Process for preparing coated alkali metal percarbonate, coated alkali metal percarbonate obtainable by this process, its use in detergent compositions, and detergent compositions containing it
US7371717B2 · kind B2 · utility
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10References
28Claims
0Family size
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Key dates
| Filing date | Feb 14, 2001 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Mar 3, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for preparing coated particulate alkali metal percarbonate in which coating is carried out by mixing percarbonate with a solid particulate coating and agent and optionally with an aqueous liquid, so that the amount of water present during mixing does not exceed 12% of the total weight of the mixture. Coated alkali metal percarbonate obtainable by this process and its use as active bleach in detergent compositions is also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.