Solid free-flowing particulate laundry detergent composition

Patent metadata

Field	Value
Publication number	US-9951301-B2
Application number	US-201615084503-A
Country	US
Kind code	B2
Filing date	Mar 30, 2016
Priority date	Mar 30, 2015
Publication date	Apr 24, 2018
Grant date	Apr 24, 2018

Abstract

A solid free-flowing particulate laundry detergent composition comprising: (a) from 0.1 wt % to 5 wt % hueing agent particle comprising: (i) from 2 wt % to 10 wt % hueing agent, wherein the hueing agent has the following structure:

wherein:
R1 and R2 are independently selected from the group consisting of: H; alkyl; alkoxy; alkyleneoxy; alkyl capped alkyleneoxy; urea; and amido;
R3 is a substituted aryl group;
X is a substituted group comprising sulfonamide moiety, and wherein the substituent group comprises at least one alkyleneoxy chain that comprises an average molar distribution of at least four alkyleneoxy moieties; and
(ii) from 60 wt % to 98 wt % clay; and (b) from 0.5 wt % to 20 wt % ethoxylated alkyl sulphate particle including: (i) from 40 wt % to 60 wt % partially ethoxylated alkyl sulphate anionic detersive surfactant; (ii) from 20 wt % to 50 wt % salt; and (iii) from 10 wt % to 30 wt % silica.

First claim

The invention claimed is:

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;

(b) 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 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; 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 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.

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 hueing agent particle comprises montmorillonite clay.

6. A composition according to claim 1 , wherein the ethoxylated alkyl sulphate particle comprises from about 20 wt % to about 50 wt % sodium sulphate.

7. A composition according to claim 1 , 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.

Assignees

• Procter & Gamble

Inventors

• Chieffi Andre
• Dorgan Jill Robyn
• Mcmeekin Anthony
• Brooker Alan Thomas
• Pickering Carly
• Gould Paul Anthony
• Caufield William Alexander

Classifications

• C11D17/06

  Powder; Flakes; Free-flowing mixtures; Sheets · CPC title

• C11D3/40

  Dyes {; Pigments} · CPC title

• C11D3/126

  in solid compositions · CPC title

• C11D3/124

  Silicon containing, e.g. silica, silex, quartz or glass beads · CPC title

• C11D3/10

  Carbonates {; Bicarbonates} · CPC title