Surface modified pigment compositions
US4844742A · kind A · utility
21Cited by
17References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 15, 1987 |
| Grant date | Jul 4, 1989 |
| Priority date | — |
| Expiry date | May 15, 2007 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B67/0036
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Surface modification of a variety of pigments, particularly quinacridone pigments, and the pigments resulting therefrom whereby the pigment is treated with a solvent-free, basic, nitrogen-containing copolymer of the polyurethane series and with a dispersion-improving derivative of the primary pigment resulting in compositions exhibiting enhanced performance in automative and other finish systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.