino compound is the reaction product of a) and b), and wherein the amount of itaconic anhydride used is calculated to react with 1 mol % to 100 mol % of the free amino groups of the amino compound.

[0057] The ratio of reactants can surprisingly affect the properties of the composition of the present invention. In the itaconic acid modified amino compound, preferably at least 2 mol%, more preferably at least 5 mol%, more preferably at least 10 mol%, more preferably at least 15 mol%, more preferably at least 20 mol% of the free amino groups in the amino compound react with itaconic anhydride. In the itaconic acid modified amino compound, preferably at most 99 mol%, more preferably at most 98 mol%, more preferably at most 95 mol%, more preferably at most 90 mol%, more preferably at most 80 mol%, more preferably at most 70 mol%, more preferably at most 60 mol%, more preferably at most 50 mol%, more preferably at most 40% of the free amino groups in the amino compound react with itaconic anhydride. Preferably, the amount of itaconic anhydride used is calculated to react with 5 mol% to 70 mol% of the free amino groups in the amino compound. More preferably, the amount of itaconic anhydride used is calculated to react with 20 mol% to 50 mol% of the free amino groups in the amino compound. Preferably, the calculation is carried out by formaldehyde titration as described herein.

[0058] Home Care Preparations

[0059] Preferably, the composition of the present invention is suitable for use in home care formulations. From a second aspect, the present invention provides a home care formulation comprising a composition of the present invention. The home care formulation can be selected from fabric detergents (in liquid, powder, concentrate, unit dose or sheet form), fabric conditioners or softeners (in liquid, powder, concentrate, unit dose or sheet form), fabric washing additives (such as solid or liquid laundry aids), fabric odor enhancers (in liquid, gel, sheet, powder or granule form), fresh sprays, fabric sprays, solid detergent bars, air care products, cleaning products, fabric detergents, stain removers, hard surface cleaners, hand dishwashing detergents, machine dishwashing detergents, polishes and floor finishes. Preferably, the home care formulation is selected from fabric conditioners or softeners, fabric detergents, fabric washing additives, fabric odor enhancers, fresh sprays, air care products and cleaning products. Preferably, the home care formulation is a fabric conditioner or softener.

[0060] Home care formulations, preferably fabric conditioners or softeners, may comprise a composition according to the present invention and at least one additional home care ingredient. The home care ingredient may be selected from detergents, surfactants, ironing aids, drying additives, builders, chelating agents, dye transfer inhibitors, dispersants, enzymes, enzyme stabilizers, catalytic materials, bleaching agents, bleach activators, hydrogen peroxide, hydrogen peroxide sources, preformed peracids, polymer dispersants, soil removal / anti-redeposition agents, brighteners, foam suppressors, dyes, fabric softening compounds, carriers, structurants, hydrotropes, processing aids, solvents and / or pigments and mixtures thereof. Preferably, the home care ingredient is selected from the group consisting of surfactants, builders, chelating agents and fabric softening compounds. The home care formulation may comprise a composition according to the present invention and at least one surfactant. The at least one surfactant may be selected from anionic, cationic, nonionic and zwitterionic surfactants, preferably anionic and cationic surfactants.

[0061] The home care formulation may comprise 0.01 to 10 wt % of the itaconic acid modified amino compound based on the total weight of the formulation. Preferably, the home care formulation comprises at least 0.02 wt %, more preferably at least 0.05 wt %, more preferably at least 0.1 wt %, more preferably at least 0.2 wt % of the itaconic acid modified amino compound based on the total weight of the formulation. Preferably, the home care formulation comprises at most 20 wt %, more preferably at most 15 wt %, more preferably at most 10 wt %, more preferably at most 5 wt % of the itaconic acid modified amino compound based on the total weight of the formulation.

[0062] Fabric conditioner or fabric softener preparations

[0063] Preferably, the home care formulation comprising the composition of the present invention is a fabric conditioner or fabric softener. The fabric conditioner or softener comprises an active material or agent that conditions or softens fabrics. These compounds may be referred to as fabric softening compounds and may be any material known to soften fabrics. Preferably, the fabric conditioner or softener also comprises a fabric softening compound.

[0064] The fabric conditioner or softener may comprise 0.01 to 10 wt % of the itaconic acid modified amino compound based on the total weight of the formulation. Preferably, the fabric conditioner or softener comprises at least 0.02 wt %, more preferably at least 0.05 wt %, more preferably at least 0.1 wt %, more preferably at least 0.2 wt % of the itaconic acid modified amino compound based on the total weight of the formulation. Preferably, the fabric conditioner or softener comprises at most 20 wt %, more preferably at most 15 wt %, more preferably at most 10 wt %, more preferably at most 5 wt % of the itaconic acid modified amino compound based on the total weight of the formulation.

[0065] Preferably, the fabric conditioner or softener formulation comprises a composition according to the present invention and a fabric softening compound. Preferably, the fabric softening compound is selected from quaternary ammonium compounds, polysaccharides, clays, amines, fatty esters, dispersible polyolefins, polymer latexes and mixtures thereof, more preferably selected from quaternary ammonium compounds, polysaccharides, amines and fatty esters. Preferably, the fabric conditioner or softener formulation comprises a quaternary ammonium compound.

[0066] Alternatively, the fabric conditioner or softener formulation may be substantially free of quaternary ammonium compounds. The term "substantially free" is used to mean that the formulation contains preferably less than 10 wt %, more preferably less than 5 wt %, more preferably less than 2 wt % and most preferably less than 1 wt % based on the total weight of the formulation of quaternary ammonium compounds. The fabric conditioner or softener formulation may not contain quaternary ammonium compounds.

[0067] Fabric softening compounds can preferably be cationic or nonionic. Preferably, fabric softening compounds of the present invention are cationic. Suitable cationic fabric softening compounds are as follows. Fabric conditioners or softener formulations for use according to the present invention can be diluted or concentrated. Diluted formulations typically contain up to about 6% by weight, typically about 1 to 5% by weight of fabric softening compounds based on the total weight of the formulation, while concentrated formulations can contain up to about 50% by weight, preferably about 5 to about 50% by weight, more preferably 6 to 25% by weight of fabric softening compounds based on the total weight of the formulation. In general, fabric conditioners or softeners can contain 1 to 50% by weight, preferably 2 to 25% by weight of softening compounds, more preferably 2 to 20% by weight of softening compounds based on the total weight of the formulation.

[0068] Cationic fabric softening compounds

[0069] Cationic fabric softening compounds for use in fabric conditioner or fabric softener formulations of the present invention are typically quaternary ammonium compounds ("QACs"). Preferred QACs have two C 12-28 Group, the C 12-28 The groups may independently be alkyl or alkenyl groups, preferably connected to the nitrogen head group via at least one ester bond, and more preferably via two ester bonds. The average chain length of the alkyl and / or alkenyl groups is preferably at least C 14 and more preferably at least C 16 It is particularly preferred that at least half of the groups have C 18 Typically, the alkyl and / or alkenyl groups are predominantly linear.

[0070] A first group of QACs suitable for use in the present invention is represented by formula (I):

[0071]

[0072] Wherein each R is independently selected from C 5-35 Alkyl or alkenyl group; R 1 Represents C 1-4 Alkyl, C 2-4 Alkenyl or C 1-4 a hydroxyalkyl group; T is typically O-CO. (i.e., an ester group bonded to R via its carbon atom), but may alternatively be CO.O (i.e., an ester group bonded to R via its oxygen atom); n is a number selected from 1 to 4; m is a number selected from 1, 2 or 3; and X - is an anionic counterion such as a halide or an alkyl sulfate, for example chloride or methyl sulfate. The diester variant of formula I (i.e. m=2) is preferred and generally has monoester and triester analogs associated therewith. Such materials are particularly suitable for use in the present invention.

[0073] A particularly preferred agent is the diester of triethanolammonium methylsulfate, also known as "TEA esterquat." Commercial examples include Prapagen TQL from Clariant and Tetranyl AHT-1 from Kao (both di-[hardened tallow ester] of triethanolammonium methylsulfate), AT-1 (di-[tallow ester] of triethanolammonium methylsulfate) and L5 / 90 (di-[palmityl ester] of triethanolammonium methylsulfate), both from Kao, and Rewoquat WE15 from Witco Corporation (having a quaternary ammonium ester derived from C 10 -C 20 and C 16 -C 18 triethanolammonium methylsulfate diester of fatty acyl residues of unsaturated fatty acids).

[0074] A second group of QACs suitable for use in the present invention is represented by formula (II):

[0075]

[0076] Each R 1 The groups are independently selected from C 1-4 Alkyl, hydroxyalkyl or C 2-4 alkenyl group; and wherein each R 2 The groups are independently selected from C 8-28 alkyl or alkenyl group; and wherein n, T and X- are as defined above. Preferred materials of this second group include 1,2-bis[tallow acyloxy]-3-trimethylammonium propane chloride, 1,2-bis[hardened tallow acyloxy]-3-trimethylammonium propane chloride, 1,2-bis[oleoyloxy]-3-trimethylammonium propane chloride and 1,2-bis[stearoyloxy]-3-trimethylammonium propane chloride. Such materials are described in US4137180. Preferably, these materials also contain a certain amount of the corresponding monoesters.

[0077] A third group of QACs suitable for use in the present invention is represented by formula (III):

[0078] (R 1 )2-N + -[(CH2) n -TR 2 ]2 X - (III)

[0079] Each R 1 The groups are independently selected from C 1-4 Alkyl or C 2-4 alkenyl group; and wherein each R 2 The groups are independently selected from C 8-28 an alkyl or alkenyl group; and n, T, and X - As defined above. Preferred materials of this third group include bis(2-tallowyloxyethyl)dimethylammonium chloride and hardened forms thereof.

[0080] A fourth group of QACs suitable for use in the present invention is represented by formula (IV):

[0081] (R 1 )2-N + -(R 2 )2 X - (IV)

[0082] Each R 1 The groups are independently selected from C 1-4 Alkyl or C 2-4 alkenyl group; and wherein each R 2 The groups are independently selected from C 8-28 an alkyl or alkenyl group; and X - As defined above. Preferred materials of this fourth group include di(hardened tallow) dimethyl ammonium chloride.

[0083] Cationic softening compounds are typically present in fabric conditioner or softener formulations at levels of 2% to 75% by weight of the total formulation. For better softening effects, the level may be 8% or more, and for particularly high performance, the level may be 11% or more. The level of cationic softening compounds is most preferably 10 to 30% by weight of the total formulation, for example 12.5 to 28% by weight.

[0084] The level of cationic softening compound referred to in this specification refers to the total level of cationic softening compound, including all cationic components of the composite raw material which may enter the aqueous lamellar phase together. In the case of a diester softener, this includes any associated monoester or triester components which may be present.

[0085] Cationic cross-linked polymers

[0086] Fabric conditioner or softener formulation can comprise cationic crosslinked polymer.Cationic crosslinked polymer can be obtained by polymerization of cationic vinyl addition monomers of 5 to 100 mole percent, acrylamide of 0 to 95 mole percent and difunctional vinyl addition monomer crosslinking agent of 50 to 1000ppm.Preferred polymer is the crosslinked copolymer of acrylamide and methacrylate and difunctional vinyl addition monomer (such as methylene bis acrylamide).Particularly preferred polymer is the crosslinked copolymer of about 20% acrylamide and about 80% MADAM methyl chloride (MADAM is dimethylaminoethyl methacrylate) and 450 to 600ppm methylene bis acrylamide.Such material can be purchased from SNF Floerger with trade name Flosoft200 and Flosoft 222.

[0087] Supplementation of cationic polymers

[0088] Fabric conditioner or softener formulations may also include additional cationic polymers to assist viscosity control. Such polymers are typically used in an amount less than the above-mentioned cationic cross-linked polymer, for example in a weight ratio of 1:2 to 1:5 of supplementary polymer: cationic cross-linked polymer. Suitable supplementary polymers include non-acrylamide-based polymers such as Rheovis CDE commercially available from Ciba Speciality Chemicals.

[0089] Electrolytes

[0090] There may be trace amounts of electrolytes such as NaCl present in the raw materials used to form the fabric conditioner or softener formulation. However, additional electrolytes may be added. The added electrolyte may be present in an amount effective to provide a viscosity in the range of 300 to 1000 mPa.s at 25°C. The exact concentration depends on the selected electrolyte and is generally in the range of 0.001 to 0.2% by weight of the formulation, preferably in the range of 0.001 to 0.1% by weight, more preferably in the range of 0.001 to 0.05% by weight. The preferred electrolyte is CaCl2, but other electrolytes such as MgCl2, NaCl, etc. may be used.

[0091] Fatty co-active

[0092] A preferred additional ingredient in fabric conditioner or softener formulations is a fat co-active agent. Such agents typically have C8 to C 22 Suitable fatty co-activators include C8 to C 22 Fatty alcohols and C8 to C 22 Fatty acids; among them, C8 to C22 Fatty alcohols are most preferred. For reasons of product stability and effectiveness, fatty co-active agents are preferred for those containing a single C 12-28 Combinations of QACs of the group (such as monoesters related to TEA esterquats or softeners of formula II) are particularly valuable. Preferred fatty acid co-actives include hardened tallow fatty acids (available as the Pristerene series from Uniqema).

[0093] Preferred fatty alcohol co-actives include hardened tallow alcohol (available as Stenol and Hydrenol from Cognis and Laurex CS from Albright and Wilson) and behenyl alcohol (a C 22 Fatty alcohols, available as Lanette 22 from Henkel). These co-active agents can be used at 0.1 to 10% by weight, preferably at 0.5 to 5% by weight and in particular at 0.75 to 2% by weight, based on the total weight of the formulation.

[0094] Other co-actives, such as fatty esters and fatty N-oxides may be used with the cationic softening compounds. When used, they are generally present at 0.1 to 20% and especially 0.5 to 10% based on the total weight of the formulation.

[0095] Fatty esters that may be used include fatty monoesters such as glyceryl monostearate, fatty sugar esters such as those disclosed in WO 01 / 46361.

[0096] spices

[0097] Preferably, the fabric conditioner or softener further comprises a perfume. The perfume is preferably present in an amount of 0.01 to 10 wt %, more preferably 0.05 to 5 wt %, most preferably 0.5 to 4.0 wt %, based on the total weight of the formulation.

[0098] Additional optional ingredients

[0099] The fabric conditioner or softener formulations of the present invention may contain one or more other ingredients. Such ingredients include preservatives (e.g., bactericides), pH buffers, perfume carriers, sunscreens, pearlescent agents, fluorescent agents, colorants, hydrotropes, defoamers, anti-redeposition agents, detergents, polyelectrolytes, enzymes, fluorescent brighteners, anti-shrinkage agents, anti-wrinkle agents, anti-spot agents, antioxidants, sunscreens, anti-corrosion agents, drape imparting agents, antistatic agents, detergents, ironing aids, and drying additives. Preferably, the fabric conditioner or softener further comprises a compound selected from detergents, ironing aids, and drying additives.

[0100] Particularly preferred optional ingredients are sunscreen or pearlescent agents. Such ingredients can be used to further enhance the creamy appearance of the composition of the present invention. Suitable materials can be selected from Aquasol OP30X series (from Rohm andHaas), PuriColour White series (from Ciba) and LameSoft TM series (from Cognis). Such materials are usually used at a level of 0.01 to 1% by weight of the total composition.

[0101] Aqueous base

[0102] The home care formulations of the present invention are usually aqueous. The aqueous matrix usually contains 80% by weight or more of water; sometimes this figure can rise to 90% or more. The water in the aqueous matrix usually accounts for 40% by weight or more of the total formulation; preferably, this figure is 60% or more, more preferably, it is 70% or more.

[0103] Fabric conditioner or softener use

[0104] The fabric conditioner or softener formulation of the present invention can be used in the rinse cycle of a laundry process, preferably a domestic laundry process. The fabric conditioner formulation is preferably used in the rinse cycle of a domestic fabric laundry process, wherein it can be added directly to the washing machine, for example through a dispenser drawer, or for a top loading washing machine, directly into the drum. The composition can also be used in a domestic hand wash laundry process.

[0105] The fabric conditioner or softener formulation may be in liquid, spray, solid or powder form.The fabric conditioner or softener formulation may be used as the primary fabric conditioner or softener formulation in the wash cycle or as an auxiliary formulation to support the primary formulation.

[0106] Method for treating fibers and / or fabrics

[0107] Viewed from another aspect, the invention provides a method of treating a fiber comprising the step of applying to the fiber a composition according to any one of claims 1 to 8. The fiber may be part of a fabric. The fiber may be part of an item of clothing or a garment. The method of treating the fiber may occur during a laundry cycle. The method may impart a benefit to the fiber or fabric. The benefit may be selected from fabric conditioning, easy ironing, color protection, print protection, fragrance enhancement, odor neutralization, fabric strength retention and shape retention, fabric softness, faster drying, faster ironing, improved wicking / wetting, reduced static, anti-stain deposition, whiteness protection, stain resistance, reduced irritation, reduced friction, reduced fiber shedding or microplastic release, improved drape, improved touch, improved comfort.

[0108] In this specification, fabric conditioning may refer to conditioning or softening fabrics. Easy ironing may refer to a fabric or garment that can be easily ironed. Color protection may refer to protecting or preserving the color of a fabric or garment during a wash cycle. Print protection may refer to protecting or preserving the print on a fabric or garment during a wash cycle. Fragrance enhancement may refer to improving the performance of a fragrance in a formulation used to treat fibers. Odor neutralization may refer to neutralizing malodors lingering in fibers. Fabric strength retention and shape retention may refer to maintaining or preserving the strength or shape of a fabric or garment.

[0109] Use of the composition for treating fibers and / or fabrics

[0110] Viewed from a further aspect the invention provides the use of a composition according to the invention for treating fabrics to provide a benefit to the fabric, preferably a benefit selected from fabric conditioning, ease of ironing, colour protection, print protection, fragrance enhancement, odour neutralisation, fabric strength maintenance and shape retention.

[0111] The composition of the present invention can be used in a pet care formulation. The pet care formulation can be a pet shampoo or conditioning formulation or a pet malodor treatment agent. Example

[0112] The present invention is illustrated by the following non-limiting examples. Unless otherwise stated, all parts and percentages are given by weight. It should be understood that unless otherwise stated herein, or unless otherwise stated in the test methods and procedures referenced, all tests and physical properties listed are determined at atmospheric pressure and ambient temperature (i.e., about 23°C).

[0113] Test Method

[0114] The following test methods were used in this specification:

[0115] (i) Viscosity is measured at room temperature (25°C) with a Brookfield Ametek DV-1 viscometer using a suitable spindle (TC stick). The samples are tested at 10 rpm (0.17 Hz) for 1 minute immediately after sample preparation and 24 hours after sample preparation, and the results are expressed in cP (mPa.s).

[0116] (ii) Formaldehyde titration, a titration method for determining the degree of substitution of amino groups, described by Cobbett, WG, Gibbs, JA and Leach, AA (1964). J. Appl. Chem. (London), 14, 296-302.

[0117] (iii) pH was measured at room temperature (25°C) using a Fisher Scientific Accumet AE150 pH meter. Based on the initial pH reading, the pH of the formulation was adjusted to a range of 4.0-5.0 using 10 wt% sodium hydroxide solution (if the pH was lower) or 10 wt% citric acid solution (if the pH was higher). The pH was measured immediately after preparation of the formulation and 24 hours after preparation of the formulation.

[0118] (iv) The active substance content (in % by weight) in the sample is calculated by measuring the total non-volatile content and the ash content. The total non-volatile content measurement is performed on a sample of known weight by oven drying at 105°C for 17-19 hours to remove the moisture and any other volatile components present. After cooling in a desiccator, the residual weight is used to calculate the total non-volatile content (in % by weight) of the sample. For the ash content, a sample of known weight is carefully heated to a temperature of 575–600°C using increasing temperature steps in the presence of air and maintained at temperature for 16–18 hours (or longer if necessary). After cooling in a desiccator, the residual weight is used to calculate the ash content (in % by weight) of the sample. The active substance content (in % by weight) in the sample is then calculated by subtracting the weight % of ash from the weight % of the total non-volatile content.

[0119] (v) Weight average molecular weight was determined by size exclusion high performance liquid chromatography (SE-HPLC). The HPLC equipment and settings used are provided in Table 1.

[0120] Table 1: HPLC equipment and settings

[0121] (vi) Easy Ironing Test was conducted in a controlled environment room (50% relative humidity, temperature 22°C) using a tensile tester (Lloyd LRX) equipped with an ironing board attachment and a 10N load cell connected to a hot iron using the Running Limit Tension Method (250 mm at 800 mm / min). 100% cotton pieces (50 cm x 60 cm) were first prepared for testing by washing in a washing machine (Miele W1) cotton cycle at 60°C with a non-biological powder detergent (70 ml) and cotton ballast (2 kg), followed by drying in a tumble dryer (Indesit ID75) at high temperature for 1 hour. The cotton samples were then treated by washing in a washing machine cotton cycle at 40°C with a non-biological powder detergent (70 ml) and fabric conditioner (25 ml) and cotton ballast (2 kg), and allowed to air dry in the controlled environment room for at least 12 hours. The cotton sample is then placed on an ironing board while a hot iron is attached to the tensile tester on top. The tensile tester then pulls the iron through the sample and records the ultimate work (in joules). This process is repeated three times and the average ultimate work is recorded. The average percent change compared to the control is then calculated.

[0122] (vii) Shape retention testing was performed using a tensile testing machine (Lloyd LRX) equipped with a 500N load cell connected to a large sample clamp using the run-relaxation method (15 N at 800 mm / min, hold for 1 min before relaxation). The garments to be tested were treated by washing in a washing machine (Miele W1) at 40°C with non-biological powder detergent (70 ml) and fabric conditioner (25 ml) and cotton ballast (2 kg), followed by drying in a tumble dryer (Indesit ID75) at high temperature for 1 hour. The wash-dry cycle was repeated 9 more times. Samples of the garments were prepared by cutting the fabric into strips (16 cm x 3 cm) and marking the test area (10 cm long, 5 cm on each side of the center), then the test piece was clamped into the tensile testing machine and the sample was stretched according to the relaxation method. After the run was completed, the test area was remeasured and the difference in the length and width of the test area was calculated. The measurement was repeated on three samples and the average percentage difference from the control was calculated.

[0123] (viii) Colour protection testing was carried out using an X-rite colour i5 spectrophotometer operating with UV exclusion and a D65 light source with a 25 mm aperture. The garments to be tested were treated by washing in a washing machine (Miele W1) at 40°C with non-bio powder detergent (70 ml) and fabric conditioner (25 ml) and a cotton ballast (2 kg), followed by drying in a tumble dryer (Indesit ID75) at high temperature for 1 hour. The wash drying cycle was repeated a further 9 times. Colour measurements were taken from several areas of the garment and the average change in colour lightness (DL) compared to the colour of the unwashed garment was determined. The percentage improvement in colour protection over the control was calculated.

[0124] (ix) The print protection test was conducted using a panel of untrained personnel who were asked to rank a series of blind coded printed T-shirts in order of print quality. The garments to be tested were treated by washing in a washing machine (Miele W1) at 40°C with non-bio powder detergent (70 ml) and fabric conditioner (25 ml) and cotton ballast (2 kg), followed by drying in a tumble dryer (Indesit ID75) at high temperature for 1 hour. The wash drying cycle was repeated 3 more times. The panelists rated the prints on a scale of 1 to 3, with 1 representing the best quality print and 3 representing the worst quality print. Example 1

[0125] The amino compound used to prepare the composition of the present invention can be prepared by any of the following methods A to E.

[0126] Method A

[0127] Potato protein concentrate is added to hydrochloric acid solution and mixed until fully dispersed. The resulting dispersion is heated to reflux conditions. The dispersion is heated until the weight average molecular weight of the protein (measured by SE-HPLC as described in the test method) stops decreasing, typically in the range of 200-500 Da. After hydrolysis is complete, the pH of the solution is increased by adding sodium hydroxide. The protein hydrolysate is purified by filtering and treating with activated carbon. After purification, more sodium hydroxide is added to make the solution alkaline, and the solution is concentrated to the desired active substance content (within the range of 20 to 30% by weight active substance content) by evaporation or ultrafiltration, wherein ultrafiltration has the benefit of desalination. The resulting product will be referred to as amino compound A.

[0128] Method B

[0129] Potato protein concentrate is added to hydrochloric acid solution and mixed until fully dispersed. The resulting dispersion is heated to reflux conditions. The dispersion is heated until the weight average molecular weight of the protein stops decreasing, typically in the range of 200-500 Da. The acidic protein hydrolysate is then recovered by filtration. The pH of the solution is then increased by passing the solution through an anion exchange resin to remove chloride ions. The protein hydrolysate is purified by treating with activated carbon. After purification, more sodium hydroxide is added to make the solution alkaline, and the solution is concentrated to the desired active substance content (within the range of 20 to 30% by weight active substance content). The resulting product will be referred to as amide B.

[0130] Method C

[0131] Potato protein concentrate is added to the water and mixed until fully dispersed. The resulting dispersion is heated to the desired temperature, then sodium hydroxide solution is used to regulate pH. By stirring under the desired temperature and pH range, enzyme (carbohydrase and protease) catalysis of the hydrolysis of potato protein is used to achieve the usual weight average molecular weight of about 400 to 700 Da. After the hydrolysis, the pH of the hydrolysis mixture is reduced to acidity by adding hydrochloric acid solution, and the enzyme is denatured by heating. Purify the protein hydrolysate by filtering and treating with activated carbon. Then sodium hydroxide is used to adjust the hydrolyzed protein solution of the gained dilution to alkaline pH, and then concentrated into the desired active substance content (within the range of 20 to 30% by weight active substance content). Products therefrom will be referred to as amide C.

[0132] Method D

[0133] Potato protein concentrate is added to the water and mixed until fully dispersed. The gained dispersion is heated to the desired temperature, then sodium hydroxide solution is used to regulate pH. By stirring under the desired temperature and pH range, enzyme (carbohydrase and protease) catalysis of the hydrolysis of potato protein is used to realize the common weight average molecular weight of about 700 to 950 Da. After the hydrolysis, the pH of the hydrolysis mixture is reduced to acidity by adding hydrochloric acid solution, and the enzyme is denatured by heating. Purify the protein hydrolysate by filtering and treating with activated carbon. Then sodium hydroxide is used that the hydrolyzed protein solution of the gained dilution is adjusted to alkaline pH, and then concentrated into the desired active substance content (within 20 to 30% by weight active substance content range). Products therefrom will be referred to as amide D.

[0134] Method E

[0135] Chickpea protein concentrate is added to water and mixed until fully dispersed. The resulting dispersion is heated to the desired temperature, then sodium hydroxide solution is used to adjust pH. By stirring under the desired temperature and pH range, the hydrolysis of chickpea protein is catalyzed using enzymes (carbohydrase and protease) to achieve the usual weight average molecular weight of about 800 to 1000 Da. After hydrolysis, the pH of the hydrolysis mixture is reduced to acidity by adding hydrochloric acid solution, and the enzyme is denatured by heating. Purify the protein hydrolysate by filtering and treating with activated carbon. Then sodium hydroxide is used to adjust the resulting diluted hydrolyzed protein solution to alkaline pH, and then concentrated into the desired active substance content (within the range of 20 to 30% by weight active substance content). The resulting product will be referred to as amino compound E. Example 2

[0136] In a suitable container, the composition of the present invention is prepared by reacting amino compound D or amino compound E with itaconic anhydride according to the following method:

[0137] 1. Place the amino compound into a container.

[0138] 2. Adjust the pH to 9.5-11.0 (preferably 10.0-10.5) with sodium hydroxide. A high pH is preferred to promote the reaction of itaconic anhydride with the amino compound rather than with water to avoid or reduce the production of itaconic acid.

[0139] 3. Add a calculated amount of itaconic anhydride (calculated by formaldehyde titration, a technique described by Cobbett, WG, Gibbs, JA and Leach, AA (1964). J. Appl. Chem. (London), 14, 296-302). In this specific example, the amount of itaconic anhydride added is calculated by formaldehyde titration to react with 25 mole % of the free amino groups of the amino compound within a 15-120 minute period (preferably a 30-60 minute period). This calculation is based on the reaction proceeding to completion, but some itaconic anhydride may react with water to form itaconic acid and prevent complete reaction of the itaconic anhydride with the amino compound. An example of the calculated amount of itaconic anhydride required in grams is, for example, 200 (exemplary weight of the amino compound in grams) x 26.55 (exemplary result of formaldehyde titration) x 0.02 (molar concentration of NaOH used in formaldehyde titration) x 112 (molecular weight of itaconic anhydride) x 0.25 (mol % of free amino groups required for the reaction) / 1000 (unit conversion).

[0140] 4. During the addition of itaconic anhydride and initiation of the reaction, maintain a temperature of 15-45°C, preferably 20-35°C, and a pH of 9.5-11.0, preferably 10.0-10.5.

[0141] 5. The reaction conditions are maintained for another 1-4 hours (preferably 1-2 hours).

[0142] 6. Acidify with a mineral acid such as hydrochloric acid to pH 3.5-5.5 (preferably 4.0-5.0).

[0143] 7. Preserved by adding preservatives.

[0144] 8. Cool and adjust pH to pH 3.5-5.5 (preferably 4.0-5.0).

[0145] 9. Filter.

[0146] The obtained product will be referred to as itaconic acid-modified amino compound D or itaconic acid-modified amino compound E. Example 3

[0147] The fabric conditioner formulation shown in Table 2 was prepared from the amino compound of Example 1 and the itaconic acid-modified amino compound of Example 2 as follows.

[0148] The fabric conditioner used was Sensitive Fabric Conditioner (available from Asda UK) which contained the following ingredients:

[0149] • water

[0150] • Dihydrogenated tallow hydroxyethylammonium methyl sulfate

[0151] • Isopropyl alcohol

[0152] • Spices

[0153] • Polyquaternium-37

[0154] • 2-Bromo-2-nitropropane-1,3-diol

[0155] Table 2: Fabric Conditioner Formulations Example 4

[0156] Formulations 1 to 5 from Table 2 of Example 3 were tested for easy ironing performance using the easy ironing test method described above.

[0157] Table 3: Easy ironing test results

[0158] * Negative results indicate a decrease in performance

[0159] Table 3 shows that when itaconic acid modified amino compounds D or E are added to fabric conditioners, the easy ironing performance is improved compared to the fabric conditioner control without additives (Formulations 3 and 5). However, when amino compounds D or E are used in fabric conditioners without itaconic acid modification, a decrease in easy ironing performance is shown (Formulations 2 and 4). Example 5

[0160] Formulations 1 to 5 from Table 2 of Example 3 were tested for shape retention properties using the Shape Retention Test Method described above.

[0161] Table 4: Shape retention test results

[0162] * Negative results indicate a decrease in performance

[0163] Table 4 shows that when itaconic acid modified hydrolyzed potato protein (Formulation 3) or itaconic acid modified hydrolyzed chickpea protein (Formulation 5) is added to a fabric conditioner, shape retention performance is improved compared to a fabric conditioner control without additives (Formulation 1) or when hydrolyzed protein alone is used (Formulations 2 and 4). Example 6

[0164] Formulations 1, 3 and 5 from Table 2 of Example 3 were tested for color protection performance using the Color Protection Test Method described above. The results are provided in Table 5 where the garment tested was a blue cotton T-shirt, and in Table 6 where the garment tested was blue jeans.

[0165] Table 5: Color protection test results – cotton T-shirt

[0166] Table 6: Color Protection Test Results – Blue Jeans

[0167] Tables 5 and 6 show that color care performance is improved when itaconic acid modified hydrolyzed potato protein (Formulation 3) or itaconic acid modified hydrolyzed chickpea protein (Formulation 5) is added to a fabric conditioner compared to a fabric conditioner control without additives. Example 7

[0168] Formulations 1, 3 and 5 from Table 2 of Example 3 were tested for print protection performance using the print protection test method described above. Panelists rated the prints from 1 to 3, with 1 representing the best quality print and 3 representing the worst quality print. The results are provided in Table 7.

[0169] Table 7: Printing protection test results

[0170] Table 7 shows the ratings given by the panelists when comparing the print quality of the addition of itaconic acid modified hydrolyzed potato protein (Formulation 3) or itaconic acid modified hydrolyzed chickpea protein (Formulation 5) to the fabric conditioner control (Formulation 1) alone. Of the 14 panelists, 6 selected Formulation 3 as providing the best quality print, and 8 selected Formulation 5 as providing the best quality print. All panelists selected the print washed with the fabric conditioner alone (Control) as the worst quality print. Example 8

[0171] Formulations of 99 wt% fabric conditioner and 1 wt% hydrolyzed potato or chickpea protein with varying levels of itaconic acid modification were tested for shape retention versus a fabric conditioner control using the shape retention method described above. The results are provided in Table 8. The formulations in Table 8 were prepared according to the method of Example 2, with step 3 modified to use the required amount of itaconic anhydride to provide the desired mole % of itaconic acid modification.

[0172] Table 8: Different levels of itaconic acid modification * Shape retention results

[0173] * Itaconic acid modification levels were calculated using formaldehyde titration, assuming complete reaction

[0174] As can be seen in Table 8, for both hydrolyzed potato and chickpea proteins, itaconic acid modification at the 25 mol % level appears to produce better shape retention results.

[0175] It will be appreciated that the invention is not limited to the details of the above embodiments, which have been described by way of example only. Many variations are possible.

Claims

1. A composition comprising the reaction product of: a) itaconic anhydride; and b) an amino compound comprising at least one free amino group, wherein the amino compound is selected from hydrolyzed proteins; The composition comprises an itaconic acid-modified amino compound, wherein the itaconic acid-modified amino compound is a reaction product of a) and b).

2. A composition comprising the reaction product of: a) itaconic anhydride; and b) an amino compound comprising at least one free amino group, wherein the amino compound is selected from the group consisting of amino acids, peptides and hydrolyzed proteins; wherein the composition comprises an itaconic acid-modified amino compound, wherein the itaconic acid-modified amino compound is the reaction product of a) and b), and wherein the amount of itaconic anhydride used in the reaction is calculated to react with 1 mol % to 100 mol % of the free amino groups of the amino compound.

3. The composition according to claim 1 or 2, further comprising water.

4. A composition according to any one of the preceding claims, further comprising itaconic acid.

5. A composition according to any one of the preceding claims, further comprising a preservative, preferably selected from benzoates and sorbates.

6. A composition according to any one of the preceding claims, wherein the amino compound is a hydrolyzed protein, preferably a hydrolyzed vegetable protein, preferably a hydrolyzed potato or chickpea protein.

7. A composition according to any one of the preceding claims, wherein the amino compound is not a single amino acid.

8. A composition according to any one of the preceding claims, wherein the amino compound has a weight average molecular weight in the range of 200 Da to 5000 Da, preferably in the range of 200 Da to 3000 Da, more preferably in the range of 200 to 1500 Da, the weight average molecular weight preferably being measured by size exclusion chromatography.

9. A composition according to any preceding claim which does not comprise organosilane, organosilicon or siloxane compounds.

10. A composition according to any preceding claim which does not comprise a quaternary ammonium compound.

11. A home care formulation comprising a composition according to any one of the preceding claims.

12. A fabric conditioner or softener comprising the composition according to any one of claims 1 to 10.

13. A fabric conditioner or softener according to claim 12 further comprising a fabric softening compound.

14. A fabric conditioner or softener according to claim 12 or 13, further comprising a perfume.

15. A fabric conditioner or softener according to any one of claims 12 to 14 further comprising a compound selected from detergents, ironing aids and drying additives.

16. A fabric conditioner or softener according to any one of claims 12 to 15 further comprising a quaternary ammonium compound.

17. A fabric conditioner or softener according to any one of claims 12 to 15 which does not contain a quaternary ammonium compound.

18. A method of treating fibres, preferably textile fibres, comprising the step of applying to said fibres a composition according to any one of claims 1 to 10.

19. Use of a composition according to any one of claims 1 to 10 for treating fibers and / or fabrics to provide a benefit to the fibers and / or fabrics, preferably a benefit selected from the group consisting of fabric conditioning, easy ironing, color protection, print protection, fragrance enhancement, odor neutralization, fabric strength maintenance and shape retention.

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