Solid laundry detergent formulation

Abstract

A solid laundry detergent is provided, comprising: a detergent surfactant; a builder; a filler; and an antiredeposition agent of formula (I) R1—A1—R1 (I) wherein A1 is a divalent linking group having 4-24 carbons; and R1 is independently selected from formula (II), formula (III) and formula (IV) (II); (III) and (IV) wherein * in formula (II), formula (III) and formula (IV) is point of attachment to formula (I); a=1-2; b=1-2 and R2 is of formula (V) (V) wherein * in formula (V) is point of attachment to associated base formula; R3 is selected from hydrogen and C1‑22 alkyl; R4 and R5 are selected from hydrogen and C1‑2 alkyl, with proviso at least one of R4 and R5 is hydrogen in each subunit c; and c=0-30; and with proviso when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle.

Description

SOLID LAUNDRY DETERGENT FORMULATION

[0001] The present invention relates to a solid laundry detergent formulation. In particular, the present invention relates to a solid laundry detergent formulation, comprising a detergent surfactant; a builder; a filler; and an antiredeposition agent of formula (I)R1— A1— R1(I) wherein A1is a divalent linking group having 4 to 24 carbon atoms; and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV)wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V)wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in eachsubunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle.

[0002] Solid laundry detergents providing excellent overall cleaning are desirable to consumers. Such solid laundry detergents typically include surfactants among other components to deliver the consumer desired cleaning benefits. Nevertheless, increasing sensitivity for the environment and rising material costs, a move to reduce the utilization of surfactants in solid laundry detergents is growing. Consequently, detergent manufactures are seeking ways to reduce the amount of surfactant per unit dose of the solid laundry detergent while maintaining overall cleaning performance.

[0003] One approach for reducing the unit dose of surfactant is to incorporate polymers into the detergent formulations as described by Boutique et al. in U.S. Patent Application Publication No. 20090005288. Boutique et al. disclose a graft copolymer of polyethylene, polypropylene or polybutylene oxide with vinyl acetate in a weight ratio of from about 1 :0.2 to about 1 :10 for use in laundry detergent formulations having about 2 to about 20 wt% surfactant.

[0004] Notwithstanding, there remains a continuing need for solid laundry detergent formulations exhibiting maintained primary cleaning performance with a reduced surfactant loading; preferably, while also providing improved anti-redeposition performance. There is also a continuing need for new antiredeposition agents with improved biodegradability according to OECD 30 IF protocol when compared with conventional antiredeposition agents.

[0005] The present invention provides a solid laundry detergent formulation, comprising: a detergent surfactant; a builder; a filler; and an antiredeposition agent; wherein the antiredeposition agent is of formula (I)R1— A1— R1(I) wherein A1is a divalent linking group having 4 to 24 carbon atoms; and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula(IV)wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is I or 2; and wherein each R2is independently of formula (V)wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alky l group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and Rsis a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle.

[0006] The present invention provides a solid laundry detergent formulation, comprising: a detergent surfactant; a builder; a filler; and an antiredeposition agent; wherein the antiredeposition agent is of formula (I); wherein A1is a divalent linking group having 4 to 24 carbon atoms; and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV); wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V); wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a Ci-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso thatat least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water and wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus.

[0007] The present invention provides a solid laundry detergent formulation, comprising: 5 to 50 wt%, based on weight of the solid laundry detergent formulation, of a detergent surfactant; 20 to 75based on weight of the solid laundry' detergent formulation, of a builder; 0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of a filler; and 0.01 to 5 wt%, based on weight of the solid laundry’ detergent formulation, of an antiredeposition agent of formula (I); wherein A1is a divalent linking group having 4 to 24 carbon atoms; and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV); wherein the * in fonnula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V); wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and Rsis a hydrogen in each subunit <?; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water and wherein the solid laundry detergent formulation comprises less than 0. 1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus.

[0008] The present invention provides a solid laundry detergent formulation, comprising: 5 to 50 wt%, based on weight of the solid laundry detergent formulation, of a detergent surfactant; 20 to 75 wt%, based on weight of the solid laundry detergent formulation, of a builder; 0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of a filler; and 0.01 to 5 wt%, based on weight of the solid laundry' detergent formulation, of an antiredeposition agent of formula (I); wherein the antiredeposition agent of formula (I) is of formula (la)R1— (CH2)„- R1(la)wherein n is 5 to 24 and wherein each R1is independently selected from the group consisting of formula (II). formula (III) and formula (IV); wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V); wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a Ci-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water and wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus.

[0009] The present invention provides a solid laundry detergent formulation, comprising: 5 to 50 wt%, based on weight of the solid laundry detergent formulation, of a detergent surfactant; 20 to 75 wt%, based on weight of the solid laundry detergent formulation, of a builder; 0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of a filler; and 0.01 to 5 wt%, based on weight of the solid laundry' detergent formulation, of an antiredeposition agent of formula (la); wherein n is 5 to 24 and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV); wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V); wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein each R4and Rsis independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water; wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus; and wherein c is 2 to 30 in 70 to 100 mol% of the occurrences of R2in the antiredeposition agent.

[0010] The present invention provides a solid laundry detergent formulation, comprising: 5 to 50 wt%, based on weight of the solid laundry detergent formulation, of a detergent surfactant; 20 to 75 wt%, based on weight of the solid laundry detergent formulation, of a builder; 0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of a filler; and 0.01 to 5 wt%, based on weight of the solid laundry detergent formulation, of an antiredeposition agent of formula (la); wherein n is 5 to 24 and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV); wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V); wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water; wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus; wherein c is 2 to 30 in 70 to 100 mol% of the occurrences of R2in the antiredeposition agent; wherein 70 to 100 mol% of the R2groups in the antiredeposition agent are of formula (Va)R6— O— [CH2CH(R7)O]J,— * (Va) wherein the * in formula (Va) is the point of attachment to the associated base formula; wherein R6is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein each R7is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group; and wherein y is 2 to 30.

[0011] The present invention provides a solid laundry detergent formulation, comprising: 5 to 50 wt%, based on weight of the solid laundry detergent formulation, of a detergent surfactant; 20 to 75 wt%, based on weight of the solid laundry detergent formulation, of a builder; 0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of a filler; and 0.01 to 5 wt%, based on weight of the solid laundry detergent formulation, of an antiredeposition agent of formula (la); wherein n is 5 to 24 and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV); wherein the * in formula (II), formula (III) and formula (IV) is the point of attachmentto formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V): wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water; wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus; wherein c is 2 to 30 in 70 to 100 mol% of the occurrences of R2in the antiredeposition agent; wherein 70 to 100 mol% of the R2groups in the antiredeposition agent are of formula (Vb)R8— O— (EO)ft— (PO)i— (EO) / — * (Vb) wherein the * in formula (Vb) is the point of attachment to the associated base formula; wherein R8is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein EO is an ethylene oxide group; wherein PO is a propylene oxide group; wherein h is 0 to 30; wherein i is 0 to 30; wherein j is 0 and 30; and wherein h + i + j is 2 to 30.

[0012] The present invention provides a solid laundry detergent formulation, comprising: 5 to 50 wt%, based on weight of the solid laundry detergent formulation, of a detergent surfactant; 20 to 75 wt%, based on weight of the solid laundry detergent formulation, of a builder; 0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of a fdler; and 0.01 to 5 wt%, based on weight of the solid laundry detergent formulation, of an antiredeposition agent of formula (I); wherein the antiredeposition agent of formula (I) is selected from the group consisting of formula (lb), formula (Ic) and formula (Id)wherein p and r are independently 1 to 4; wherein A2is a divalent linking group having 2 to 22 carbon atoms; and wherein t is 2 to 10; wherein each R1is independently selected from the group consisting of formula (II), formula (III) and fonnula (IV); wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to fonnula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V); wherein the * in fonnula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C 1-22 alkyl group; wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30; wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water and wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus.

[0013] The present invention provides a method of washing a fabric article, comprising: providing a soiled fabric article; providing a solid laundry detergent formulation according to the present invention; providing a wash water; and applying the wash water and the solid laundry detergent formulation to the soiled fabric article to provide a cleaned fabric article.DETAILED DESCRIPTION

[0014] It has been surprisingly found that the solid laundry detergent formulations with an antiredeposition agent as described herein facilitate improvement in primary cleaning performance for sebum soil removal, while imparting good anti-redeposition performance for dust sebum and clay; and also exhibiting desirable biodegradability profiles according to OECD 301 F protocol.

[0015] Unless otherwise indicated, ratios, percentages, parts, and the like are by weight. Weight percentages (or wt%) in the composition are percentages of dry weight, i.e., excluding any water that may be present in the composition.

[0016] The term “solid” used herein and in the appended claims in reference to the solid laundry detergent formulations of the present invention means that the solid laundry detergent formulation does not perceptibly change shape when placed on a rigid, flat surface and left to stand at room temperature (22 °C) and pressure (101.4 kPa) for 24 hours.

[0017] The term "phosphate-free" as used herein and in the appended claims means compositions containing < 1 wt% (preferably, < 0.5 wt%; more preferably, < 0.2 wt%; still more preferably, < 0.01 wt%; yet still more preferably, < 0.001 wt%; most preferably, less than the detectable limit) of phosphate (measured as elemental phosphorus).

[0018] Preferably, the solid laundry detergent formulation of the present invention is selected from a powder laundry detergent formulation, a granular laundry detergent formulation, a laundry bar, a detergent bar and a dish bar. More preferably, the solid laundry detergent formulation of the present invention is selected from a powder laundry detergent formulation and a granular laundry detergent formulation. Most preferably, the solid laundry detergent formulation of the present invention is an anhydrous powder laundry detergent formulation containing < 5 wt% (preferable, < 1 wt%; more preferably, < 0.1 wt%; most preferably, < 0.01 wt%), based on weight of the solid laundry detergent formulation, of water.

[0019] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation) comprises: a detergent surfactant (preferably, 5 to 50 wt% (preferably, 6 to 30; more preferably, 7 to 20; most preferably, 8 to 18), based on weight of the solid laundry detergent formulation, of the detergent surfactant); a builder (preferably, 20 to 75 wt% (preferably, 20 to 65 wt%; more preferably, 25 to 50 wt%; most preferably, 27 to 35 wt%), based on weight of the solid laundry detergent formulation, of the builder); a filler (preferably, 0.1 to 74.09 wt% (preferably, 5 to 70 wt%; more preferably, 28.5 to 65 wt%; most preferably, 53.9 to 62 wt%), based on weight of the solid laundry detergent formulation, of the filler); and an antiredeposition agent (preferably, 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably, 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of the antiredeposition agent); wherein the antiredeposition agent is of formula (I) (preferably, wherein formula (I) is selected from the group consisting of formula (la), formula (lb), formula (Ic) and formula (Id) (more preferably, formula (la) and formula (lb))R1— A1— R1(I) wherein A1is a divalent linking group having 4 to 24 carbon atoms (preferably, wherein the divalent linking group, A1, is a divalent cyclic or acyclic, linear or branched, aliphatic hydrocarbon having 4 to 24 carbon atoms (preferably, 4 to 12 carbon atoms)); and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV) (preferably, formula (II) and formula (III); most preferably, formula (III))wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2 (preferably, 1); wherein b is 1 or 2 (preferably, 1); (preferably, wherein a = b) and wherein each R2is independently of formula (V) (i.e., the individual occurrences of R2in formula (II), formula (III) and formula (IV) can be the same or different from one another)wherein the * in formula (V) is the point of attachment to the associated base formula (i.e., formula (II), formula (III) or formula (IV)); wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group (preferably, a hydrogen and a C1-5 alkyl group; more preferably, a methyl group, an ethyl group and a butyl group; still more preferably, a methyl group and an n-butyl group; most preferably, an n-butyl group); wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30 (preferably, with the proviso that c is 2 to 30 (preferably, 2 to 25; more preferably, 2 to 17; most preferably, 4 to 12) in 70 to 100 mol% (preferably, 80 to 100 mol%; more preferably, 90 to 100 mol%; most preferably, 95 to 100 mol%); and with the proviso thatwhen the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle (preferably, with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the antiredeposition agent of formula (I) is selected from the group consisting of formula (lb), formula (Ic) and formula (Id)) (preferably, wherein the solid laundry detergent formulation comprises < 5 wt% (more preferably, < 1 wt%; still more preferably, < 0.1 wt%; most preferably, < 0.01 wt%), based on weight of the solid laundry detergent formulation, of water).

[0020] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: a detergent surfactant. More preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation) comprises: 5 to 50 wt% (preferably, 6 to 30 wt%; more preferably, 7 to 20 wt%; most preferably, 8 to 18 wt%), based on weight of the solid laundry detergent formulation, of a detergent surfactant. Still more preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 5 to 50 wt% (preferably, 6 to 30 wt%; more preferably, 7 to 20 wt%; most preferably, 8 to 18 wt%), based on weight of the solid laundry detergent formulation, of a detergent surfactant; wherein the detergent surfactant is selected from the group consisting of anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants and mixtures thereof. Yet still more preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 5 to 50 wt% (preferably, 6 to 30 wt%; more preferably, 7 to 20 wt%; most preferably, 8 to 18 wt%), based on weight of the solid laundry detergent formulation, of a detergent surfactant; wherein the detergent surfactant is selected from the group consisting of a mixture including an anionic surfactant and a non-ionic surfactant. Most preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 5 to 50 wt% (preferably, 6 to 30 wt%; more preferably, 7 to 20 wt%; most preferably, 8 to 18 wt%), based on weight of the solid laundry detergent formulation, of a detergent surfactant; wherein the detergent surfactant includes a surfactant selected from the group consisting of alkylbenzene sulfonate, alcohol sulfate, alcohol ethoxylate and a mixtures thereof (preferably, wherein the detergent surfactant includes a linear alkyl benzene sulfonate).

[0021] Anionic surfactants include alkyl sulfates, alkyl benzene sulfates, alkyl benzene sulfonic acids, alkyl benzene sulfonates, alkyl poly ethoxy sulfates, alkoxy lated alcohols, paraffin sulfonic acids, paraffin sulfonates, olefin sulfonic acids, olefin sulfonates, alpha-sulfocarboxylates, esters of alpha- sulfocarboxylates, alkyl glyceryl ether sulfonic acids, alkyl glyceryl ether sulfonates, sulfates of fatty acids, sulfonates of fatty acids, sulfonates of fatty acid esters, alkyl phenols, alkyl phenol polyethoxy ether sulfates, 2-acryloxy-alkane-l -sulfonic acid, 2-acryloxy-alkane-l -sulfonate, beta-alky loxy alkane sulfonic acid, beta-alkyloxy alkane sulfonate, amine oxides and mixtures thereof. Preferred anionic surfactants include Cs- o alkyl benzene sulfates, Cs-2o alkyl benzene sulfonic acid, Cs-2o alkyl benzene sulfonate, paraffin sulfonic acid, paraffin sulfonate, alpha-olefin sulfonic acid, alpha-olefin sulfonate, alkoxylated alcohols, Cs-20 alkyl phenols, amine oxides, sulfonates of fatty acids, sulfonates of fatty acid esters, Cs-io alkyl polyethoxy sulfates and mixtures thereof. More preferred anionic surfactants include C12-16 alkyl benzene sulfonic acid, C12-16 alkyl benzene sulfonate, C 12-18 paraffin-sulfonic acid, C12-18 paraffin-sulfonate, Ci 2- 16 alkyl poly ethoxy sulfate and mixtures thereof.

[0022] Non-ionic surfactants include alkoxylates (e.g., polyglycol ethers, fatty alcohol polyglycol ethers, alkylphenol polyglycol ethers, end group capped polyglycol ethers, mixed ethers, hydroxy mixed ethers, fatty acid polyglycol esters and mixtures thereof. Preferred non-ionic surfactants include fatty alcohol polyglycol ethers. More preferred non-ionic surfactants include secondary alcohol ethoxylates, ethoxylated 2-ethylhexanol, ethoxylated seed oils, butanol caped ethoxylated 2-ethylhexanol and mixtures thereof. Most preferred non-ionic surfactants include secondary alcohol ethoxylates.

[0023] Cationic surfactants include quaternary surface active compounds. Preferred cationic surfactants include quaternary surface active compounds having at least one of an ammonium group, a sulfonium group, a phosphonium group, an iodonium group and an arsonium group. More preferred cationic surfactants include at least one of a dialkyldimethylammonium chloride and alkyl dimethyl benzyl ammonium chloride. Still more preferred cationic surfactants include at least one of C16-18 dialkyldimethylammonium chloride, a Cs is alkyl dimethyl benzyl ammonium chloride di-tallow dimethyl ammonium chloride and di-tallow dimethyl ammonium chloride. Most preferred cationic surfactant includes di-tallow dimethyl ammonium chloride.

[0024] Amphoteric surfactants include betaines, amine oxides, alkylamidoalkylamines, alkylsubstituted amine oxides, acylated amino acids, derivatives of aliphatic quaternary ammonium compounds and mixtures thereof. Preferred amphoteric surfactants includederivatives of aliphatic quaternary ammonium compounds. More preferred amphoteric surfactants include derivatives of aliphatic quaternary ammonium compounds with a long chain group having 8 to 18 carbon atoms. Still more preferred amphoteric surfactants include at least one of C12-14 alkyldimethylamine oxide, 3-(N,N-dimethyl-N-hexadecyl-ammonio)propane-l -sulfonate, 3-(N,N-dimethyl-N-hexadecylammonio)-2-hydroxypropane- 1 -sulfonate. Most preferred amphoteric surfactants include at least one of C12-14 alkyldimethylamine oxide.

[0025] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises 20 to 75 wt% (preferably, 20 to 65 wt%; more preferably, 25 to 50 wt%: most preferably, 27 to 35 wt%), based on weight of the solid laundry detergent formulation, of a builder. More preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises 20 to 75 wt% (preferably, 20 to 65 wt%; more preferably, 25 to 50 wt%; most preferably. 27 to 35 wt%). based on weight of the solid laundry detergent formulation, of a builder; wherein the builder is selected from the group consisting of inorganic builders (e.g., tripolyphosphate, pyrophosphate); alkali metal carbonates; borates; bicarbonates; hydroxides; zeolites; citrates (e.g., sodium citrate); polycarboxylates; monocarboxylates; aminotrismethylenephosphonic acid; salts of aminotrismethylenephosphonic acid; hydroxyethanediphosphonic acid; salts of hydroxyethanediphosphonic acid; diethylenetriaminepenta(methylenephosphonic acid); salts of diethylenetriaminepenta(methylenephosphonic acid); ethylenediaminetetraethylene phosphonic acid; salts of ethylenediaminetetraethylene-phosphonic acid; oligomeric phosphonates; polymeric phosphonates; mixtures thereof (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation). Still more preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises 20 to 75 wt% (preferably, 20 to 65 wt%; more preferably, 25 to 50 wt%; most preferably, 27 to 35 wt%), based on weight of the solid laundry detergent formulation, of a builder; wherein the builder includes an alkali metal carbonate (preferably, wherein the builder is an alkali metal carbonate). Most preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises 20 to 75 wt% (preferably, 20 to 65 wt%; more preferably, 25 to 50 wt%; most preferably, 27 to 35 wt%), based onweight of the solid laundry detergent formulation, of a builder; wherein the builder includes sodium carbonate (preferably, wherein the builder is sodium carbonate).

[0026] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises 0.1 to 74.09 wt% (preferably, 5 to 70 wt%; more preferably, 28.5 to 65 wt%; most preferably, 53.9 to 62 wt%), based on weight of the solid laundry detergent formulation, of a filler. More preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises 0.1 to 74.09 wt% (preferably, 5 to 70 wt%; more preferably, 28.5 to 65 wt%; most preferably, 53.9 to 62 wt%), based on weight of the solid laundry detergent formulation, of a filler; wherein the filler is selected from the group consisting of sodium sulfate, sodium chloride and mixtures thereof.

[0027] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably, 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of an antiredeposition agent; wherein the antiredepostion agent is of formula (I) (preferably, wherein formula (I) is selected from the group consisting of formula (la), formula (lb), formula (Ic) and formula (Id) (more preferably, formula (la) and formula (lb))) R1— A1— R1(I) wherein A1is a divalent linking group having 4 to 24 carbon atoms (preferably, wherein the divalent linking group, A1, is a divalent cyclic or acyclic, linear or branched, aliphatic hydrocarbon having 4 to 24 carbon atoms (preferably, 4 to 12 carbon atoms)); and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV) (preferably, formula (II) and formula (III); most preferably, formula (III))wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2 (preferably, 1); wherein b is 1 or 2 (preferably, 1);(preferably, wherein a = £>) and wherein each R2is independently of formula (V) (i.e., the individual occurrences of R2in formula (II), formula (III) and formula (IV) can be the same or different from one another)wherein the * in formula (V) is the point of attachment to the associated base formula (i.e., formula (II), formula (III) or formula (IV)); wherein R3is selected from the group consisting of a hydrogen and a C 1-22 alkyl group (preferably, a hydrogen and a C1-5 alkyl group; more preferably, a methyl group, an ethyl group and a butyl group; still more preferably, a methyl group and an n-butyl group; most preferably, an n-butyl group); wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and Rsis a hydrogen in each subunit <2; and wherein c is 0 to 30 (preferably, with the proviso that c is 2 to 30 (preferably, 2 to 25; more preferably, 2 to 17; most preferably, 4 to 12) in 70 to 100 mol% (preferably, 80 to 100 mol%; more preferably, 90 to 100 mol%; most preferably, 95 to 100 mol%) of the occurrences of formula (V) in the antiredeposition agent); and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle (preferably, with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the antiredeposition agent of formula (I) is selected from the group consisting of formula (lb), formula (Ic) and formula (Id)). More preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of an antiredeposition agent of formula (I); wherein formula(I) is selected from the group consisting of formula (la), formula (lb), formula (Ic) and formula (Id) (preferably, formula (la) and formula (lb))R1— (CH2)„ — R1(la)wherein n is 5 to 24 (preferably, 5 to 12); wherein p and r are independently 1 to 4 (preferably, 1 to 2; more preferably, wherein p and r are 2)(preferably, wherein the sum of p + r is 2 to 6 (preferably, 2 to 5; more preferably, 4)); wherein A2is a divalent linking group having 2 to 22 carbon atoms (preferably, wherein the divalent linking group, A2, is a divalent, cyclic or acyclic, linear or branched, aliphatic hydrocarbon having 2 to 22 carbon atoms (preferably, 2 to 10 carbon atoms; more preferably, 3 to 6 carbon atoms; most preferably, 4 carbon atoms); more preferably, wherein the divalent linking group, A2, is an alkanediyl having 2 to 22 carbon atoms (preferably, 2 to 10 carbon atoms; more preferably, 3 to 6 carbon atoms; still more preferably, 3 to 5; most preferably, 4 carbon atoms)); and wherein l is 2 to 10 (preferably, 3 to 6; more preferably, 3 to 5; most preferably, 4).

[0028] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably, 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of an antiredeposition agent; wherein the antiredeposition agent is of formula (I) (preferably, wherein formula (I) is selected from the group consisting of formula (la), formula (lb), formula (Ic) and formula (Id) (more preferably, formula (la) and formula (lb))); wherein each R1is independently selected from the group consisting of formula (II), formula(III) and formula (IV) (preferably, formula (II) and formula (III); most preferably, formula (III))wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2 (preferably, 1); wherein b is 1 or 2 (preferably, 1);(preferably, wherein a = b) and wherein each R2is independently of formula (V) (i.e., the individual occurrences of R2in formula (II), formula (III) and formula (IV) can be the same or different from one another);wherein the * in formula (V) is the point of attachment to the associated base formula (i.e., formula (II), formula (III) or formula (IV)); wherein R3is selected from the group consisting of a hydrogen and a C 1-22 alkyl group (preferably, a hydrogen and a C1-5 alkyl group; more preferably, a methyl group, an ethyl group and a butyl group; still more preferably, a methyl group and an / / -butyl group; most preferably, an / / -butyl group); wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and R5is a hydrogen in each subunit c; and wherein c is 0 to 30 (preferably, with the proviso that c is 2 to 30 (preferably, 2 to 25; more preferably, 2 to 17; most preferably, 4 to 12) in 70 to 100 mol% (preferably, 80 to 100 mol%; morepreferably, 90 to 100 mol%; most preferably, 95 to 100 mol%) of the occurrences of formula (V) in the antiredeposition agent).

[0029] Preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably, 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of an antiredeposition agent; wherein the antiredeposition agent is of formula (I) (preferably, wherein formula (I) is selected from the group consisting of formula (la), formula (lb), formula (Ic) and formula (Id) (more preferably, formula (la) and formula (lb))); wherein c is 2 to 30 for an average of 70 to 100 mol% (preferably, 80 to 100 mol%; more preferably, 90 to 100 mol%; most preferably, 95 to 100 mol%) of the R2groups of formula (V). More preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably, 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of an antiredeposition agent; wherein the antiredeposition agent is of formula (1) (preferably, wherein formula (I) is selected from the group consisting of formula (la), formula (lb), formula (Ic) and formula (Id) (preferably, formula (la) and formula (lb)); wherein an average of 70 to 100 mol% (preferably, 80 to 100 mol%; more preferably, 90 to 100 mol%; most preferably, 95 to 100 mol%) of the R2groups of formula (V) are of formula (Va)R6— O— [CH2CH(R7)O]J, — * (Va) wherein the * in formula (Va) is the point of attachment to the associated base formula (i.e., formula (II), formula (III) or formula (IV)); wherein R6is selected from the group consisting of a hydrogen and a C 1-22 alkyl group (preferably, a hydrogen and a C1-5 alkyl group; more preferably, a methyl group, an ethyl group and a butyl group; still more preferably, a methyl group and an n-butyl group; most preferably, an n-butyl group); wherein each R7is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group; and wherein y is 2 to 30. Most preferably, the solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation), comprises: 0.01 to 10 wt% (preferably, 0.05 to 5 wt%; more preferably, 0.1 to 2 wt%; most preferably, 0.4 to 1.5 wt%), based on weight of the solid laundry detergent formulation, of an antiredeposition agent; wherein the antiredeposition agent is of formula (I) (preferably, wherein formula (I) is selected from the group consistingof formula (la), formula (lb), formula (Ic) and formula (Id) (preferably, formula (la) and formula (lb)); wherein an average of 70 to 100 mol% (preferably, 80 to 100 mol%; more preferably, 90 to 100 mol%; most preferably, 95 to 100 mol%) of the R2groups of formula (V) are of formula (Vb)R8— O— (EO)ft— (PO)i— (EO) / — * (Vb) wherein the * in formula (Vb) is the point of attachment to the associated base formula (i.e., formula (II), formula (III) or formula (IV)); wherein R8is selected from the group consisting of a hydrogen and a Ci-22 alkyl group (preferably, a hydrogen and a C1-5 alkyl group; more preferably, a methyl group, an ethyl group and a butyl group; still more preferably, a methyl group and an / ? -butyl group; most preferably, an n-butyl group); wherein EO is an ethylene oxide group; wherein PO is a propylene oxide group; wherein h is 0 to 30 (preferably, 0 to 1); wherein i is 0 to 30 (preferably, 2 to 5); wherein j is 0 and 30 (preferably, 2 to 6); and wherein h + i +j is 2 to 30 (preferably, 4 to 12).

[0030] Preferably, the solid laundry detergent formulation of the present invention, optionally further an optional ingredient selected from the group consisting of a bleaching agent (e.g., sodium perborate, sodium percarbonate); a bleach activator (e.g., tetraacetylethylenediamine (TAED), nonanoyloxybenzenesulfonate (NOBS)); a stabilizer (e.g., phosphonates); a foam regulator (e.g., soap, silicone oil, paraffins); an enzyme (e.g., protease, cellulase, amylase, lipase); an optical brightener (e.g., stilbene-, biphenyldistyryl derivative); a soil repellent (e.g., poly(ethylene glycol terephthalate) derivative); a fabric softener (e.g., cationic hydroxyethylcellulose, polyquaternium polymers, silicones); a fragrance and mixtures thereof.

[0031] Preferably, the method of washing a fabric article of the present invention, comprises: providing a soiled fabric article (preferably, wherein the soiled fabric article is soiled with at least one of sebum oil, dust and clay soil; more preferably, wherein the soiled fabric article is soiled with sebum oils and clay soil)(preferably, wherein the soiled fabric article is selected from the group consisting of stained cotton fabric, stained cotton interlock fabric, stained cotton terry fabric, stained polyester cotton blend fabric, stained polyester knit fabric, stained polyester woven fabric and mixtures thereof); providing a solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation); providing a wash water; and applying the wash water and the solid laundry detergent formulation to the soiled fabric article (preferably, with agitation) to provide a cleaned fabric article. More preferably, the method of washing a fabric article of the present invention, comprises: providing a soiled fabric article(preferably, wherein the soiled fabric article is soiled with at least one of sebum oil, dust and clay soil; more preferably, wherein the soiled fabric article is soiled with sebum oils and clay soil)(preferably, wherein the soiled fabric article is selected from the group consisting of stained cotton fabric, stained cotton interlock fabric, stained cotton terry fabric, stained polyester cotton blend fabric, stained polyester knit fabric, stained polyester woven fabric and mixtures thereof); providing a solid laundry detergent formulation of the present invention (preferably, wherein the solid laundry detergent formulation is a powder laundry detergent formulation); providing a wash water; providing a rinse water; applying the wash water and the solid laundry detergent formulation to the soiled fabric article (preferably, with agitation) to provide a cleaned fabric article; and then applying the rinse water to the cleaned fabric article to remove the laundry detergent formulation from the cleaned fabric article.

[0032] Some embodiments of the present invention will now be described in detail in the following Examples.Synthesis SI: MeO(EO)7(PO)i6 block copolymerAnhydrous 2-methoxy ethanol (22.8 g; 0.30 mmol), containing 3 wt% potassium (obtained bydissolving potassium hydroxide in the anhydrous 2-methoxyethanol under nitrogen), was introduced to a clean and dry stainless steel reactor. The reactor contents were then heated to 120 °C and ethylene oxide (92.5 g; 2.1 mmol) was added with a rate of 0.5 mL / min over 4 hrs with a 1 hr digest. The reactor contents were then brought to 115 °C and propylene oxide (279 g; 4.8 mmol) was added to the reactor contents at a rate of 0.5 mL / min over 20 hrs and a 20 hr digest time. The reactor contents were then cooled to room temperature and purged with nitrogen. The polymer product was recovered from the reactor and neutralized with 1.14 g of glacial acetic acid.Synthesis S2; Michael Addition of 1,6-Diaminohexane to Dimethyl Maleate

[0033] A 100 mL 3-necked, glass, round bottom flask equipped with a magnetic stir bar was charged with 1,6-diaminohexane (4.0 g, 34 mmol, from Sigma Aldrich > 99%) and ethanol (32 mL). Gentle mixing was initiated, and the flask was equipped with a cold-water condenser connected to an oil bubbler. The condenser was sealed to the center neck with silicone grease and the flask was further sealed with 2 rubber septa. The flask was then cooled by submerging in an ice water bath to absorb the heat of reaction. A thermocouple was inserted into one septum to track temperature during reaction. To the contents of the flask was slowly added dimethyl maleate (9.9 g, 68 mmol, from TCI America 97%) via a syringe over 2 minutes. An exotherm was observed during the addition of dimethyl maleate and 3 minutes after. Once the temperature stopped increasing, the flask was placed on areaction block heater and stirred at 60 °C for 5 hours. Progress of the reaction was monitored by1H and13C NMR spectroscopy. Upon complete conversion of amine to disubstituted adduct, ethanol was distilled off in a rotary evaporator to yield a slightly viscous light yellow adduct.Example 1: Preparation of antiredeposition agent

[0034] In Example 1, a transesterification product antiredeposition agent of the following general formulawas prepared by charging the alkoxylate polymer product of Synthesis SI (R-OH)(25.9 g; 20.7 mmol), material prepared according to Synthesis S2 (1.90 g; 4.7 mmol) and titanium isoproxide (0.19 g; 0.67 mmol; from Sigma Aldrich 99.999%) to a 250 mL Airfree® Schlenk flask with a magnetic stir bar. The flask was sealed with a septum with a needle probe thermocouple inserted, attached to a Schlenk line, and then heated in an OptiTHERM® Reaction Block attached to an IKA magnetic heating plate with a set point temperature of 120 °C while under a nitrogen blanket. Once the contents of the flask reached a temperature of 120 °C, vacuum was applied to the flask contents via a mechanical pump with an intervening solvent trap housed inside a dewar flask and submerged in a bed of dry ice. The mixing speed was adjusted to 230 rpm. The flask contents were held at a temperature of ~ 120 °C for 8.5 hours under vacuum. The flask contents were then cooled and characterized by NMR to confirm completion of the reaction.Comparative Examples CF1-CF2 and Example Fl: Powder Laundry Detergent

[0035] The powder laundry detergent formulation of Comparative Examples CF1-CF2 and Example Fl used in the subsequent tests were prepared by combining 1 L of hardness adjusted water, 0.5 g of powder laundry detergent formulation as described in TABLE 1.TABLE 1Anti-redeposition

[0036] The anti-redeposition performance of the combination of the standard liquid laundry detergent + antiredeposition agent of Comparative Examples CF1-CF2 and Example Fl was assessed in a Terg-o-tometer Model 7243ES agitated at 90 cycles per minute with the conditions noted in TABLE 2. The test procedure was repeated three times for a total of three cycles before imaging for anti-redeposition performance.T BLE 2

[0037] The antiredeposition performance was determined by calculating the AE measured with a MACH 5+ instrument (L, a & b). The results are noted in TABLE 3, wherein AE* is according to the equationAE* - AEaw - AEbwwherein AEaw is measured from fabrics after washing, and AEbw is measured from fabrics before washing. A higher AE* corresponds with better antiredeposition performance.TABLE 3

Claims

We claim:

1. A solid laundry detergent formulation, comprising: a detergent surfactant; a builder; a filler; and an antiredeposition agent; wherein the antiredeposition agent is of formula (I)R1— A1— R1(I) wherein A1is a divalent linking group having 4 to 24 carbon atoms; and wherein each R1is independently selected from the group consisting of formula (II), formula (III) and formula (IV)wherein the * in formula (II), formula (III) and formula (IV) is the point of attachment to formula (I); wherein a is 1 or 2; wherein b is 1 or 2; and wherein each R2is independently of formula (V)wherein the * in formula (V) is the point of attachment to the associated base formula; wherein R3is selected from the group consisting of a hydrogen and a C1-22 alkyl group;wherein each R4and R5is independently selected from the group consisting of a hydrogen and a C1-2 alkyl group, with the proviso that at least one of R4and Rsis a hydrogen in each subunit c; and wherein c is 0 to 30; and with the proviso that when the divalent linking group, A1, has 4 carbon atoms, the divalent linking group, A1, includes a cycle.

2. The solid laundry detergent formulation of claim 1 , wherein the solid laundry detergent formulation comprises < 5 wt%, based on weight of the solid laundry detergent formulation, of water and wherein the solid laundry detergent formulation comprises less than 0.1 wt%, based on weight of the solid laundry detergent formulation, of phosphate, measured as elemental phosphorus.

3. The solid laundry detergent formulation of claim 2, wherein the solid laundry detergent formulation comprises5 to 50 wt%, based on weight of the solid laundry detergent formulation, of the detergent surfactant;20 to 75 wt%, based on weight of the solid laundry detergent formulation, of the builder;0. 1 to 74.09 wt%, based on weight of the solid laundry detergent formulation, of the filler; and0.01 to 5 wt%, based on weight of the solid laundry detergent formulation, of the antiredeposition agent.

4. The solid laundry detergent formulation of claim 3, wherein the antiredeposition agent of formula (I) is of formula (la)R1— (CH2)„ — R1(la) wherein n is 5 to 24.

5. The solid laundry detergent formulation of claim 4, wherein c is 2 to 30 in 70 to 100 mol% of the occurrences of R2in the antiredeposition agent.

6. The solid laundry detergent formulation of claim 5, wherein 70 to 100 mol% of the R2groups in the antiredeposition agent are of formula (Va)R6— O— [CH2CH(R7)O]J,— * (Va) wherein the * in formula (Va) is the point of attachment to the associated base formula; wherein R6is selected from the group consisting of a hydrogen and a C1-22 alkyd group; wherein each R7is independently selected from the group consisting of a hydrogen and a C1-2 alky 1 group; and wherein y is 2 to 30.

7. The solid laundry detergent formulation of claim 5, wherein 70 to 100 mol% of the R2groups in the antiredeposition agent are of formula (Vb)R8— O— (EO) / i— (PO)i— (EO) / — * (Vb) wherein the * in formula (Vb) is the point of attachment to the associated base formula; wherein R8is selected from the group consisting of a hydrogen and a C1-22 alkyl group; wherein EO is an ethylene oxide group; wherein PO is a propylene oxide group; wherein h is 0 to 30; wherein i is 0 to 30; wherein j is 0 and 30; and wherein h + i + j is 2 to 30.

8. The solid laundry detergent formulation of claim 8, further comprising an optional ingredient selected from the group consisting of a bleaching agent, a bleach activator, a stabilizer, a foam regulator, an enzyme, an optical brightener, a soil repellent, a fabric softener, a fragrance and mixtures thereof.

9. The solid laundry detergent formulation of claim 3, wherein the antiredeposition agent of formula (I) is selected from the group consisting of formula (lb), formula (Ic) and formula (Id)wherein p and r are independently 1 to 4; wherein A2is a divalent linking group having 2 to 22 carbon atoms; and wherein t is 2 to 10.

10. A method of washing a fabric article, comprising: providing a soiled fabric article; providing a solid laundry detergent fonnulation according to claim 1; providing a wash water; and applying the wash water and the solid laundry detergent formulation to the soiled fabric to provide a cleaned fabric article to provide a washed fabric article.

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