Method of washing and drying fabric

Abstract

The present invention relates to a method of washing and drying a fabric wherein the method comprises the steps of: (a) washing the fabric in a washing solution comprising a detersive surfactant and an iron-based bleach catalyst; and (b) drying the washed fabric in the presence of ultraviolet radiation having an intensity of at least 8 W / m < 2 > UVA.

Description

Technical Field

[0001] The present invention relates to a method for washing and drying fabrics. Background Art

[0002] The feeling of the consumer to laundry detergent powder is that, compared with other laundry detergent product forms such as laundry detergent liquid and laundry detergent pouch, they deliver excellent cleaning performance. For this reason, the cleaning performance of laundry detergent powder needs to be very good. A very good way to ensure that the cleaning performance of laundry detergent powder is very good is to ensure that the stain removal performance of product is very good. The stubborn stain to be removed comprises curry stain. Not only good stain removal performance is important for overall cleaning performance, but this is also one of the main signals that product has good cleaning performance for consumers. The detergent powder that can remove curry stain prompts consumers to accept that the overall cleaning performance of laundry detergent powder is good.

[0003] Therefore, there is a need to provide a laundry detergent powder which provides good cleaning performance and provides a good signal to the consumer that the cleaning performance is good, such as by having very good stain removal performance on curry stains.

[0004] FeONIX and its closed amine variant FeONIX-A are new and emerging bleaching ingredients that are iron based bleach catalysts. They are particularly important to detergent manufacturers as they provide excellent curry stain removal performance, i.e. "HERO" stains, and provide a strong signal and consumer acceptance of laundry detergent powders with good overall cleaning performance.

[0005] The inventors have surprisingly found that these new iron-based bleach catalysts (FeONIX and FeONIX-A) provide enhanced curry stain removal performance when washed fabrics are dried under high UV radiation intensity. This method of combining the washing of fabrics with a laundry detergent powder containing a specific iron-based bleach catalyst and then drying the washed fabrics under high UV intensity conditions provides a very strong and powerful signal to the consumer that the laundry detergent powder has excellent overall cleaning performance. This method is surprising and does not anticipate the effect of the intensity of UV radiation on the curry stain removal performance of the iron-based bleach catalyst. Summary of the invention

[0006] The present invention provides a method for washing and drying fabrics, wherein the method comprises the following steps: (a) washing the fabrics in a washing solution, wherein the washing solution comprises a detersive surfactant and a

[0007] Iron-based bleach catalyst of the following structure:

[0008] and (b) at an intensity of at least 8 W / m2 UVA, or at least 10W / m 2 UVA, or at least 12

[0009] W / m 2 UVA, or 8W / m 2 Up to 35W / m 2 UVA, or 10W / m 2 Up to 30W / m 2

[0010] UVA, or 12W / m 2 Up to 30W / m 2 Drying of washed fabrics in the presence of UVA radiation. DETAILED DESCRIPTION

[0011] Method of washing and drying fabrics. The method for washing and drying fabrics comprises the following steps:

[0012] (a) washing fabrics in a washing solution comprising a detersive surfactant and having

[0013] Iron-based bleach catalyst of the following structure:

[0014] as well as

[0015] (b) at an intensity of at least 8 W / m 2 UVA, or at least 10W / m 2 UVA, or at least 12

[0016] W / m 2 UVA, or 8W / m 2 Up to 35W / m 2 UVA, or 10W / m 2 Up to 30W / m 2

[0017] UVA, or 12W / m 2 Up to 30W / m 2 Drying of washed fabrics in the presence of UVA radiation.

[0018] Step (a). Step (a) involves washing fabrics in a wash solution comprising a detersive surfactant and an iron-based bleach catalyst.

[0019] Preferably, the washing solution contains no UV absorber material. "Free" generally means that no UV absorber material is intentionally added to the washing solution. Typical UV absorber materials are selected from cinnamate, hydroxybenzophenone, α-cyanoacrylate, oxalanilide, phenyl salicylate and 2-hydroxyphenylbenzotriazole.

[0020] Preferably, the washing solution contains no antioxidant. "Free" generally means that no antioxidant is intentionally added to the washing solution. Typical antioxidants are selected from hindered phenol or hindered amine type antioxidants.

[0021] Preferably, the wash solution is formed by dosing a laundry detergent composition into water, wherein the composition comprises a detersive surfactant and an iron-based bleach catalyst. The laundry detergent composition is described in more detail below.

[0022] Step (b). Step (b) is carried out at an intensity of at least 8 W / m 2 UVA, or at least 10W / m 2 UVA, or at least 12W / m 2 UVA, or 8W / m 2 Up to 35W / m 2 UVA, or 10W / m 2 Up to 30W / m 2 UVA, or 12W / m 2 Up to 30W / m 2 Drying of washed fabrics in the presence of UVA radiation.

[0023] Laundry detergent compositions. The composition is typically a laundry detergent composition. Preferably, the composition comprises:

[0024] (a) detersive surfactants; and

[0025] (b) an iron-based bleach catalyst having the structure:

[0026]

[0027] The composition may have an equilibrium pH of 10.0 or less, preferably less than 10.0, or less than 9.5, or less than 9.0, or less than 8.5, preferably 6.0 to 10.0, or 6.0 to 9.5, or 6.0 to 9.0, or 6.0 to 8.5 at a concentration of 1 g / l in deionized water at 20°C.

[0028] The composition may have an equilibrium pH of 10.0, or greater than 10.0, preferably greater than 10.5, or even greater than 11.0, preferably from 10.0 to 12.0, or from 10.5 to 12.0, or from 10.5 to 11.5 at a concentration of 1 g / l in deionized water at 20°C.

[0029] Preferably, the composition is substantially free of sodium carbonate. "Substantially free" generally means that sodium carbonate is not intentionally included in the composition. However, trace levels (e.g., due to impurities and / or contamination) may be present in the composition, although this is preferably avoided. Typically, if present, the level of any sodium carbonate is less than 2.0% by weight of the composition, preferably less than 1.0% by weight, more preferably less than 0.5% by weight, or even less than 0.1% by weight.

[0030] Preferably, the composition comprises an anionic detersive surfactant. Suitable anionic detersive surfactants are described in more detail below. Preferably, the composition comprises an anionic detersive surfactant selected from alkyl sulfates and / or alkylbenzene sulfonates. Preferred alkyl sulfates are C8-C 24 Alkyl sulfates, particularly preferably mid-cut alkyl sulfates (MCAS), such as C 12 -C 14 Alkyl sulfate. Preferred alkylbenzene sulfonates are C 11 -C 13 Alkylbenzene sulfonate, particularly preferably linear C 11 -C 13 Alkylbenzene sulfonate.

[0031] Preferably, the composition comprises a dye transfer inhibiting agent. Suitable dye transfer inhibiting agents are described in more detail below.

[0032] Preferably, the composition comprises a nonionic detersive surfactant. Suitable nonionic detersive surfactants are described in more detail below.

[0033] Preferably, the composition comprises a hueing dye. Suitable hueing dyes are described in more detail below.

[0034] Preferably, the composition comprises a chelating agent. Suitable chelating agents are described in more detail below.

[0035] Preferably, the composition comprises an enzyme. Suitable enzymes are described in more detail below.

[0036] Preferably, the composition comprises a fragrance. Suitable fragrances are described in more detail below.

[0037] Preferably, the composition comprises a soil release polymer. Suitable soil release polymers are described in more detail below.

[0038] Preferably, the composition comprises:

[0039] (a) 8 wt % to 60 wt % of a detersive surfactant; and

[0040] (b) 0.001 wt% to 1.0 wt% of an iron-based bleach catalyst.

[0041] Preferred ranges for other suitable ingredients are provided below:

[0042] (c) 1.0 to 40 wt. % sodium carbonate.

[0043] (d) 0.1% to 5.0% by weight of a dye transfer inhibiting agent.

[0044] (e) 0.5 to 10 wt. % of a nonionic detersive surfactant.

[0045] (f) 0 wt% to 5.0 wt%, or more than 0 wt% to 2.0 wt% of a hueing dye.

[0046] (g) 0.2 to 5.0 wt % of a chelating agent.

[0047] (h) 0.1 wt % to 5.0 wt % enzyme.

[0048] (i) 0.1 wt% to 5.0 wt% of fragrance.

[0049] (j) 0.1 to 10 wt% of a soil release polymer.

[0050] (j) 1.0 to 40 wt % citric acid.

[0051] The laundry detergent composition may be in any suitable form. Preferred forms include powders, liquids, gels, tablets, bars and unit dose pouches (including multi-compartment unit dose pouches).

[0052] Preferably, the laundry detergent composition is a free-flowing solid granular laundry detergent composition. Typically, the free-flowing solid granular laundry detergent composition is a fully formulated laundry detergent composition rather than a portion thereof such as a spray-dried, extruded or agglomerated particle forming only part of the laundry detergent composition. Typically, the solid composition comprises a plurality of chemically distinct particles, such as spray-dried base detergent particles and / or agglomerated base detergent particles and / or extruded base detergent particles; one or more, typically two or more, or five or more, or even ten or more particles are combined, the particles being selected from: surfactant particles, including surfactant agglomerates, surfactant extrudates, surfactant needles, surfactant faces, surfactant flakes; phosphate particles; zeolite particles; silicate particles, especially sodium silicate particles; carbonate particles, especially sodium carbonate particles; polymer particles, such as carboxylate polymer particles, cellulose polymer particles, starch particles, polyester particles, polyamine particles, terephthalic acid polymer particles, polyethylene glycol particles; aesthetic particles, such as colored strips, needles, lamellar particles and ring particles; enzyme particles, such as protease particles, amylase particles, lipase particles, cellulase particles, mannanase particles, pectate lyase particles, xyloglucanase particles, bleaching enzyme particles and any of these enzymes; a co-granule, preferably the enzyme granules comprise sodium sulfate; bleaching agent granules, such as percarbonate granules, especially coated percarbonate granules, such as percarbonate coated with carbonate, sulfate, silicate, borosilicate, or any combination thereof, perborate granules, bleach activator granules such as tetraacetylethylenediamine granules and / or alkyloxybenzenesulfonate granules, bleach catalyst granules such as transition metal catalyst granules, and / or isoquinolinium bleach catalyst granules, preformed peracid granules, especially coated preformed peracid granules Acid particles; filler particles, such as sulfate particles and chloride particles; clay particles, such as montmorillonite particles and clay and silicone particles; flocculant particles, such as polyethylene oxide particles; wax particles, such as wax agglomerates; silicone particles, brightener particles; dye transfer inhibitor particles; dye fixing agent particles; perfume particles, such as perfume microcapsules and starch encapsulated perfume blend particles, and pro-perfume particles, such as Schiff base reaction product particles; hueing dye particles; chelant particles, such as chelant agglomerates; and any combination thereof.

[0053] Suitable compositions typically comprise detergent ingredients selected from the following: detersive surfactants, such as anionic detersive surfactants, nonionic detersive surfactants, cationic detersive surfactants, zwitterionic detersive surfactants and amphoteric detersive surfactants; polymers, such as carboxylate polymers, soil release polymers, anti-redeposition polymers, cellulosic polymers and care polymers; bleaches, such as hydrogen peroxide sources, bleach activators, bleach catalysts and preformed peracids; photobleaches, such as sulfonated zinc phthalocyanine and / or sulfonated aluminum phthalocyanine; enzymes, such as proteases, amylases, cellulases, lipases; zeolite builders; phosphate builders; auxiliary builders, such as citric acid and citrates; carbonates, such as sodium carbonate and sodium bicarbonate; sulfates, such as sodium sulfate; silicates, such as sodium silicate; chloride salts, such as sodium chloride; brighteners; chelating agents; colorants; dye transfer inhibitors; dye fixatives; perfumes; silicones; fabric softeners, such as clays; flocculants, such as polyethylene oxides; suds suppressors; and any combination thereof.

[0054] Suitable compositions may have a low buffering capacity. Such laundry detergent compositions typically have a reserve alkalinity to pH 9.5 of less than 5.0 g NaOH / 100 g. These low buffered laundry detergent compositions typically contain low levels of carbonates.

[0055] Iron based bleach catalyst. Iron-based bleach catalysts have the following structure:

[0056]

[0057] Suitable iron-based bleach catalysts include those from Weylchem FeONIX and / or from Weylchem FeONIX-A.

[0058] Detergent surfactants: Suitable detersive surfactants include anionic detersive surfactants, nonionic detersive surfactants, cationic detersive surfactants, zwitterionic detersive surfactants and amphoteric detersive surfactants. Suitable detersive surfactants may be linear or branched, substituted or unsubstituted, and may be derived from petrochemical materials or biomaterials.

[0059] Anionic detersive surfactants: Suitable anionic detersive surfactants include sulfonate detersive surfactants and sulfate detersive surfactants.

[0060] Suitable sulfonate detersive surfactants include methyl sulfonate, alpha olefin sulfonate, alkyl benzene sulfonate, especially alkyl benzene sulfonate, preferably C 10-13Alkylbenzene sulfonate. Suitable alkylbenzene sulfonates (LAS) are available, preferably by sulfonating commercially available linear alkylbenzene (LAB); suitable LABs include lower 2-phenyl LABs, other suitable LABs include higher 2-phenyl LABs, such as those sold under the trade name Those supplied by Sasol.

[0061] Suitable sulfate detersive surfactants include alkyl sulfates, preferably C 8-18 Alkyl sulfates, or mainly C 12 Alkyl sulfate.

[0062] Preferred sulfate detersive surfactants are alkyl alkoxylated sulfates, preferably alkyl ethoxylated sulfates, preferably C 8-18 Alkyl alkoxylated sulfate, preferably C 8-18 Alkyl ethoxylated sulfate, preferably alkyl alkoxylated sulfate having an average degree of alkoxylation of 0.5 to 20, preferably 0.5 to 10, preferably alkyl alkoxylated sulfate is C 8-18 Alkyl ethoxylated sulfates having an average degree of ethoxylation of from 0.5 to 10, preferably from 0.5 to 5, more preferably from 0.5 to 3, and most preferably from 0.5 to 1.5.

[0063] The alkyl sulfates, alkyl alkoxylated sulfates, and alkyl benzene sulfonates may be linear or branched, substituted or unsubstituted, and may be derived from petrochemical or biomaterials.

[0064] Other suitable anionic detersive surfactants include the alkyl ether carboxylates.

[0065] Suitable anionic detersive surfactants may be in the form of salts, and suitable counterions include sodium, calcium, magnesium, amino alcohols, and any combination thereof. The preferred counterion is sodium.

[0066] Nonionic detersive surfactant: Suitable nonionic detersive surfactants are selected from the group consisting of: C8-C 18 Alkyl ethoxylates, such as those available from Shell Nonionic surfactant; C6-C 12 Alkylphenol alkoxylates, wherein preferably the alkoxylate units are ethyleneoxy units, propyleneoxy units, or mixtures thereof; C 12 -C 18 Alcohol and C6-C 12 Condensates of alkylphenols with ethylene oxide / propylene oxide block polymers, such as those available from BASF Alkyl polysaccharides, preferably alkyl polyglycosides; methyl ester ethoxylates; polyhydroxy fatty acid amides; ether-terminated poly(alkoxylated) alcohol surfactants; and mixtures thereof.

[0067] Suitable nonionic detersive surfactants are alkyl polyglucosides and / or alkyl alkoxylated alcohols.

[0068] Suitable nonionic detersive surfactants include alkyl alkoxylated alcohols, preferably C 8-18 Alkyl alkoxylated alcohol, preferably C 8-18 The alkyl ethoxylated alcohol, preferably the alkyl alkoxylated alcohol, has an average degree of alkoxylation of 1 to 50, preferably 1 to 30, or 1 to 20, or 1 to 10, preferably the alkyl alkoxylated alcohol is C 8-18 Alkyl ethoxylated alcohols having an average degree of ethoxylation of 1 to 10, preferably 1 to 7, more preferably 1 to 5, and most preferably 3 to 7. The alkyl alkoxylated alcohols may be linear or branched, and substituted or unsubstituted.

[0069] Suitable nonionic detersive surfactants include those based on secondary alcohols.

[0070] Cationic detersive surfactants: Suitable cationic detersive surfactants include alkyl pyridinium compounds, alkyl quaternary ammonium compounds, alkyl quaternary phosphonium compounds, alkyl ternary sulfonium compounds, and mixtures thereof.

[0071] Preferred cationic detersive surfactants are quaternary ammonium compounds having the general formula:

[0072] (R)(R1)(R2)(R3)N + X -

[0073] Wherein R is a linear or branched, substituted or unsubstituted C 6-18 Alkyl or alkenyl moiety, R1 and R2 are independently selected from methyl or ethyl moieties, R3 is a hydroxyl, hydroxymethyl or hydroxyethyl moiety, and X is an anion providing electroneutrality, and preferred anions include: halide, preferably chloride; sulfate; and sulfonate.

[0074] Zwitterionic detersive surfactants: Suitable zwitterionic detersive surfactants include amine oxides and / or betaines.

[0075] polymer: Suitable polymers include carboxylate polymers, soil release polymers, anti-redeposition polymers, cellulosic polymers, conditioning polymers, and any combination thereof.

[0076] Carboxylate polymers:The composition may comprise a carboxylate polymer such as a maleate / acrylate random copolymer or a polyacrylate homopolymer. Suitable carboxylate polymers include: polyacrylate homopolymers having a molecular weight of 4,000 to 9,000 Da; maleate / acrylate random copolymers having a molecular weight of 50,000 to 100,000 Da, or 60,000 to 80,000 Da.

[0077] Another suitable carboxylate polymer is a copolymer comprising: (i) 50 wt% to less than 98 wt% of structural units derived from one or more monomers containing carboxyl groups; (ii) 1 wt% to less than 49 wt% of structural units derived from one or more monomers containing sulfonate moieties; and (iii) 1 wt% to 49 wt% of structural units derived from one or more types of monomers selected from monomers containing ether bonds represented by formula (I) and (II):

[0078] Formula (I):

[0079]

[0080] Wherein in formula (I), R0 represents a hydrogen atom or a CH3 group, R represents a CH2 group, a CH2CH2 group or a single bond, and X represents a number from 0 to 5, provided that when R is a single bond, X represents a number from 1 to 5, and R1 is a hydrogen atom or a C1 to C 20 Organic groups;

[0081] Formula (II)

[0082]

[0083] In formula (II), R0 represents a hydrogen atom or a CH3 group, R represents a CH2 group, a CH2CH2 group or a single bond, X represents a number from 0 to 5, and R1 is a hydrogen atom or a C1 to C 20 Organic group.

[0084] It may be preferred that the polymer has a weight average molecular weight of at least 50 kDa or even at least 70 kDa.

[0085] Detergent polymers: The composition may comprise a soil release polymer. Suitable soil release polymers have a structure as defined by one of the following structures (I), (II) or (III):

[0086] (I)-[(OCHR 1 -CHR 2 ) a -O-OC-Ar-CO-] d

[0087] (II)-[(OCHR 3 -CHR 4 ) b -O-OC-sAr-CO-] e

[0088] (III)-[(OCHR 5 -CHR 6 ) c -OR 7 ] f

[0089] in:

[0090] a, b and c are 1 to 200;

[0091] d, e and f are 1 to 50;

[0092] Ar is 1,4-substituted phenylene;

[0093] sAr is 1,3-substituted phenylene substituted at position 5 with SO3Me;

[0094] Me is Li, K, Mg / 2, Ca / 2, Al / 3, ammonium, monoalkylammonium, dialkylammonium, trialkylammonium or tetraalkylammonium, wherein the alkyl group is C1-C 18 Alkyl or C2-C 10 Hydroxyalkyl or mixtures thereof;

[0095] R 1 , R 2 , R 3 , R 4 , R 5 and R 6 Independently selected from H or C1-C 18 n-alkyl or C1-C 18 isoalkyl; and

[0096] R 7 A straight or branched C1-C 18 Alkyl, or straight or branched C2-C 30 alkenyl, or a cycloalkyl group having 5 to 9 carbon atoms, or a C8-C 30 Aryl, or C6-C 30 Arylalkyl.

[0097] Suitable soil release polymers are available from Clariant as A series of polymers are sold, e.g. SRN240 and SRA300. Other suitable soil release polymers are available from Solvay as A series of polymers are sold, e.g. SF2 and Repel-o- Crystal.

[0098] Anti-redeposition polymers: Suitable anti-redeposition polymers include polyethylene glycol polymers and / or polyethylene imine polymers.

[0099] Suitable polyethylene glycol polymers include random graft copolymers comprising: (i) a hydrophilic backbone comprising polyethylene glycol; and (ii) one or more hydrophobic side chains selected from the group consisting of: C4-C 25 Alkyl groups, polypropylene, polybutylene, vinyl esters of saturated C1-C6 monocarboxylic acids, C1-C6 alkyl esters of acrylic or methacrylic acid, and mixtures thereof. Suitable polyethylene glycol polymers have a polyethylene glycol backbone having randomly grafted polyvinyl acetate side chains. The average molecular weight of the polyethylene glycol backbone may be in the range of 2,000Da to 20,000Da, or 4,000Da to 8,000Da. The molecular weight ratio of the polyethylene glycol backbone to the polyvinyl acetate side chains may be in the range of 1:1 to 1:5, or 1:1.2 to 1:2. The average number of grafting sites per ethylene oxide unit may be less than 0.02, or less than 0.016, the average number of grafting sites per ethylene oxide unit may be in the range of 0.010 to 0.018, or the average number of grafting sites per ethylene oxide unit may be less than 0.010, or in the range of 0.004 to 0.008.

[0100] Suitable polyethylene glycol polymers are described in WO08 / 007320.

[0101] A suitable polyethylene glycol polymer is Sokalan HP22.

[0102] Cellulose polymers: Suitable cellulosic polymers are selected from alkyl celluloses, alkyl alkoxyalkyl celluloses, carboxyalkyl celluloses, alkyl carboxyalkyl celluloses, sulfonate alkyl celluloses, more preferably selected from carboxymethyl cellulose, methyl cellulose, methyl hydroxyethyl cellulose, methyl carboxymethyl cellulose and mixtures thereof.

[0103] Suitable carboxymethyl celluloses have a degree of carboxymethyl substitution of 0.5 to 0.9 and a molecular weight of 100,000 Da to 300,000 Da.

[0104] Suitable carboxymethyl celluloses have a degree of substitution greater than 0.65 and a degree of blockiness greater than 0.45, for example as described in WO 09 / 154933.

[0105] Care polymers:Suitable care polymers include cationically modified or hydrophobically modified cellulosic polymers. Such modified cellulosic polymers can provide anti-abrasion benefits and dye lock benefits to fabrics during the wash cycle. Suitable cellulosic polymers include cationically modified hydroxyethyl cellulose.

[0106] Other suitable care polymers include dye lock polymers, such as condensation oligomers produced by condensation of imidazole and epichlorohydrin, preferably in a 1:4:1 ratio. Suitable commercially available dye lock polymers are FDI (Cognis).

[0107] Other suitable care polymers include amino-silicones, which can provide fabric feel benefits and fabric form retention benefits.

[0108] Bleach: Typical bleaching agents include a hydrogen peroxide source, a bleach activator, a bleach catalyst, a preformed peracid, and any combination thereof. Particularly typical bleaching agents include a combination of a hydrogen peroxide source and a bleach activator.

[0109] Hydrogen Peroxide Source: Typical sources of hydrogen peroxide include sodium perborate and / or sodium percarbonate.

[0110] Bleach Activator: Typical bleach activators include tetraacetylethylenediamine (TAED) and / or alkyloxybenzene sulfonates.

[0111] Preformed peracids: Typical preformed peracids include phthalimidoperoxycaproic acid.

[0112] Enzymes: Suitable enzymes include lipases, proteases, cellulases, amylases, and any combination thereof.

[0113] Protease: Suitable proteases include metalloproteases and serine proteases. Examples of suitable neutral or alkaline proteases include: subtilisin (EC 3.4.21.62); trypsin-type or chymotrypsin-type proteases; and metalloproteases. Suitable proteases include chemically modified or genetically modified mutants of the aforementioned suitable proteases.

[0114] Suitable commercially available proteases include those sold under the trade names Liquanase Savinase and Those sold by Novozymes A / S (Denmark); under the trade name Prefer A series of proteases, including P280, P281, P2018-C, P2081-WE, P2082-EE and P2083-A / J, Purafect Purafect and Purafect Those sold by DuPont; under the trade name and Those sold by Solvay Enzymes; those purchased from Henkel / Kemira, namely BLAP (sequence shown in Figure 29 of US 5,352,604, with the following mutations: S99D+S101 R+S103A+V104I+G159S, hereinafter referred to as BLAP); BLAP R (BLAP with S3T+V4I+V199M+V205I+L217D), BLAP X (BLAP with S3T+V4I+V205I) and BLAP F49 (BLAP with S3T+V4I+A194P+V199M+V205I+L217D), all from Henkel / Kemira; and KAP (alkalophilic Bacillus subtilisin with mutations A230V+S256G+S259N) from Kao.

[0115] Suitable proteases are described in WO11 / 140316 and WO11 / 072117.

[0116] Amylase: Suitable amylases are derived from AA560 alpha amylase endogenous to Bacillus sp. DSM 12649, preferably with the following mutations: R118K, D183*, G184*, N195F, R320K and / or R458K. Suitable commercially available amylases include Plus, Natalase, Ultra, SZ, (both from Novozymes) and AA, Preferenz Series of amylase, and Ox Am, HT Plus (both from Du Pont).

[0117] Suitable amylases are described in WO06 / 002643.

[0118] Cellulase: Suitable cellulases include those of bacterial or fungal origin. Chemically modified or protein engineered mutants are also suitable. Suitable cellulases include cellulases from Bacillus, Pseudomonas, Humicola, Fusarium, Thielavia, Acremonium, such as fungal cellulases produced by Humicola insolens, Myceliophthora thermophila and Fusarium oxysporum.

[0119] Commercially available cellulases include and Premium, and (Novozymes A / S), Series enzymes (Du Pont), and Series enzymes (AB Enzymes). Suitable commercially available cellulases include Premium, Classic. Suitable proteases are described in WO07 / 144857 and WO10 / 056652.

[0120] Lipase: Suitable lipases include those of bacteria, fungi or synthetic origin and their variants. Chemically modified or protein engineered mutants are also suitable. The example of suitable lipases includes the lipase from Humicola (synonym Thermomyces), for example from H. lanuginosa (T. lanuginosus).

[0121] The lipase may be a "first cycle lipase", e.g., such as those described in WO06 / 090335 and WO13 / 116261. In one aspect, the lipase is a first wash lipase, preferably a variant of the wild-type lipase from Thermomyces lanuginosus comprising a T231R and / or N233R mutation. Preferred lipases include those sold under the trade name and Those sold by Novozymes (Bagsvaerd, Denmark).

[0122] Other suitable lipases include: Liprl 139, e.g., as described in WO2013 / 171241; and TfuLip2, e.g., as described in WO2011 / 084412 and WO2013 / 033318.

[0123] Other enzymes: Other suitable enzymes are bleaching enzymes such as peroxidases / oxidases, including those of plant, bacterial or fungal origin, and variants thereof. Commercially available peroxidases include (Novozymes A / S). Other suitable enzymes include choline oxidase and perhydrolase, such as those used in Gentle Power Bleach TM Those in .

[0124] Other suitable enzymes include those sold under the trade name X- (from Novozymes A / S, Bagsvaerd, Denmark) and Pectate lyase sold under the trade name (Novozymes A / S, Bagsvaerd, Denmark) and Mannanase sold by Du Pont.

[0125] Zeolite Builder: The composition may comprise a zeolite builder. The composition may comprise from 0% to 5% by weight of a zeolite builder, or 3% by weight of a zeolite builder. The composition may even be substantially free of zeolite builder; substantially free means "no intentional addition". Typical zeolite builders include zeolite A, zeolite P and zeolite MAP.

[0126] Phosphate builders: The composition may comprise a phosphate builder. The composition may comprise from 0% to 5% by weight of a phosphate builder, or to 3% by weight of a phosphate builder. The composition may even be substantially free of phosphate builder; substantially free means "no intentionally added". A typical phosphate builder is sodium tripolyphosphate.

[0127] Carbonates: The composition may comprise carbonates. The composition may comprise 0% to 10% by weight of carbonates, or 0% to 5% by weight of carbonates. The composition may even be substantially free of carbonates; substantially free means "no intentional addition". Suitable carbonates include sodium carbonate and sodium bicarbonate.

[0128] Silicate:The composition may comprise a silicate. The composition may comprise 0 to 10 wt% silicate, or 0 to 5 wt% silicate. A preferred silicate is sodium silicate, particularly preferred is sodium silicate having a Na2O:SiO2 ratio of 1.0 to 2.8, preferably 1.6 to 2.0.

[0129] Sulfate: A suitable sulfate salt is sodium sulfate.

[0130] Brightener: Suitable fluorescent brighteners include: distyrylbiphenyl compounds, such as CBS-X, diaminostilbene disulfonic acid compounds, e.g. DMS pure Xtra and HRH, and pyrazoline compounds, e.g. SN and coumarin compounds, e.g. SWN.

[0131] Preferred brighteners are: sodium 2(4-phenylvinyl-3-sulfophenyl)-2H-naphtho[1,2-d]triazole, disodium 4,4'-bis{[(4-phenylamino-6-(N-methyl-N-2-hydroxyethyl)amino1,3,5-triazine-2-yl)]; amino}stilbene-2-2'disulfonic acid, disodium 4,4'-bis{[(4-phenylamino-6-morpholino-1,3,5-triazine-2-yl)]amino}stilbene-2-2'disulfonic acid and disodium 4,4'-bis(2-sulfonylstyryl)biphenyl. A suitable fluorescent brightener is CI fluorescent brightener 260, which can be used in its β or α crystalline form or a mixture of these crystalline forms.

[0132] Chelating agents: The composition may also include a chelating agent. Suitable chelating agents may include phosphonates, aminocarboxylates, aminophosphonates, polyfunctionally substituted aromatic chelating agents, or mixtures thereof, preferably aminocarboxylates. Chelating agents used herein are not intended to include traditional builders, such as citric acid, although such builders may be present in the compositions of the present disclosure.

[0133] Aminocarboxylates useful as chelating agents include, but are not limited to, ethylenediaminetetraacetate, N-(hydroxyethyl)ethylenediaminetriacetate, nitrilotriacetate, ethylenediaminetetrapropionate, triethylenetetraaminehexaacetate, diethylenetriaminepentaacetate, and ethanolimidodiacetic acid, alkali metal salts, ammonium salts, and substituted ammonium salts thereof, and mixtures thereof. Aminophosphonates are also suitable for use as chelating agents in the compositions of the present invention when low levels of total phosphorus are permitted; and include ethylenediaminetetra(methylenephosphonates). Polyfunctionally substituted aromatic chelating agents may include catechols, such as sulfonated catechols.

[0134] Suitable chelating agents may include: DTPA (diethylenetriaminepentaacetic acid), HEDP (hydroxyethanediphosphonic acid), EDDS (ethylenediamine disuccinate (EDDS)), DTPMP (diethylenetriaminepenta(methylenephosphonic acid)), EDTMP (ethylenediaminetetra(methylenephosphonic acid)), (1,2-dihydroxybenzene-3,5-disulfonic acid), HPNO (2-pyridinol-N-oxide), MGDA (methylglycine diacetic acid), GLDA (glutamic acid-N,N-diacetic acid), any suitable derivatives thereof, salts thereof, and mixtures thereof.

[0135] Toner: Suitable tinting agents include small molecule dyes, typically belonging to the following Color Index (CI) classifications: acid dyes, direct dyes, basic dyes, reactive dyes (including their hydrolyzed forms) or solvent dyes or disperse dyes, such as dyes classified as blue, violet, red, green or black, and providing the desired hue alone or in combination. Preferred such tinting agents include acid violet 50, direct violet 9, 66 and 99, solvent violet 13, and any combination thereof.

[0136] Many hueing agents that may be suitable for use in the present invention are known and described in the art, such as the hueing agents described in WO2014 / 089386.

[0137] Suitable hueing agents include phthalocyanine and azo dye conjugates such as described in WO2009 / 069077.

[0138] Suitable toners can be alkoxylated. Such alkoxylated compounds can be prepared by organic synthesis, which can produce a mixture of molecules with different degrees of alkoxylation. Such mixtures can be used directly to provide toners, or can undergo purification steps to increase the ratio of the target molecule. Suitable toners include alkoxylated disazo dyes, such as those described in WO2012 / 054835, and / or alkoxylated thiophene azo dyes, such as those described in WO2008 / 087497 and WO2012 / 166768.

[0139] Toner can be incorporated in the detergent composition as a part for reaction mixture, and this reaction mixture is the result of organic synthesis dye molecules by one or more optional purification steps.This type of reaction mixture generally comprises dye molecules itself, and can also comprise the by product of unreacted parent material and / or organic synthesis pathway in addition.Suitable toner can be incorporated in the hueing dye particles, such as being described in WO 2009 / 069077.

[0140] Dye transfer inhibitors:Suitable dye transfer inhibitors include polyamine N-oxide polymers, copolymers of N-vinyl pyrrolidone and N-vinylimidazole, polyvinyl pyrrolidone, polyvinyl oxazolidones, polyvinyl imidazoles, and mixtures thereof. Preferred are poly(vinyl pyrrolidone), poly(vinyl pyridine betaine), poly(vinyl pyridine N-oxide), poly(vinyl pyrrolidone-vinylimidazole) and mixtures thereof. Suitable commercially available dye transfer inhibitors include PVP-K15 and K30 (Ashland), HP165, HP50, HP53, HP59, HP56K, HP56, HP66 (BASF), S-400, S403E and S-100 (Ashland).

[0141] spices: Suitable fragrances include fragrance materials selected from the following groups: (a) fragrance materials having a ClogP of less than 3.0 and a boiling point of less than 250°C (Quadrant 1 fragrance materials); (b) fragrance materials having a ClogP of less than 3.0 and a boiling point of 250°C or greater (Quadrant 2 fragrance materials); (c) fragrance materials having a ClogP of 3.0 or greater and a boiling point of less than 250°C (Quadrant 3 fragrance materials); (d) fragrance materials having a ClogP of 3.0 or greater and a boiling point of 250°C or greater (Quadrant 4 fragrance materials); and (e) mixtures thereof.

[0142] For spices, it is preferably in the form of spices delivery technology. Such delivery technology also stabilizes and enhances the release of deposition and spices materials from washed fabrics. Such spices delivery technology can also be used to further increase the persistence of releasing spices from washed fabrics. Suitable spices delivery technology includes: spices microcapsules, former spices, polymer-assisted delivery, molecule-assisted delivery, fiber-assisted delivery, amine-assisted delivery, cyclodextrin, starch encapsulation concoction, zeolite and other inorganic carriers, and any mixture thereof. Suitable spices microcapsules are described in WO2009 / 101593.

[0143] Siloxane: Suitable silicones include polydimethylsiloxanes and amino-silicones. Suitable silicones are described in WO05075616.

[0144] Method for preparing the composition: Generally, the particles of the composition can be prepared by any suitable method, such as spray drying, agglomeration, extrusion, and any combination thereof.

[0145] Typically, suitable spray drying methods include the steps of forming an aqueous slurry mixture, transferring the aqueous slurry mixture to a pressure nozzle by at least one pump, preferably two pumps. Atomizing the aqueous slurry mixture into a spray drying tower and drying the aqueous slurry mixture to form spray-dried particles. Preferably, the spray drying tower is a countercurrent spray drying tower, although a cocurrent spray drying tower may also be suitable.

[0146] Typically, the spray-dried powder is subjected to cooling, such as air stripping. Typically, the spray-dried powder is subjected to particle size classification, such as sieving, to obtain a desired particle size distribution. Preferably, the spray-dried powder has a particle size distribution such that the weight average particle size is in the range of 300 microns to 500 microns, and less than 10% by weight of the spray-dried particles have a particle size greater than 2360 microns.

[0147] It may be preferred to heat the aqueous slurry mixture to raise the temperature prior to atomization into a spray drying tower, such as described in WO2009 / 158162.

[0148] For anionic surfactants, such as linear alkylbenzene sulfonates it may be preferred that they are introduced into the spray drying process after the step of forming the aqueous slurry mixture: for example, the acid precursor is introduced into the aqueous slurry mixture after pumping, such as described in WO 09 / 158449.

[0149] It may be preferred for a gas such as air to be introduced into the spray drying process after the step of forming the aqueous slurry, such as described in WO2013 / 181205.

[0150] It may be preferred for any inorganic ingredients, such as sodium sulphate and sodium carbonate, if present in the aqueous slurry mixture, that the sodium sulphate and sodium carbonate are micronised to a small particle size, such as described in WO2012 / 134969.

[0151] Typically, suitable agglomeration processes include the step of contacting a detersive ingredient, such as a detersive surfactant, e.g. linear alkylbenzene sulfonate (LAS) and / or an alkyl alkoxylated sulfate, with an inorganic material, such as sodium carbonate and / or silica in a mixer. The agglomeration process may also be an in-situ neutralization agglomeration process, wherein an acid precursor of a detersive surfactant, such as LAS, is contacted with an alkaline material, such as carbonate and / or sodium hydroxide in a mixer, and wherein the acid precursor of the detersive surfactant is neutralized by the alkaline material during the agglomeration process to form a detersive surfactant.

[0152] Other suitable detergent ingredients that may be agglomerated include polymers, chelating agents, bleach activators, silicones, and any combination thereof.

[0153] Agglomeration process can be high, medium or low shear agglomeration process, wherein high shear, medium shear or low shear mixer is used accordingly. Agglomeration process can be multi-step agglomeration process, wherein two or more mixers are used, such as high shear mixer combined with medium or low shear mixer. Agglomeration process can be continuous process or batch process.

[0154] It may be preferred for the agglomerates to be subjected to a drying step, for example to a fluidized bed drying step. It may also be preferred for the agglomerates to be subjected to a cooling step, for example to a fluidized bed cooling step.

[0155] Typically, the agglomerates are subjected to particle size classification, such as fluidized bed elution and / or sieving, to obtain a desired particle size distribution. Preferably, the agglomerates have a particle size distribution such that the weight average particle size is in the range of 300 microns to 800 microns, and less than 10% by weight of the agglomerates have a particle size of less than 150 microns, and less than 10% by weight of the agglomerates have a particle size greater than 1200 microns.

[0156] It may be preferred for fine and oversized agglomerates to be recycled back into the agglomeration process. Typically, oversized particles are subjected to a comminution step, such as grinding, and recycled back to a suitable location in the agglomeration process, such as a mixer. Typically, fines are recycled back to a suitable location in the agglomeration process, such as a mixer.

[0157] For ingredients, such as polymers and / or nonionic detersive surfactants and / or perfumes, it may be preferred to spray onto base detergent particles, such as spray-dried base detergent particles and / or agglomerated base detergent particles. Typically, the spraying step is carried out in a tumble drum mixer.

[0158] Method for washing fabrics: The method for washing fabrics comprises contacting the composition with water to form a wash liquor, and the step of washing fabrics in the wash liquor. Typically, the wash liquor has a temperature higher than 0°C to 90°C, or to 60°C, or to 40°C, or to 30°C, or to 20°C. Before, after, or while the solid composition is contacted with water, the fabric may be contacted with water. Typically, the wash liquor is formed by contacting the laundry detergent with water in such an amount that the concentration of the laundry detergent composition in the wash liquor is 0.2g / l to 20g / l, or 0.5g / l to 10g / l, or to 5.0g / l. The method for washing fabrics can be carried out in a front loading automatic washing machine, a top loading automatic washing machine, including a high efficiency automatic washing machine, or a suitable hand washing container. Typically, the wash liquor comprises 90 liters or less, or 60 liters or less, or 15 liters or less, or 10 liters or less of water. Typically, 200 g or less, alternatively 150 g or less, alternatively 100 g or less, alternatively 50 g or less of the laundry detergent composition is contacted with water to form the wash liquor.

[0159] After washing and any rinsing steps, the fabric is then dried according to the method of the invention.The required UV radiation intensity may be provided by ambient conditions during a sunny day, alternatively, other means of providing UV radiation, such as a UV lamp, may be required to provide the required UV radiation intensity.

[0160] Methods for measuring pH

[0161] Typically, the pH of the composition is measured using an electrode. The composition is diluted to a concentration of 10 g / l in deionized water at 20°C and stirred to dissolve the composition. The pH of the sample is then measured using a pH meter such as an electrode.

[0162] Methods for measuring UV radiation intensity

[0163] UV intensity was measured using a Spectrosense 2 instrument (SKL904) from Skye Instruments with UV (SKU426) and light sensors.

[0164] Embodiments of the present invention

[0165] 1. A method for washing and drying fabrics, wherein the method comprises the following steps:

[0166] (a) washing fabrics in a wash solution comprising a detersive surfactant and an iron-based bleach catalyst having the following structure:

[0167] as well as

[0168] (b) at an intensity of at least 8 W / m 2 Drying of washed fabrics in the presence of UVA radiation.

[0169] 2. The method according to embodiment 1, wherein the drying step (b) is carried out at an intensity of 12 W / m 2 Up to 30W / m 2 It is carried out in the presence of UVA ultraviolet radiation.

[0170] 3. The method according to any preceding embodiment, wherein the wash solution is free of UV absorber material.

[0171] 4. The method according to any preceding embodiment, wherein the washing solution does not contain an antioxidant.

[0172] 5. The method according to any preceding embodiment, wherein the wash solution is formed by dosing a laundry detergent composition into water, wherein the composition comprises a detersive surfactant and the iron-based bleach catalyst.

[0173] 6. The method of embodiment 5, wherein the laundry detergent composition is free of UV absorber materials.

[0174] 7. The method of any one of embodiments 5 to 6, wherein the laundry detergent composition is free of antioxidants.

[0175] 8. The method of any one of embodiments 5 to 7, wherein the laundry detergent composition comprises a photo-bleach.

[0176] 9. The method of any one of embodiments 5 to 8, wherein the laundry detergent composition comprises a lipase.

[0177] 10. The method of any one of embodiments 5 to 9, wherein the laundry detergent composition comprises a photoactivated perfume.

[0178] 11. The method of any one of embodiments 5 to 10, wherein the laundry detergent composition comprises a leuco dye.

[0179] 12. The method according to any preceding embodiment, wherein the washed fabric is rinsed after the washing step (a) and before the drying step (b).

[0180] 13. The method according to any preceding embodiment, wherein the drying step (b) is performed outdoors.

[0181] Example

[0182] The following compositions were prepared and tested for stain removal performance.

[0183]

[0184]

[0185] Washing method: The following method demonstrates the ability of the example compositions to remove stains during the washing process. Each composition is added separately to the tank of an oscillating dirt-washing instrument. The volume of each tank is 1L. The washing temperature is set to 27°C. Throughout the process, 7gpg of water is used. The product is stirred for 1 minute (300rpm), and then the fabric is added (two internal repetitions for each stain, and an additional knitted cotton ballast to bring the total fabric weight to 60g). Once the fabric is added, the wash solution is stirred for 17 minutes (208rpm). The wash solution is then drained, and the fabric is subjected to a 5-minute rinse step, then drained and spin-dried. The process is repeated three more times, resulting in a total of four external repetitions. After washing, the fabric is dried under simulated solar conditions (UVA intensity (300-400nm) at 16.35 and 33.31w / m 2or dry in the absence of light.

[0186] Stain removal effect analysis: The L*a*b* values ​​of the fabrics were analyzed using commercially available image analysis software. The SRI value was then calculated from the L*a*b* values ​​using the formula shown. The higher the SRI, the better the stain removal effect.

[0187] %SRI (stain removal effect) = 100*((ΔE b –ΔE a ) / ΔE b )

[0188] ΔE b =√((L c -L b ) 2 +(a c -a b ) 2 +b c -b b ) 2 )

[0189] ΔE a =√((L c -L a ) 2 +(a c -a a ) 2 +b c -b a ) 2 )

[0190] Subscript "b" indicates the data of the stain before washing

[0191] Subscript "a" indicates the stain data after washing

[0192] Subscript "c" indicates data for undyed fabrics

[0193] Therefore, L*a*b* values ​​were obtained from undyed fabric, dyed fabric before washing and dyed fabric after washing.

[0194]

[0195]

[0196] The stain removal performance data demonstrated that the catalyst has higher efficacy and contributes more to stain removal under simulated solar conditions.

[0197] The dimensions and values ​​disclosed herein are not to be understood as being strictly limited to the exact numerical values ​​cited. Instead, unless otherwise indicated, each such dimension is intended to represent the stated value and a functionally equivalent range around that value. For example, a dimension disclosed as "40 mm" is intended to mean "about 40 mm".

Claims

1. A method for washing and drying fabrics, wherein the method comprises the following steps: (a) washing fabrics in a wash solution comprising a detersive surfactant and an iron-based bleach catalyst having the following structure: as well as (b) at an intensity of at least 8 W / m 2 Drying of laundered fabrics in the presence of UVA radiation.

2. The method according to claim 1, wherein the drying step (b) is carried out at an intensity of 12 W / m 2 Up to 30W / m 2 Performed in the presence of UVA ultraviolet radiation.

3. A method according to any preceding claim, wherein the wash solution is free of UV absorber material.

4. A method according to any preceding claim, wherein the wash solution is free of antioxidants.

5. A method according to any preceding claim wherein the wash solution is formed by dosing a laundry detergent composition into water, wherein the composition comprises a detersive surfactant and the iron-based bleach catalyst.

6. The method of claim 5, wherein the laundry detergent composition is free of UV absorber materials.

7. The method according to any one of claims 5 to 6, wherein the laundry detergent composition is free of antioxidants.

8. A method according to any one of claims 5 to 7, wherein the laundry detergent composition comprises a photo-bleach.

9. The method according to any one of claims 5 to 8, wherein the laundry detergent composition comprises a lipase.

10. The method of any one of claims 5 to 9, wherein the laundry detergent composition comprises a photoactivated perfume.

11. A method according to any one of claims 5 to 10, wherein the laundry detergent composition comprises a leuco dye.

12. A method according to any preceding claim, wherein the washed fabric is rinsed after the washing step (a) and before the drying step (b).

13. A method according to any preceding claim, wherein drying step (b) is carried out outdoors.

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