Pyrrolidone containing detergent composition
View Patent ↗A detergent composition comprises a hydrophobic polymer, a sulphonated polyacrylate, a pyrrolidone derivative and an anionic surfactant. The compositions find particular application in dishwashing applications and exhibit reduced tendency for spotting on the articles to be cleaned.
1. A detergent composition comprising:
(a) a hydrophobic polymer,
(b) a sulphonated polyacrylate,
(c) a pyrrolidone derivative,
(d) anionic surfactant, and,
(e) a non-phosphorus based builder which comprises methyl glycine diacetic acid and/or glutamic-N,N-diacetic acid and/or salts thereof.
2. A detergent composition according to claim 1 , wherein the hydrophobic polymer is present in an amount of from 0.1 to 10 wt %.
3. A detergent composition according to claim 1 , wherein the sulphonated polyacrylate is present in an amount of from 0.1 to 10 wt %.
4. A detergent composition according to claim 1 , wherein the sulphonated polyacrylate has a number average molecular weight in the range of from about 8,000 to about 15,000.
5. A detergent composition according to claim 1 , wherein the pyrrolidone derivative is present in an amount of from 0.05 to 10 wt %.
6. A detergent composition according to claim 1 , wherein the pyrrolidone derivative comprises an alkyl pyrrolidone compound.
7. A detergent composition according to claim 6 , wherein the pyrrolidone derivative comprises an N-alkyl pyrrolidone compound.
8. A detergent composition according to claim 7 , wherein the N-alkyl pyrrolidone compound comprises N-(n-octyl)-2-pyrrolidone.
9. A detergent composition according to claim 1 , wherein the anionic surfactant comprises an alkyl ester sulphate.
10. A detergent composition according to claim 1 , wherein the composition comprises 0.005 to 1.5 wt % anionic surfactant.
11. A detergent composition according to claim 1 , wherein the composition comprises 0.005 to 1.5 wt % alkyl ester sulphate and an N-alkyl pyrrolidone compound.
12. A detergent composition according to claim 1 , wherein the non-phosphorous based builder is present in an amount of from 0.1 to 80 wt %.
13. A detergent composition according to claim 1 wherein the composition is a dishwashing composition.
14. A method of cleaning dishware in an automatic dishwashing process, the method comprising the step of: providing a dishwashing composition according to claim 13 to an automatic dishwasher during an automatic dishwashing process.
15. A detergent composition according to claim 1 , wherein the hydrophobic polymer comprises a hydrophobically modified carboxylic acid based polymer.
16. A detergent composition according to claim 15 , wherein the hydrophobic polymer is a hydrophobically modified maleic acid based polymer.
17. A detergent composition according to claim 1 , wherein the hydrophobic polymer has a number average molecular weight in the range of from 8,000 to 15,000.
18. A detergent composition according to claim 1 , which is a liquid or gel composition.
19. A detergent composition according to claim 18 , which comprises 30-70 wt % water.
20. A detergent composition according to claim 1 , packaged in a water soluble film material.
21. A liquid or gel detergent composition comprising:
(a) a hydrophobic polymer,
(b) a sulphonated polyacrylate,
(c) an alkyl pyrrolidone, and
(d) an anionic surfactant;
wherein ingredients (a) to (d) are all different.
22. A detergent composition according to claim 21 , which comprises 30-70 wt % water.
23. A detergent composition according to claim 21 , which is an automatic dishwashing detergent composition.
24. A detergent composition according to claim 21 , wherein the said composition is phosphate-free.
25. A detergent composition comprising:—
(a) a hydrophobic polymer,
(b) a sulphonated polyacrylate,
(c) an alkyl pyrrolidone, and
(d) an anionic surfactant.
26. A detergent composition according to claim 25 , wherein the alkyl pyrrolidone is N-(n-octyl)-2-pyrrolidone.
27. A detergent composition according to claim 25 , wherein the said composition is phosphate-free.