Method for dispersing pigment in solvent
US8663381B2 · kind B2 · utility
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4References
12Claims
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Key dates
| Filing date | Jul 18, 2008 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | Jun 27, 2031 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/016
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A pigment is dispersed in a solvent by mixing the pigment nanoparticles with clay in a layered or platelet form and mixing the resultant mixture with the solvent. The method is based on geometric inhomogeneity and mutually exclusive aggregation. The layered or platelet clay having a high aspect ratio is provided to hinder aggregation of the pigment nanoparticles. The pigment nanoparticles can be stably dispersed in a matrix containing an organic solvent and water without aggregation again.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.