Detergents or cleaning agents comprising a water-soluble building block system and a cellulose derivative with dirt dissolving properties

• US 7,316,995 B2
• Filed: 08/10/2005
• Issued: 01/08/2008
• Est. Priority Date: 02/10/2003
• Status: Expired due to Fees

• Current Assignee: Henkel AG & Co KGaA
• Original Assignee: Henkel KGaA (Henkel AG & Co KGaA)
• Inventors: Penninger, Josef
• Primary Examiner(s): BOYER, CHARLES I
• Application Number:
  US11/200,678
• Publication Number:
  US 20060030504A1
• Time in Patent Office: 881 Days
• Field of Search: 510/276, 510/299, 510/318, 510/359, 510/361, 510/398, 510/400, 510/443, 510/453, 510/436, 510/460, 510/478, 510/477, 510/509, 510/510, 510/511, 510/512, 510/531, 510/534
• US Class Current: 510/478
• CPC Class Codes: C11D 11/00 Special methods for preparing compositions containing mixtures of detergents
• CPC Class Codes: C11D 17/0039 Coated compositions or coated components in the compositions, (micro)capsules
• CPC Class Codes: C11D 2111/12 Soft surfaces, e.g. textile
• 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 comprising: (1) 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 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 (2) 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 only water-soluble builders.

Claims

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

(1) a water-soluble builder comprising;

a) from 5% by weight to 35% by weight of either citric acid or an alkali metal citrate in combination with a carbonate mixture comprising an alkali metal carbonate and an alkali metal hydrogen carbonate;

b) from 1% to 5% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5;

c) from 0.05% to 1% by weight of phosphonic acid and/or alkali metal phosphonate;

d) from 15% to 35% by weight of alkali metal phosphate;

e) from 1.5% to 5% by weight of polymeric polycarboxylate; and

(2) a soil release-capable cellulose derivative composition comprising a C₁ to C₃ alkyl cellulose derivative and a C₂ to C₁₀ hydroxyalkyl cellulose derivative.

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

3. The composition of claim 2 wherein the mean molar mass of the cellulose derivative is from 40 000 D to 120 000 D.

4. The composition of claim 3 wherein the mean molar mass of the cellulose derivative is from 80 000 D to 110 000 D.

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

6. The composition of claim 5 comprising from 0.5% by weight to 2.5% by weight of the cellulose derivative.

7. The composition of claim 1 wherein the amount of the builder is at least 25% by weight.

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

9. The composition of claim 1 wherein the amount of the builder is from 55% by weight to 50% by weight.

10. 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 from 0.05% to 5% by weight of citric acid and/or alkali metal citrate.

11. The composition of claim 10 wherein the amount of citric acid and/or alkali metal citrate is from 0.5% by weight to 2.5% by weight.

12. 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 from 1% to 5% by weight of an alkali metal carbonate and an alkali metal hydrogen carbonate mixture.

13. 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.

14. The composition of claim 1 wherein component c) is a hydroxyalkylphosphonic and/or aminoalkylphosphonic acid and/or the alkali metal salts thereof.

15. The composition of claim 1 wherein alkali metal phosphate is trisodium polyphosphate.

16. The composition of claim 1 wherein the polymeric polycarboxylate is a homo or copolymer of acrylic acid, methacrylic acid and/or maleic acid.

17. A method of cleaning a textile material comprising contacting a textile material with a laundry detergent according to claim 1.

18. A process for producing a solid laundry detergent composition comprising mixing a composition comprised of:

(1) particles of a soil release-capable cellulose derivative composition comprising a C₁ to C₃ alkyl cellulose derivative and a C₂ to C₁₀ hydroxyalkyl cellulose derivative;

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

a) from 5% by weight to 35% by weight of either citric acid or an alkali metal citrate in combination with a carbonate mixture comprising an alkali metal carbonate and an alkali metal hydrogen carbonate;

b) from 1% to 5% by weight of alkali metal silicate having a modulus in the range from 1.8 to 2.5;

c) from 0.05% to 1% by weight of phosphonic acid and/or alkali metal phosphonate;

d) from 15% to 35% by weight of alkali metal phosphate;

e) from 1.5% to 5% by weight of polymeric polycarboxylate; and

(3) a laundry detergent in particulate form.

19. The process of claim 18 wherein the particle which comprises the soil release-capable cellulose derivative is prepared by spray-drying.

20. The process of claim 18 wherein the particle which comprises the soil release-capable cellulose derivative is prepared by using a compacting compounding step.