Solid free-flowing particulate laundry detergent composition

1. A solid free-flowing particulate laundry detergent composition comprising:

(a) from about 0.1 wt % to about 5 wt % hueing agent particle comprising:

(i) from about 2 wt % to about 10 wt % hueing agent, wherein the hueing agent has the following structure:

wherein:

R 1 and R 2 are independently selected from the group consisting of: H; alkyl; alkoxy; alkyleneoxy; alkyl capped alkyleneoxy; urea; and amido;

R 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 an average molar distribution of at least about four alkyleneoxy moieties; and

(ii) from about 60 wt % to about 98 wt % clay; and

(b) from about 35 wt % to about 80 wt % spray-dried particle comprising:

(a) from about 8 wt % to about 24 wt % alkyl benzene sulphonate anionic detersive surfactant;

(b) from about 5 w % to about 18 wt % silicate salt;

(c) from 0 wt % to 10 wt % sodium carbonate; and

(d) from 0 wt % to 5 wt % carboxylate polymer; and

(c) from about 0.1 wt % to about 5 wt % polymer particle comprising:

(i) from about 70 wt % to about 90 wt % co-polymer, wherein the co-polymer comprises:

(i.i) from about 50 to less than about 98 wt % structural units derived from one or more monomers comprising carboxyl groups;

(i.ii) from about 1 to less than about 49 wt % structural units derived from one or more monomers comprising sulfonate moieties; and

(i.iii) from about 1 to about 49 wt % structural units derived from one or more types of monomers selected from ether bond-containing monomers represented by formulas (I) and (II):

wherein in formula (I), R 0 represents a hydrogen atom or CH 3 group, R represents a CH 2 group, CH 2 CH 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 1 is a hydrogen atom or C 1 to C 20 organic group;

wherein in formula (II), R 0 represents a hydrogen atom or CH 3 group, R represents a CH 2 group, CH 2 CH 2 group or single bond, X represents a number 0-5, and R 1 is a hydrogen atom or C 1 to C 20 organic group; and

(ii) from about 10 wt % to about 30 wt % salt, wherein the salt is selected from sulphate salt and/or carbonate salt.

2. A composition according to claim 1 , wherein the composition comprises from about 0.5 wt % to about 20 wt % ethoxylated alkyl sulphate particle comprising: (i) from about 40 wt % to about 60 wt % partially ethoxylated alkyl sulphate anionic detersive surfactant, wherein the partially ethoxylated alkyl sulphate anionic detersive surfactant has a molar average degree of ethoxylation of from about 0.8 to about 1.2, and wherein the partially ethoxylated alkyl sulphate anionic detersive surfactant has a molar ethoxylation distribution such that: (i.i) from about 40 wt % to about 50 wt % is unethoxylated; (i.ii) from about 20 wt % to about 30 wt % has a degree of ethoxylation of 1; (i.iii) from about 20 wt % to about 40 wt % has a degree of ethoxylation of about 2 or greater; (ii) from about 20 wt % to about 50 wt % salt, wherein the salt is selected from sulphate salt and/or carbonate salt; and (iii) from about 10 wt % to about 30 wt % silica.

3. A composition according to claim 1 , wherein the composition comprises from about 1 wt % to about 30 wt % linear alkyl benzene sulphonate particle comprising:

(a) from about 30 wt % to about 50 wt % alkyl benzene sulphonate anionic detersive surfactant; and

(b) from about 50 wt % to about 70 wt % salt, wherein the salt is a sodium salt and/or a carbonate salt.

4. A composition according to claim 1 , wherein the composition comprises from about 0.1 wt % to about 5 wt % silicone particle comprising:

(a) from about 10 wt % to about 20 wt % silicone; and

(b) from about 50 wt % to about 80 wt % carrier.

5. A composition according to claim 1 , wherein the composition is substantially free of zeolite builder, phosphate builder and sodium carbonate.

6. A composition according to claim 1 , wherein the hueing agent particle comprises montmorillonite clay.

7. A composition according to claim 1 , wherein the spray-dried particle further comprises from about 54 wt % to about 87 wt % sodium sulphate.

8. A composition according to claim 2 , wherein the ethoxylated alkyl sulphate particle comprises from about 20 wt % to about 50 wt % sodium sulphate.

9. A composition according to claim 2 , wherein the weight ratio of partially ethoxylated alkyl sulphate anionic detersive surfactant to silica present in the ethoxylated alkyl sulphate particle is in the range of from about 2:1 to about 5:1.