Particles containing alkali
US8455425B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 9, 2009 |
| Grant date | Jun 4, 2013 |
| Priority date | — |
| Expiry date | Jun 28, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D17/065
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to [1] alkali agent-containing particles which are free from deterioration of dissolvability in water and excellent in anti-caking property and which include (a) particles containing an alkali agent and having an average particle size of from 150 to 1000 μm, and a layer of (b) clay mineral particles exhibiting a water impregnation capacity of 200% by mass or more and having an average particle size of from 1 to 200 μm, the layer being formed on a surface of the respective particles (a); and [2] a method for suppressing caking of the alkali agent-containing particles including the step of forming a layer of the clay mineral particles (b) on a surface of the respective particles (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.