Low built detergent composition comprising bluing agent

Abstract

A solid laundry detergent composition having: (a) detersive surfactant; (b) bluing agent; and (c) from 0 wt % to 10 wt % zeolite builder; (d) from 0 wt % to 10 wt % phosphate builder; and (e) optionally, one or more additional laundry detergent ingredients.

Claims

1. A solid laundry detergent composition comprising: (a) detersive surfactant; (b) bluing agent, wherein the bluing agent has the following structure: ##STR00015## wherein: R.sub.1 and R.sub.2 are independently selected from the group consisting of: H; alkyl; alkoxy; alkyleneoxy; alkyl capped alkyleneoxy; urea; and amido; R.sub.3 is a substituted aryl group; X is a substituted group comprising sulfonamide moiety and optionally an alkyl and/or aryl moiety, and wherein the substituent group comprises at least one alkyleneoxy chain that comprises at least four alkyleneoxy moieties; and (c) optionally, one or more additional laundry detergent ingredients; wherein the composition is substantially free of zeolite builder and phosphate builder.

2. A composition according to claim 1, wherein the bluing agent has the following structure: ##STR00016## wherein: R.sub.1 and R.sub.2 are independently selected from the group consisting of: H; alkyl; alkoxy; alkyleneoxy; alkyl capped alkyleneoxy; urea; and amido; U is a hydrogen, a substituted or unsubstituted amino group; W is a substituted group comprising an amino moiety and optionally an alkyl and/or aryl moiety, and wherein the substituent group comprises at least one alkyleneoxy chain that comprises at least four alkyleneoxy moieties; Y is a hydrogen or a sulfonic acid moiety; and Z is a sulfonic acid moiety or an amino group substituted with an aryl group.

3. A composition according to claim 2, wherein R.sub.1 is an alkoxy group and R.sub.2 is an alkyl group.

4. A composition according to claim 1, wherein the detersive surfactant comprises: (i) alkoxylated alkyl sulphate anionic detersive surfactant having an average degree of alkoxylation of from 0.5 to 5; and/or (ii) predominantly C.sub.12 alkyl sulphate anionic detersive surfactant.

5. A composition according to claim 1, wherein the composition comprises a clay and soil removal/anti-redeposition agent selected from the group consisting of: (a) random graft co-polymers comprising: (i) hydrophilic backbone comprising polyethylene glycol; and (ii) hydrophobic side chain(s) selected from the group consisting of: C.sub.4-C.sub.25 alkyl group, polypropylene, polybutylene, vinyl ester of a saturated C.sub.1-C.sub.6 mono-carboxylic acid, C.sub.1-C .sub.6 alkyl ester of acrylic or methacrylic acid, and mixtures thereof; (b) cellulosic polymers having a degree of substitution (DS) of from 0.01 to 0.99 and a degree of blockiness (DB) such that either DS+DB is of at least 1.00 or DB+2DS-DS.sup.2 is at least 1.20; (c) co-polymers comprising: (i) from 50 to less than 98 wt % structural units derived from one or more monomers comprising carboxyl groups; (ii) from 1 to less than 49 wt % structural units derived from one or more monomers comprising sulfonate moieties; and (iii) from 1 to 49 wt % structural units derived from one or more types of monomers selected from ether bond-containing monomers represented by formulas (I) and (II): ##STR00017## wherein in formula (I), R.sub.0 represents a hydrogen atom or CH.sub.3 group, R represents a CH.sub.2 group, CH.sub.2CH.sub.2 group or single bond, X represents a number 0-5 provided X represents a number 1-5 when R is a single bond, and R.sub.1 is a hydrogen atom or C.sub.1 to C.sub.20 organic group; ##STR00018## in formula (II), R.sub.0 represents a hydrogen atom or CH.sub.3 group, R represents a CH.sub.2 group, CH.sub.2CH.sub.2 group or single bond, X represents a number 0-5, and R.sub.1 is a hydrogen atom or C.sub.1 to C.sub.20 organic group; (d) polyester soil release polymers having a structure according to one of the following structures (I), (II) or (III):
[(OCHR.sup.1CHR.sup.2).sub.aOOC-Ar-CO].sub.d(I)
[(OCHR.sup.3CHR.sup.4).sub.bOOC-sAr-CO].sub.e(II)
[(OCHR.sup.5CHR.sup.6).sub.cOR.sup.7].sub.f(III) wherein: a, b and c are from 1 to 200; d, e and f are from 1 to 50; Ar is a 1,4-substituted phenylene; sAr is 1,3-substituted phenylene substituted in position 5 with SO.sub.3Me; Me is H, Na, Li, K, Mg/2, Ca/2, Al/3, ammonium, mono-, di-, tri-, or tetraalkylammonium wherein the alkyl groups are C.sub.1-C.sub.18 alkyl or C.sub.2-C.sub.10 hydroxyalkyl, or any mixture thereof; R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 are independently selected from H or C.sub.1-C.sub.18 n- or iso-alkyl; and R.sup.7 is a linear or branched C.sub.1-C.sub.18 alkyl, or a linear or branched C.sub.2-C.sub.30 alkenyl, or a cycloalkyl group with 5 to 9 carbon atoms, or a C.sub.8-C.sub.30 aryl group, or a C.sub.6-C.sub.30 arylalkyl group; and (e) any combination thereof.

6. A composition according to claim 1, wherein the composition comprises an enzyme selected from the group consisting of: (a) a variant of thermomyces lanuginosa lipase having >90% identity with the wild type amino acid and comprises substitution(s) at T231 and/or N233; (b) a cleaning cellulase belonging to Glycosyl Hydrolase family 45; (c) a variant of AA560 alpha amylase endogenous to Bacillus sp. DSM 12649 having: (i) mutations at one or more of positions 9, 26, 149, 182, 186, 202, 257, 295, 299, 323, 339 and 345; and (ii) one or more substitutions and/or deletions in the following positions: 118, 183, 184, 195, 320 and 458; and (d) any combination thereof.

7. A composition according to claim 1, wherein the composition comprises an oxaziridinium-based bleach catalyst having the formula: ##STR00019## wherein: R.sup.1 is selected from the group consisting of: H, a branched alkyl group containing from 3 to 24 carbons, and a linear alkyl group containing from 1 to 24 carbons; R.sup.2 is independently selected from the group consisting of: H, a branched alkyl group comprising from 3 to 12 carbons, and a linear alkyl group comprising from 1 to 12 carbons; and n is an integer from 0 to 1.

8. A composition according to claim 1, wherein the composition comprises a perfume microcapsule.

Description

EXAMPLES

Example 1

Suitable Granular Laundry Detergent Compositions

(1) TABLE-US-00001 Ingredient Amount (in wt %) Anionic detersive surfactant (such as alkyl benzene from 8 wt % to 15 wt % sulphonate, alkyl ethoxylated sulphate and mixtures thereof) Non-ionic detersive surfactant (such as alkyl ethoxylated from 0.5 wt % to 4 wt % alcohol) Cationic detersive surfactant (such as quaternary from 0 to 4 wt % ammonium compounds) Other detersive surfactant (such as zwiterionic detersive from 0 wt % to 4 wt % surfactants, amphoteric surfactants and mixtures thereof) Carboxylate polymer (such as co-polymers of maleic acid from 1 wt % to 4 wt % and acrylic acid) Polyethylene glycol polymer (such as a polyethylene glycol from 0.5 wt % to 4 wt % polymer comprising poly vinyl acetate side chains) Polyester soil release polymer (such as Repel-o-tex and/or from 0.1 to 2 wt % Texcare polymers) Cellulosic polymer (such as carboxymethyl cellulose, methyl from 0.5 wt % to 2 wt % cellulose and combinations thereof) Other polymer (such as amine polymers, dye transfer from 0 wt % to 4 wt % inhibitor polymers, hexamethylenediamine derivative polymers, and mixtures thereof) Zeolite builder and phosphate builder (such as zeolite 4A 0 wt % and/or sodium tripolyphosphate) Other builder (such as sodium citrate and/or citric acid) from 0 wt % to 3 wt % Carbonate salt (such as sodium carbonate and/or sodium from 15 wt % to 30 wt % bicarbonate) Silicate salt (such as sodium silicate) from 0 wt % to 10 wt % Filler (such as sodium sulphate and/or bio-fillers) from 10 wt % to 40 wt % Source of available oxygen (such as sodium percarbonate) from 10 wt % to 20 wt % Bleach activator (such as tetraacetylethylene diamine from 2 wt % to 8 wt % (TAED) and/or nonanoyloxybenzenesulphonate (NOBS) Bleach catalyst (such as oxaziridinium-based bleach catalyst from 0 wt % to 0.1 wt % and/or transition metal bleach catalyst) Other bleach (such as reducing bleach and/or pre-formed from 0 wt % to 10 wt % peracid) Chelant (such as ethylenediamine-NN-disuccinic acid from 0.2 wt % to 1 wt % (EDDS) and/or hydroxyethane diphosphonic acid (HEDP) Photobleach (such as zinc and/or aluminium sulphonated from 0 wt % to 0.1 wt % phthalocyanine) Bluing agent (such as a molecule according to any of the BA from 0.00001 wt % to 0.1 wt % formulae given above, in particular BA10, BA20, BA51, BA55, BA56, BA57, BA60, BA66, BA69, BA78) Hueing agent (such as direct violet 99, acid red 52, acid blue from 0 wt % to 1 wt % 80, direct violet 9, solvent violet 13 and any combination thereof) Brightener (such as brightener 15 and/or brightener 49) from 0.1 wt % to 0.4 wt % Protease (such as Savinase, Savinase Ultra, Purafect, FN3, from 0.1 wt % to 0.4 wt % FN4 and any combination thereof) Amylase (such as Termamyl, Termamyl ultra, Natalase, from 0.05 wt % to 0.2 wt % Optisize, Stainzyme, Stainzyme Plus and any combination thereof) Cellulase (such as Carezyme and/or Celluclean) from 0.05 wt % to 0.2 wt % Lipase (such as Lipex, Lipolex, Lipoclean and any from 0.2 to 1 wt % combination thereof) Other enzyme (such as xyloglucanase, cutinase, pectate from 0 wt % to 2 wt % lyase, mannanase, bleaching enzyme) Fabric softener (such as montmorillonite clay and/or from 0 wt % to 4 wt % polydimethylsiloxane (PDMS) Flocculant (such as polyethylene oxide) from 0 wt % to 1 wt % Suds suppressor (such as silicone and/or fatty acid) from 0 wt % to 0.1 wt % Perfume (such as perfume microcapsule, spray-on perfume, from 0.1 wt % to 1 wt % starch encapsulated perfume accords, perfume loaded zeolite, and any combination thereof) Aesthetics (such as coloured soap rings and/or coloured speckles/noodles) from 0 wt % to 1 wt % Miscellaneous balance

Example 2

Effect of Builder Level on Bluing Agent Performance

(2) Test Methods

(3) Washing of Fabric: Each sample is run in a Tergotometer Apparatus (Copley Model 800) simulated wash with terry towel fabrics using the following typical conditions: 1.6 g in 0.8 litres of water, 2000 ppm dose, 20 C. bath temperature, water hardness of 3.76 mM (3:1 Ca.sup.2+:Mg.sup.2+ molar ratio), wash time of 15 minutes). Fabrics are rinsed once for 5 minutes and are dried in ambient conditions in the dark.

(4) L*, a* and b* and Delta WI Ganz values are measured on each fabric (eight internal replicates for each wash condition) using a Hunter LabScan XE reflectance spectrophotometer with D65 illumination, 10 observer and UV filter excluded. L is a measure of the amount of white or black in a sample; higher L values indicate a lighter colored sample. A measure of the amount of red or green in a sample is determined by a* values. A measure of the amount of blue or yellow in a sample is determined by b* values; lower (more negative) b* values indicate more blue on a sample.

(5) After rinsing and drying each swatch, the hueing efficiency, DE*.sub.eff, of the sample is assessed by determining the L*, a*, and b* value measurements of each swatch using a Hunter LabScan XE reflectance spectrophotometer with D65 illumination, 10 observer and UV filter excluded.

(6) Sample Solid Detergent Composition

(7) The following solid particulate laundry detergent compositions are created for testing:

(8) TABLE-US-00002 Low Builder High Builder Ingredient wt % wt % sodium linear alkylbenzene 10% 10% sulfonate alkyl ethoxylate 5.0% 5.0% Sodium tripolyphosphate .sup.0% 20% (STPP) sodium carbonate 15% 15% sodium sulfate 57.2% 37.2%.sup. sodium silicate 10% 10% Miscellaneous & minors 2.5% 2.5% Enzymes 0.3% 0.3%

(9) When present, dye is incorporated at a level to provide a dye intensity of 0.4 Au in 10 ml water. The dye is either a bluing agent having a structure in accordance with the present invention or violet DV9 dye (comparative example).

(10) Results

(11) TABLE-US-00003 Delta WI Ganz Delta WI Ganz (high vs low (vs unwashed builder Formulation fabric) formulation) Low Builder with DV9 4.8 4.8* (comparative) High Builder with DV9 Reference (comparative) Low Builder with bluing agent 1.9 1.9** (invention) High Builder with bluing agent Reference (comparative) *The 4.8 Delta WI Ganz difference between DV9 on terry towel between the high and low builder formulation is statistically significant at the 90% confidence interval. **The 1.9 Delta WI Ganz difference between bluing agent on terry towel between the high and low builder formulation is not statistically significant at the 90% confidence interval.

(12) A difference of +4 WI Ganz units is significantly noticeable by the human eye.

CONCLUSION

(13) Reducing the builder level results in a statistically significant reduction in the whiteness performance of a laundry detergent composition comprising DV9 (comparative example).

(14) However, reducing the builder level does not statistically significantly reduce the whiteness performance of a laundry detergent composition comprising a bluing agent (invention example).

(15) The dimensions and values disclosed herein are not to be understood as being strictly limited to the exact numerical values recited. Instead, unless otherwise specified, each such dimension is intended to mean both the recited value and a functionally equivalent range surrounding that value. For example, a dimension disclosed as 40 mm is intended to mean about 40 mm. Every document cited herein, including any cross referenced or related patent or application, is hereby incorporated herein by reference in its entirety unless expressly excluded or otherwise limited. The citation of any document is not an admission that it is prior art with respect to any invention disclosed or claimed herein or that it alone, or in any combination with any other reference or references, teaches, suggests or discloses any such invention. Further, to the extent that any meaning or definition of a term in this document conflicts with any meaning or definition of the same term in a document incorporated by reference, the meaning or definition assigned to that term in this document shall govern.