Cleansing compositions containing stable silver

Patent metadata

Field	Value
Publication number	US-9752106-B2
Application number	US-201515114092-A
Country	US
Kind code	B2
Filing date	Jan 6, 2015
Priority date	Jan 29, 2014
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Disclosed is a cleansing composition having pH of at least 9, said composition comprising: (i) 20 to 85 wt % anionic surfactant; and, (ii) a silver(I) compound having silver ion solubility (in water at 25° C.) of at least 1×10 −4 mol/L, at a level equivalent to silver content of 0.01 to 100 ppm, wherein the free alkali content of said composition is less than 0.01%. The composition is a robust and improved cleansing composition with a stable colour.

First claim

The invention claimed is:

1. A cleansing composition having pH of at least 9 , said composition comprising:
(i) 20 to 85 wt % anionic surfactant; and,
(ii) a silver(I) compound having silver ion solubility (in water at 25° C.) of at least 1×10 −4 mol/L, at a level equivalent to silver content of 0.01 to 100ppm, wherein the free alkali content of said composition is less than 0.01% and wherein said silver compound is selected from the group consisting of silver oxide, silver nitrate, silver acetate, silver sulfate, silver benzoate, silver salicylate, silver carbonate, silver citrate or silver phosphate.

2. A cleansing composition as claimed in claim 1 comprising 0.01 wt % to 10 wt % free fatty acid.

3. A cleansing composition as claimed in claim 1 comprising said silver(I) compound at a level equivalent to silver content of 1 to 50 ppm.

4. A cleansing composition as claimed in claim 1 wherein said silver compound is silver oxide, silver sulfate or silver citrate.

5. A cleansing composition as claimed in claim 1 wherein said anionic surfactant is soap of C8 to C22 fatty acids.

6. A composition as claimed in claim 1 further comprising a carrier selected from talc, glycerin or triethylamine for the silver(I) compound.

Assignees

• Conopco Inc

Inventors

• Agarkhed Ajit Manohar
• Kumar Nitish

Classifications

• C11D3/168

  Organometallic compounds or orgometallic complexes · CPC title

• C11D3/1213

  Oxides or hydroxides, e.g. Al2O3, TiO2, CaO or Ca(OH)2 · CPC title

• C11D1/02

  Anionic compounds {(C11D1/002, C11D1/004, C11D1/008 take precedence)} · CPC title

• C11D3/22

  Carbohydrates or derivatives thereof · CPC title

• C11D3/1226

  Phosphorus containing · CPC title