Stabilization of particles containing quaternary ammonium bleach precursors
US4988451A · kind A · utility
20Cited by
11References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 14, 1989 |
| Grant date | Jan 29, 1991 |
| Priority date | — |
| Expiry date | Jun 14, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/3937
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A particulate additive is reported which is an intimately blended mixture of a precursor, a stabilizing agent and a dispersing agent. The precursor is a quaternized ammonium or phosphonium substituted carbonic acid ester. A C.sub.4 or higher organic acid having at least one carboxylic group, such a lauric acid, or a solid inorganic acid, such as potassium bisulfate, is required as the stabilizing agent. Various alkoxylated fatty alcohols, fatty acids or alkylated phenols are utilized as the dispersing agent. These particulate additives are employed as adjuncts in bleaching-detergent compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.