Dicarboxylic acid ester diazo pigments
US4070353A · kind A · utility
4Cited by
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7Claims
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Assignee
Inventors
Key dates
| Filing date | Feb 4, 1976 |
| Grant date | Jan 24, 1978 |
| Priority date | — |
| Expiry date | Feb 4, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B33/153
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Diazo pigments of the formula ##STR1## wherein R denotes an alkyl, cycloalkyl, aralkyl, aryl or heterocyclic radical, X denotes a hydrogen or halogen atom, an alkyl or alkoxy group containing 1 to 4 carbon atoms, or a nitro, cyano, trifluoromethyl or carboxylic acid ester group, and Y denotes a hydrogen or halogen atom, an alkyl or alkoxy group containing 1 to 4 carbon atoms or a nitro, cyano, trifluoromethyl or carboxylic acid ester group, are useful for coloring plastics and printing inks in fast yellow to orange shades.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.