Composition

• US 20100167976A1
• Filed: 10/12/2007
• Published: 07/01/2010
• Est. Priority Date: 10/14/2006
• Status: Abandoned Application

• Current Assignee: Reckitt Benckiser N.V. (Reckitt Benckiser Group PLC)
• Original Assignee: Reckitt Benckiser N.V. (Reckitt Benckiser Group PLC)
• Inventors: Pavan, Nassimo, Costiniti, Fabio
• Application Number:
  US12/444,612
• Publication Number:
  US 20100167976A1
• Time in Patent Office: Days
• US Class Current: 510/253
• CPC Class Codes: C02F 1/42 by ion-exchange ion-exchange in general B01J
• CPC Class Codes: C02F 2305/14 Additives which dissolves or releases substances when predefined environmental conditions are reached, e.g. pH or temperature
• CPC Class Codes: C02F 5/083 Mineral agents

Abstract

A solid zeolite free soluble water softening composition comprises an effervescent system including an organic acid and an alkali which react together upon dissolution in water.

Claims

1. A solid, zeolite free soluble water softening composition comprising an effervescent system including an organic acid and an alkali which react together upon dissolution in water.

2. A composition according to claim 1, wherein the acid is present in an amount of at least about 5%.

3. A composition according to claim 2, wherein the organic acid is selected from the group consisting of:

citric, phosphoric, sulphamic, acetic, formic, glycolic and oxalic acid.

4. A composition according to claim 1 wherein the alkali is present in an amount of at least about 10%.

5. A composition according to claim 1, wherein the composition has a pH of (at 1% solution) of 5.5. to 9.5.

9. A composition according to claim 2, wherein the alkali is present in an amount of at least about 10%.

10. A composition according to claim 3, wherein the alkali is present in an amount of at least about 10%.

11. A composition according to claim 2, wherein the composition has a pH of (at 1% solution) of 5.5. to 9.5.

12. A composition according to claim 3, wherein the composition has a pH of (at 1% solution) of 5.5. to 9.5.

13. A composition according to claim 4, wherein the composition has a pH of (at 1% solution) of 5.5. to 9.5.

6. A method of removing and preventing the deposit of limescale in a clothes washing machine comprising the step of:

providing a composition comprising a solid zeolite free soluble water softening composition which comprises an effervescent system including an organic acid and an alkali which react together upon dissolution in water to the clothes washing machine.

7. A method according to claim 6, wherein the composition additionally comprises a water-softening agent selected from an ion exchange agent, and ion capture agent or an anti-nucleating agent, or a mixture thereof.

8. A method according to claim 6, wherein the composition is added into the fabric softening dispensing drawer of a clothes washing machine.