Method for preparing a composition comprising coloured silicate mineral particles and a composition comprising coloured silicate mineral particles
US9540517B2 · kind B2 · utility
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Key dates
| Filing date | Sep 20, 2013 |
| Grant date | Jan 10, 2017 |
| Priority date | — |
| Expiry date | Sep 20, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2002/78
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for preparing a composition including silicate mineral particles that have coloring properties in which a talcose composition, including phyllosilicate mineral particles chosen from the group formed: from the particles having the chemical formula: ((SixGe1-x)4 M3O10 (OH)2, the particles having at least one interlayer space and having the chemical formula: (SixGe1-x)4 M3-ε O10 (OH)2, (M′m+)ε′.nH2O: -M having the formula Mgy(1)Coy(2)Zny(3)Cuy(4)Mny(5) Fey(6)Niy(7)Cry(8); -M′m+ designating at least one interlayer cation, the silicate mineral particles having a thickness of less than 100 nm and of which the largest dimension is less than 10 μπι, is brought into contact with a dye solution, including dye cations, of at least one element chosen from the transition metals, the lanthanides and the actinides. The composition obtained by this method is also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.