Unit dose cleaning product

• US 20020187909A1
• Filed: 02/26/2002
• Published: 12/12/2002
• Est. Priority Date: 02/28/2001
• Status: Abandoned Application

• Current Assignee: Unilever Home & Personal Care Usa Division Of Conopco, Inc.
• Original Assignee: Unilever Home & Personal Care Usa Division Of Conopco, Inc.
• Inventors: Gupta, Neeraj, Veerman, Simon Marinus, Hage, Ronald
• Application Number:
  US10/084,809
• Publication Number:
  US 20020187909A1
• Time in Patent Office: Days
• US Class Current: 510/295
• CPC Class Codes: C11D 17/0004 Non aqueous liquid compositions comprising insoluble particles
• CPC Class Codes: C11D 17/043 Liquid or thixotropic (gel) compositions
• CPC Class Codes: C11D 3/3932 Inorganic compounds or complexes
• CPC Class Codes: C11D 3/3935 granulated, coated or protected

Abstract

A unit dose cleaning product comprising a capsule formed of a material capable of dissolving, disintegrating or dispersing in a wash liquor, the capsule being filled with a substantially non-aqueous liquid cleaning composition in an amount sufficient to clean a single wash load, said composition including an organic substance with forms of a complex with a transition metal, the complex being capable of catalysing bleaching of a substrate by atmospheric oxygen.

Claims

1. A unit dose cleaning product comprising a capsule formed of a material capable of dissolving, disintegrating or dispersing in a wash liquor, the capsule being filled with a substantially non-aqueous liquid cleaning composition in an amount sufficient to clean a single wash load, said composition including an organic substance with forms of a complex with a transition metal, the complex being capable of catalysing bleaching of a substrate by atmospheric oxygen.

2. The unit dose product of claim 1, wherein the organic substance comprises a pentadentate ligand of the general formula (B):

3. The unit dose product of claim 2, wherein the ligand is N,N-bis(pyridin-2-yl-methyl)-1,1-bis(pyridin-2-yl)-1-aminoethane.

4. The unit dose product of claim 1, wherein the substantially non-aqueous liquid cleaning composition comprises from 0.005% to 1%, preferably from 0.0075% to 0.5%, more preferably from 0.01% to 0.1% by weight of the composition of total of the organic substance.

5. The unit dose product of claim 1, wherein the amount of the substantially non-aqueous liquid cleaning composition within the capsule is from 10 ml to 100 ml, preferably from 12.5 ml to 75 ml, more preferably from 15 ml to 60 ml, especially from 20 ml to 55 ml.

6. The unit dose product of claim 1, wherein substantially non-aqueous liquid cleaning composition within the capsule comprises from 0.001 g to 0.5 g, preferably from 0.002 g to 0.3 g, more preferably from 0.0025 g to 0.25 g by weight of total of the organic substance.

7. The unit dose product of claim 1, wherein the substantially non-aqueous liquid cleaning composition further comprises a surfactant.

8. The unit dose product of claim 1, wherein the substantially non-aqueous liquid cleaning composition further comprises a builder.

9. The unit dose product of claim 1, wherein the organic substance comprises a preformed complex of a ligand and a transition metal.

10. The unit dose product of claim 1, wherein the organic substance comprises a free ligand for complexing with a transition metal present in the water and/or present in the substrate.

11. The unit dose product of claim 1, wherein the organic substance comprises a composition of a free ligand or a transition metal-substitutable metal-ligand complex, and a source of transition metal.

12. A method of cleaning a substrate comprising bringing into contact, a wash liquor in which it immersed, the substrate and a unit dose cleaning product comprising a capsule formed of a material capable of dissolving, disintegrating or dispersing in a wash liquor, the capsule being filled with a substantially non-aqueous liquid cleaning composition in an amount sufficient to clean a single wash load, said composition including an organic substance with forms of a complex with a transition metal, the complex being capable of catalysing bleaching of a substrate by atmospheric oxygen.