Disazo pigment from condensation of carboxylic acid chloride with 2,5-dichloro-1,4-phenylene diamine
US4689403A · kind A · utility
4Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 29, 1982 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Apr 29, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B43/38
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns the disazo pigment of the formula ##STR1## The new pigment is useful for coloring plastic material in pure red shades of high tinctorial strength and outstanding fastness to light and migration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.