Thickened aqueous abrasive cleanser with improved rinsability
US5470499A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 1993 |
| Grant date | Nov 28, 1995 |
| Priority date | — |
| Expiry date | Sep 23, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3956
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention is a hard surface abrasive scouring cleanser having no significant syneresis, undue viscosity or yield stress increase, stably suspends abrasives, and has excellent rinsing characteristics. Furthermore, the present invention provides a stably suspended abrasive scouring cleanser which uses relatively small amounts of surfactants, thus lowering the total cost of producing these cleansers. The lesser amount of surfactant also affords the cleanser a milder feel and lower unaesthetic surfactant odor, while also requiring lower levels of fragrance. The absence of solvents results in a less irritating product as well. In one aspect the invention comprises, in aqueous solution: PA0 (a) a cross-linked polyacrylate; PA0 (b) at least one nonionic surfactant; PA0 (c) a pH adjusting agent; and PA0 (d) a calcium carbonate abrasive. In a further aspect the invention comprises, in aqueous solution: PA0 (a) a cross-linked polyacrylate thickener; PA0 (b) a mixed surfactant system which comprises one anionic surfactant and an amine oxide nonionic surfactant; PA0 (c) a pH adjusting agent; PA0 (d) a hydrotrope; and PA0 (e) a particulate abrasive.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.