Thickened aqueous abrasive cleanser with improved colloidal stability
US5346641A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1993 |
| Grant date | Sep 13, 1994 |
| Priority date | — |
| Expiry date | Aug 20, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D1/75
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A thickened aqueous abrasive scouring cleanser containing bleach which is capable of stably suspending abrasives, has excellent bleach half-life stability, little or no syneresis and maintains these advantages over extended times and at elevated temperatures and comprises, in aqueous solution: PA0 (a) a colloidal aluminum oxide thickener having average particle size of no greater than about one micron; PA0 (b) at least one surfactant which can, in association with the aluminum oxide, provide proper rheology and cleaning; PA0 (c) an electrolyte/buffer to promote the environment in which the aluminum oxide and surfactant can associate to provide proper rheology; PA0 (d) a halogen bleach; PA0 (e) a particulate abrasive having average particle size of about 40 to 800 microns to provide scouring action; and PA0 (f) a viscosity stabilizing amount of a multivalent metal salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.