Process for producing granular bleach activator composition and granular bleach activator composition
US5458801A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 1992 |
| Grant date | Oct 17, 1995 |
| Priority date | — |
| Expiry date | Sep 25, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A granular bleach activator composition and a process for producing a granular bleach activator composition having excellent solubility and storability, which comprises using at least one member selected from the group consisting of substances (a), (b), (c) and (d) as a core particle and granulating the core particle and a powdery bleach activator in the presence of a water-soluble organic binder to give granules having a weight-average particle diameter of 100 to 3,000 .mu.m: PA1 (a) a water-soluble substance having a pH in a 3 wt. % aqueous solution thereof, of 2 to 10, PA1 (b) a borate-coated sodium percarbonate, the particle of which has an inner surface and/or an outer surface coated with the borate, PA1 (c) a borate-coated sodium perborate, the particle of which has an inner surface and/or an outer surface coated with the borate, and PA1 (d) sodium perborate other than the borate-coated sodium perborate (c).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.