Disintegration adjuncts for use in detergent and cleaning compositions

• US 20030036497A1
• Filed: 06/25/2001
• Published: 02/20/2003
• Est. Priority Date: 06/25/2001
• Status: Abandoned Application

• Current Assignee: Clariant GmbH (Clariant AG)
• Original Assignee: Clariant International Ltd (Clariant AG)
• Inventors: Bauer, Harald, Manske, Scott D., Holz, Josef, Schimmel, Gunther
• Application Number:
  US09/888,960
• Publication Number:
  US 20030036497A1
• Time in Patent Office: Days
• US Class Current: 510/446
• CPC Class Codes: C11D 3/1273 Crystalline layered silicates of type NaMeSixO2x+1YH2O
• CPC Class Codes: C11D 3/222 Natural or synthetic polysaccharides, e.g. cellulose, starch, gum, alginic acid or cyclodextrin
• CPC Class Codes: C11D 3/3761 in solid compositions

Abstract

Disintegration adjunct particles for use in detergents and cleaning agents include an alkali layer silicate and a water swellable compound. The adjunct particles provide increased disintegration of solid particles in detergents and cleaning agents by facilitating the penetration of water into the adjunct particles and hence increase the expansion rate of the water swellable compound. The adjunct particles may also include a readily soluble, non-bleaching active detergent substance to thereby increase the disintegration rate.

Claims

1. A detergent disintegration adjunct comprising particles of at least one alkali layer silicate;

and at least one water swellable component.

2. The detergent disintegration adjunct of claim 1, wherein said particles have an average particle of size greater than 200 μ

m and an average particle size of less than 2000 μ

m.

3. The detergent disintegration adjunct of claim 1, wherein said at least one alkali layer silicate is of the formula:

NaMSi_xO_2x+1 x yH₂O,

wherein M represents sodium or hydrogen, x a number from 1.9 through 4, and y a number from 0 through 20.

4. The detergent disintegration adjunct of claim 3, wherein x is equal to 2,3, or 4.

5. The detergent disintegration adjunct of claim 1, wherein said at least one alkali layer silicate is a sodium disilicate.

6. The detergent disintegration adjunct of claim 1, wherein said at least one water swellable component is selected from the group consisting of cellulosics, polycarboxylic acids and the salts thereof, and cross-linked polycarboxylic acids and the salts thereof.

7. The detergent disintegration adjunct of claim 1, wherein said at least one water swellable component is a polycarboxylate.

8. The detergent disintegration adjunct of claim 1, wherein said at least one water swellable component is a crosslinked copolymer of acrylic and maleic acid.

12. The disintegration system of claim 7, wherein said at least one alkali layer silicate is of the formula:

NaMSi_xO_2x+1 x yH₂O,

wherein M represents sodium or hydrogen, x a number from 1.9 through 4, and y a number from 0 through 20.

13. The disintegration system of claim 8, wherein x is equal to 2, 3, or 4.

9. A disintegration system for a detergent or cleaning agent comprising particles of:

1) at least one alkali layer silicate;

2) at least one water swellable component; and

3) at least one readily soluble, active detergent component.

10. The disintegration system of claim 9, wherein said at least one readily soluble, active detergent component is non-bleaching.

11. The disintegration system of claim 10, wherein said at least one readily soluble, non-bleaching active detergent component is selected from the group consisting of:

alkali or ammonium carbonate, -hydrogencarbonate, carbonate salt mixtures, metasilicate, spray dried silicate, sulfate, hydrogensulfate, -halogenide, -phosphate, dihydrogen phosphate, hydrogen phosphate, polyphosphate, pyrophosphate, borate, Borax, organic acids and salts thereof, soluble organic compositions and hydrates thereof.

14. The disintegration system of claim 9, wherein said at least one alkali layer silicate is a sodium disilicate.

15. The disintegration system of claim 9, wherein said at least one water swellable component is selected from the group consisting of cellulosics, polycarboxylic acids and the salts thereof, and cross-linked polycarboxylic acids and the salts thereof.

16. The disintegration system of claim 9, wherein said at least one water swellable component is a polycarboxylate.

17. The disintegration system of claim 9, wherein said at least one water swellable component is a crosslinked copolymer of acrylic and maleic acid.

18. The disintegration system of claim 9, wherein the ratio between components 1) to components 2) is 0.5 to 1 to 20 to 1.

19. The disintegration system of claim 9, wherein the ratio between component 1) to component 2) to component 3) is 0.5 to 1 to 0.5 to 20 to 1 to 60.

20. A method of forming a disintegration system for detergent or cleaning agent comprising the steps of:

providing at least one alkali layer silicate and at least one water swellable component;

mixing said at least one alkali layer silicate and said at least one water swellable component to form a mixture; and

processing said mixture to form particles.

21. The method of claim 20, wherein said particles have a non-uniform morphology.

22. The method of claim 20, wherein said at least one alkali layer silicate is a sodium disilicate.

23. The method of claim 20, wherein said at least one water swellable component is a polycarboxylate.

24. The method of claim 20, wherein said at least one water swellable component is a crosslinked copolymer of acrylic and maleic acid.

25. The method of claim 20, further comprising providing at least one readily soluble, active detergent component and mixing said at least one readily soluble, active detergent component with at least one alkali layer silicate and at least one water swellable component to form said mixture.

26. The method of claim 25, wherein said at least one readily soluble, active detergent component is non-bleaching.

27. The method of claim 26, wherein said at least one readily soluble, active, non-bleaching detergent component is selected from the group consisting of:

alkali or ammonium carbonate, -hydrogencarbonate, carbonate salt mixtures, metasilicate, spray dried silicate, sulfate, hydrogensulfate, -halogenide, -phosphate, dihydrogen phosphate, hydrogen phosphate, polyphosphate, pyrophosphate, borate, Borax, organic acids and salts thereof, soluble organic compositions and hydrates thereof.

28. A cogranulate comprising:

a) at least one crystalline layered sodium silicate of the formula NaMSi_xO_2x+1*yH₂O. wherein M represents sodium or hydrogen, x represents a number from 1.9 to 4 and y a number from 0 to 20; and

b) at least one polycarboxylate;

wherein the ratio between components a) to b) is 0.5 to 1 to 20 to 1, and wherein said cogranulate is produced by contacting, mixing, roller compacting, grinding and kernel fractioning components a) and b).

29. A cogranulate disintegration system for detergent and cleaning agents comprising:

1) at least one crystalline layered sodium silicate a) of the formula NaMSi_xO_2x+1 * yH₂O, wherein M represents sodium or hydrogen, x represents a number from 1.9 to 4 and y a number from 0 to 20;

2) at least one polycarboxylate b), wherein the ratio between components a) to b) is 0.5 to 1 to 20 to 1; and

3) at least one readily soluble, non bleaching active detergent substance c), wherein the ratio of component a) to component b) to component c) is 0.5 to 1 to 0.5 to 20 to 1 to 60., and

wherein said cogranulate disintegration system is produced by sequentially bringing in contact, mixing, roller compacting, grinding and kernel fractioning components a), b), and c).

30. The disintegration system of claim 29, further comprising at least one hardening agent.

31. The disintegration system of claim 30, wherein said at least one hardening agent is selected from the group consisting of alkali silicate,non ionic surfactant, anionic surfactant, cationic surfactant, polycarboxylate polymer, polycarboxylate copolymer, polyethylenglycol, bentonite, hectorite, saponite, and dye stuff.

32. A method of forming a cogranulate disintegration system for detergent and cleaning agent solids comprising the steps of:

providing at least one alkaline layered silicate and at least one polycarboxylate;

mixing said at least one alkaline layered silicate and said at least one polycarboxylate

roller compacting said mixture;

grinding said mixture; and

kernel fracturing said mixture to form particles.

33. The method of claim 32, wherein said mixing step is characterized by a mixing cycle of greater than 5 seconds and a mixing cycle of less than 60 minutes.

34. The method of claim 32, wherein said roller compacting step is accomplished at a temperature above 10°

C. and a temperature below 200°

C.

35. The method of claim 32, wherein said roller compacting step is characterized by a line pressure between 2 kN/cm and 200 kN/cm roller width.

36. The method of claim 32, wherein said particles have an average particle size of of 200 to 2000 μ

m.

37. A detergent or cleaning agent comprising:

a) 0.5 to 99 weight-% of adjunct particles, each adjunct particle comprising;

at least one alkali layer silicate, and

at least one water swellable component; and

b) 1 to 99.5 weight-% of at least one detergent component.

38. A composition comprising particles formed of at least one alkali layer silicate;

and at least one water swellable component.

39. The composition of claim 38, wherein said at least one alkali layer silicate is of the formula:

NaMSi_xO_2x+1 x yH₂O,

wherein M represents sodium or hydrogen, x a number from 1.9 through 4, and y a number from 0 through 20.

40. The composition of claim 39, wherein x is equal to 2,3, or 4.

41. The composition of claim 38, wherein said at least one alkali layer silicate is a sodium disilicate.

42. The composition of claim 38, wherein said sodium disilicate is crystalline layered sodium disilicate.

43. The composition of claim 42, wherein said crystalline layered sodium disilicate include the polymorphous phases alpha, beta, delta and epsilon.

44. The composition of claim 38, wherein said at least one water swellable component is selected from the group consisting of cellulosics, polycarboxylic acids and the salts thereof, and cross-linked polycarboxylic acids and the salts thereof.

45. The composition of claim 38, wherein said at least one water swellable component is a polycarboxylate.

46. The composition of claim 38, wherein said at least one water swellable component is a crosslinked copolymer of acrylic and maleic acid.