Percarbonate particles stabilized by coating with an aqueous solution containing a silicate and a boric acid
US5556834A · kind A · utility
6Cited by
6References
15Claims
0Family size
Assignee
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Key dates
| Filing date | Jun 21, 1995 |
| Grant date | Sep 17, 1996 |
| Priority date | — |
| Expiry date | Jun 21, 2015 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/0039
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for stabilizing percarbonate by coating by means of a coating agent according to which the percarbonate particles are treated with a concentrated aqueous solution containing at least one boron compound selected from meta and ortho boric acids and at least one silicate, following by removal of water to provide coated percarbonate particles. The solution is prepared by adding the boron compound to a solution of the silicate. The coated particles are useful in washing and bleaching compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.