Bleach-containing laundry detergents or cleaning compositions comprising water-soluble builder system and soil release-capable cellulose derivative

• US 20060035801A1
• Filed: 08/10/2005
• Published: 02/16/2006
• Est. Priority Date: 02/10/2003
• Status: Active Grant

• Current Assignee: Henkel AG & Co KGaA
• Original Assignee: Henkel AG & Co KGaA
• Inventors: Penninger, Josef
• Granted Patent: US 7,375,072 B2
• Time in Patent Office: Days
• US Class Current: 510/352
• CPC Class Codes: C11D 17/0039 Coated compositions or coated components in the compositions, (micro)capsules
• CPC Class Codes: C11D 3/0026 Low foaming or foam regulating compositions
• CPC Class Codes: C11D 3/0036 Soil deposition preventing compositions; Antiredeposition agents
• CPC Class Codes: C11D 3/225 etherified, e.g. CMC
• CPC Class Codes: C11D 3/3942 Inorganic per-compounds C11D3/3902 takes precedence
• CPC Class Codes: D06M 15/09 Cellulose ethers
• CPC Class Codes: D06M 2200/00 Functionality of the treatment composition and/or properties imparted to the textile material

Abstract

A builder-containing laundry detergent or cleaning composition is comprised of: (1) alkali metal percarbonate; (2) a water-soluble builder block which comprised of: a) from 5% by weight to 35% by weight of citric acid, an alkali metal citrate, an alkali metal carbonate, and/or an alkali metal hydrogen carbonate, b) up to 10% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5, c) up to 2% by weight of phosphonic acid and/or alkali metal phosphate, d) up to 50% by weight of alkali metal phosphate, and e) up to 10% by weight of polymeric polycarboxylate, wherein at least two of components b), c), d) and e) are present in amounts greater than 0% by weight, and (3) a soil release-capable alkyl or hydroxyalkyl cellulose derivative. The soil release-capable action of cellulose derivatives is particularly marked when they are used in laundry detergents or cleaning compositions which comprise alkali metal percarbonates and contain only water-soluble builders.

Claims

1. A builder-containing laundry detergent or cleaning composition comprising:

(1) alkali metal percarbonate;

(2) a water-soluble builder block which comprised of;

a) from 5% by weight to 35% by weight of citric acid, an alkali metal citrate, an alkali metal carbonate, and/or an alkali metal hydrogen carbonate,

b) up to 10% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5,

c) up to 2% by weight of phosphonic acid and/or alkali metal phosphate,

d) up to 50% by weight of alkali metal phosphate, and

e) up to 10% by weight of polymeric polycarboxylate,

wherein at least two of components b), c), d) and e) are present in amounts greater than 0% by weight, and (3) a soil release-capable alkyl or hydroxyalkyl cellulose derivative.

2. The composition of claim 1 wherein the alkyl group of the cellulose derivative is a C₁ to C₁₀ alkyl group or a C₂ to C₁₀ hydroxyalkyl group.

3. The composition of claim 2 wherein the alkyl group is a C₁ to C₃ alkyl group or a C₂ to C₃ hydroxyalkyl group.

4. The composition of claim 3 wherein the alkyl group is a C₁ to C₃ alkyl group or a C₂ to C₃ hydroxyalkyl group.

5. The composition of claim 1 wherein the cellulose derivative is comprised of an average of 0.5 to 2.5 alkyl groups and the hydroxyalkyl group is comprised of an average of 0.02 to 0.3 hydroxyalkyl groups per anhydroglycose monomer unit.

6. The composition of claim 5 wherein the cellulose derivative is comprised of an average of 1 to 2 alkyl groups and the hydroxyalkyl group is comprised of an average of 0.05 to 0.3 hydroxyalkyl groups.

7. The composition of claim 1 wherein the mean molar mass of the cellulose derivative is from 10 000 D to 150 000 D.

8. The composition of claim 7 wherein the mean molar mass of the cellulose derivative is from 40 000 D to 120 000 D.

9. The composition of claim 8 wherein the mean molar mass of the cellulose derivative is from 80 000 D to 110 000 D.

10. The composition of claim 1 comprising from 0.1% by weight to 5% by weight of the cellulose derivative.

11. The composition of claim 10 comprising from 0.5% by weight to 2.5% by weight of the cellulose derivative.

12. The composition of claim 1 wherein the amount of alkali metal percarbonate is from 6% by weight to 30% by weight.

13. The composition of claim 12 wherein the amount of alkali metal percarbonate is from 10% by weight to 25% by weight.

14. The composition of claim 1 wherein the alkali metal percarbonate is particulate and has at least two coating layers, an innermost layer comprising at least one hydrate-forming inorganic salt and an outer layer comprising an alkali metal silicate.

15. The composition of claim 1 further comprising a compound which releases an organic percarboxylic acid under perhydrolysis conditions and/or comprises an organic percarboxylic acid, in particular in an amount of from 0.5% by weight to 6% by weight.

16. The composition of claim 1 wherein the amount of the builder block is at least 15% by weight.

17. The composition of claim 1 wherein the amount of the builder block is up to 55% by weight.

18. The composition of claim 1 wherein the amount of the builder block is from 25% by weight to 50% by weight.

19. The composition of claim 1 wherein component a) is comprised of from 15% by weight to 25% by weight of an alkali metal hydrogen carbonate and up to 5% by weight of citric acid and/or alkali metal citrate.

20. The composition of claim 18 wherein the amount of citric acid and/or alkali metal citrate is from 0.5% by weight to 2.5% by weight.

21. The composition of claim 1 wherein component a) is comprised of from 5% by weight to 25% by weight of citric acid and/or alkali metal citrate, and up to 5% by weight of an alkali metal carbonate or an alkali metal hydrogen carbonate or a combination of thereof.

22. The composition of claim 20 wherein the amount of an alkali metal carbonate or an alkali metal hydrogen carbonate or a combination of thereof is from 1% by weight to 5% by weight.

23. The composition of claim 1 wherein component a) comprises an alkali metal carbonate and alkali metal hydrogen carbonate in a weight ratio of from 10:

1 to 1;

1.

24. The composition of claim 1 wherein component b) is comprised of from 1% by weight to 5% by weight of alkalimetal silicate having a modulus in the range from 1.8 to 2.5.

25. The composition of claim 1 wherein component c) is comprised of from 0.05% by weight to 1% by weight of phosphonic acid and/or alkali metal phosphonate.

26. The composition of claim 24 wherein component c) is a hydroxyalkylphosphonic and/or aminoalkylphosphonic acid and/or the alkali metal salts thereof.

27. The composition of claim 1 wherein component d) is comprised of from 15% by weight to 35% by weight of an alkali metal phosphate.

28. The composition of claim 23 wherein alkali metal phosphate is trisodium polyphosphate.

29. The composition of claim 1 wherein component e) is comprised of from 1.5% by weight to 5% by weight of polymeric polycarboxylate.

30. The composition of claim 25 wherein the polymeric polycarboxylate is a homo or copolymer of acrylic acid, methacrylic acid and/or maleic acid.

33. The process of claim 28 wherein the particle which comprises the soil release-capable cellulose derivative is prepared by spray-drying.

34. The process of claim 28 wherein the particle which comprises the soil release-capable cellulose derivative is prepared by using a compacting compounding step.

31. A method of cleaning a textile material comprising contacting a textile material which is comprised at least partially of cotton with a builder-containing laundry detergent or cleaning composition comprising:

(1) alkali metal percarbonate;

(2) a water-soluble builder block which comprised of;

a) from 5% by weight to 35% by weight of citric acid, an alkali metal citrate, an alkali metal carbonate, and/or an alkali metal hydrogen carbonate,

b) up to 10% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5,

c) up to 2% by weight of phosphonic acid and/or alkali metal phosphate,

d) up to 50% by weight of alkali metal phosphate, and

e) up to 10% by weight of polymeric polycarboxylate,

wherein at least two of components b), c), d) and e) are present in amounts greater than 0% by weight, and (3) a soil release-capable alkyl or hydroxyalkyl cellulose derivative.

32. A process for producing a solid laundry detergent composition comprising mixing a composition comprised of particles of a soil release-capable alkyl or hydroxyalkyl cellulose derivative and a water-soluble builder block which is comprised of:

a) from 5% by weight to 35% by weight of citric acid, an alkali metal citrate, an alkali metal carbonate, and/or an alkali metal hydrogen carbonate,

b) up to 5% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5,

c) up to 2% by weight of phosphonic acid and/or alkali metal phosphate,

d) up to 50% by weight of alkali metal phosphate, and

e) up to 10% by weight of polymeric polycarboxylate,

wherein at least two of components b), c), d) and e) are present in amounts greater than 0% by weight and a laundry detergent in particulate form.