Granular laundry detergent compositions containing stabilised percarbonate bleach particles
US5792738A · kind A · utility
19Cited by
9References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 16, 1996 |
| Grant date | Aug 11, 1998 |
| Priority date | — |
| Expiry date | Jan 16, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
There is provided a granular, silicate-built, phosphate free laundry detergent composition comprising fine alkali metal percarbonate particles having mean particle diameter below 450 .mu.m, preferably below 400 .mu.m, wherein no more than 20%, preferably no more than 10%, of the particles have a diameter above 710 .mu.m, said particles having a coating comprising one or more soluble inorganic salts. The salts may be selected from alkali or alkaline earth metal carbonates, sulphates, chlorides and nitrates. The coated percarbonate particles have improved stability to storage and are capable of dissolving quickly in wash liquor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.