Hydroxyquinolyl- and quinazolonylazoacetoacetylbenzimidazolone pigments
US3963694A · kind A · utility
11Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 19, 1974 |
| Grant date | Jun 15, 1976 |
| Priority date | — |
| Expiry date | Aug 19, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Azo pigments of the formula ##EQU1## wherein A is a condensed ring system consisting of a benzene ring and a 5- or 6-membered hetero ring having nitrogen in the cyclus and a keto group, R is alkyl, cycloalkyl or aryl and Y is hydrogen, halogen, alkyl, cycloalkyl, alkoxy, aryl or nitro, and the azo group is not bonded directly to the hetero ring of the diazo component, are prepared. These pigments are useful for coloring organic material of high molecular weight, such as cellulose ethers and esters, and polyesters. Th pigments have excellent fastness to light and migration.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.