Pigments with improved dispersibility
US9175168B2 · kind B2 · utility
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6References
9Claims
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Key dates
| Filing date | Sep 14, 2007 |
| Grant date | Nov 3, 2015 |
| Priority date | — |
| Expiry date | Jul 19, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01P2004/64
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A method for preparing a pigment composition for a plastics colorant is disclosed. The pigment composition is prepared by mixing a press cake of the pigment with a liquid containing a selected type of dispersant before the resulting slurry is dried. Thus prepared pigment composition has improved dispersibility in a thermoplastic or thermoset resin and greatly reduces the filter pressure rise in the molding systems for preparing masterbatches or various plastic compositions for molding, fiber, film and sheet.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.