Isoindoline colorants
US4719300A · kind A · utility
5Cited by
2References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 7, 1986 |
| Grant date | Jan 12, 1988 |
| Priority date | — |
| Expiry date | Jul 7, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/04
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The novel colorants of the formula (I) ##STR1## where the rings A, B and C independently of one another are unsubstituted or substituted by groups which impart insolubility, possess high color strength, very good fastness to migration and excellent lightfastness and weatherfastness and are therefore very useful for pigmenting plastics and surface coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.