Detergent Composition

• US 20110017239A1
• Filed: 08/20/2008
• Published: 01/27/2011
• Est. Priority Date: 08/20/2007
• Status: Abandoned Application

• Current Assignee: Reckitt Benckiser N.V. (Reckitt Benckiser Group PLC)
• Original Assignee: Reckitt Benckiser (Reckitt Benckiser Group PLC)
• Inventors: VanLoyen, Dietmar, Preuschen, Judith
• Application Number:
  US12/673,843
• Publication Number:
  US 20110017239A1
• Time in Patent Office: Days
• US Class Current: 134/25.2
• CPC Class Codes: C11D 17/0047 Detergents in the form of bars or tablets
• CPC Class Codes: C11D 17/0073 Tablets
• CPC Class Codes: C11D 3/3769 (Co)polymerised monomers containing nitrogen, e.g. carbonamides, nitriles or amines
• CPC Class Codes: C11D 3/378 (Co)polymerised monomers containing sulfur, e.g. sulfonate

Abstract

A shaped body of detergent composition comprising a chemically and/or physically cross-linked dissolution retarding agent, and at least one of a surfactant and/or builder. The dissolution retarding agent is preferably a copolymer of N-vinylpyrrolidone, 2-acrylamido-2-methylpropanesulfonic acid and a cross-linking agent, or a salt thereof. The shaped bodies dissolve predominantly in the main wash of an automatic washing process and do not dissolve significantly in the pre-wash and are of particular application in automatic dishwashing.

Claims

1. A shaped body of detergent composition comprising a chemically and/or physically cross-linked dissolution retarding agent, and at least one of a surfactant or builder wherein the dissolution retarding agent comprises a copolymer formed from the copolymerisation of acrylamidoalkylsulphonic acids with either;

a) at least one cyclic N-vinylcarboxamide, vinyl acetate, ethyleneimine, vinyl imidazole, acrylic acid or maleic acid, or

b) (i) at least one cyclic N-vinylcarboxamide, vinyl acetate, ethyleneimine, vinyl imidazole, acrylic acid or maleic acid and (ii) at least one linear N-vinylcarboxamide, or the alkali metal, alkaline earth metal, ammonium or transition metal salt thereof.

2. A shaped body according to claim 1, wherein the dissolution retarding agent comprises a cross-linked copolymer comprising;

a1) 1 to 50% by weight of either the repeating structural unit of formula [1];

3. A shaped body according to claim 2, wherein the dissolution retarding agent comprises a copolymer comprising;

a) from 3 to 15 wt % of the structural units of the formula (1), or (1) and (2),

b) from 84.5 to 96.5 wt % of structural units of the formula (3),

c) from 0.5 to 2 wt % of cross-linking structures resulting from monomers having at least two olefinic double bonds,

or the alkali, alkaline earth metal, ammonium or transition metal salts thereof.

4. A shaped body according claim 3, wherein the dissolution retarding agent comprises a copolymer comprising;

a) from 3 to 15 wt % of structural units derived from N-vinylpyrrolidone,

b) from 84.5 to 96.5 wt % of structural units derived from a salt of 2-acrylamido-2-methylpropanesulphonic acid, and

c) from 0.5 to 2 wt % of cross-linking structures resulting from monomers having at least two olefinic double bonds,

or the alkali, alkaline earth metal, ammonium or transition metal salts thereof.

5. A shaped body according to claim 2, wherein the cross-linking structure (c) is derived from monomers of the formula (4), in which R is hydrogen, methyl or ethyl;

6. A shaped body according to claim 2, wherein formula [1] is N-vinylpyrrolidone, formula [3] is 2-acrylamido-2-methylpropanesulphonic acid and formula [4] is trimethylolpropanetriacrylate.

7. A shaped body according to claim 1, wherein the dissolution retarding agent is a salt of sodium, potassium, ammonium, magnesium, calcium, manganese, zinc, bismuth or cobalt.

8. A shaped body according to claim 1, wherein the dissolution retarding agent is water-soluble or water-swellable.

9. A shaped body according to claim 1, wherein the composition comprises an amount of from 0.01-10% wt of the dissolution retarding agent.

10. A shaped body according to claim 1, wherein the builder comprises at least one of polycarboxylate builders, succinate builders, amino acid based builders and/or phosphorous based builders.

11. A shaped body according to claim 1, wherein the composition comprises an amount of from 5 to 80% wt of builder.

12. A shaped body according to claim 1, wherein the surfactant comprises a non-ionic surfactant, preferably in an amount of from 0.2 to 30% wt.

13. A shaped body according to claim 1, wherein a shaped body prepared by tabletting 9.5 g of the composition using a Kilian®

SP 300 excentric press applying a pressing force of 70 KN resulting in a tablet hardness of between 200 to 400 N has a dissolution time of from 300 to 650 seconds in 40°

C. water, tested using a Disintegration-Tester Erweka®

ZT 54 machine operating at 68 strokes per minute.

14. A shaped body according to claim 1, wherein the shaped body is produced by compaction of the detergent composition.

15. A shaped body according to claim 1, wherein the shaped body is a dishwashing composition.

16. A detergent delivery cartridge, the cartridge comprising a shaped body according to claim 1

17. A detergent delivery cartridge according to claim 16, wherein the delivery car Midge is a refill device having a plurality of chambers which retain said unit dose elements, the unit dose elements being separate from each other, the delivery cartridge being adapted for engagement in a housing, the housing being built into a dishwasher or independent of the dishwasher.

18. A detergent dispensing device comprising a shaped body according to claim 1.

19. A method of washing wares in an automatic washing machine, the method comprising the step of:

utilizing using a shaped body according to claim 1 in an automatic dishwashing machine.

20. A method of washing wares in an automatic dishwashing machine, comprising the step of:

utilizing a detergent cartridge according to claim 16 in an automatic dishwashing machine.