Disazo pigments containing at least one nitro group on the diazo component
US3978038A · kind A · utility
5Cited by
8References
2Claims
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Inventors
Key dates
| Filing date | Feb 27, 1974 |
| Grant date | Aug 31, 1976 |
| Priority date | — |
| Expiry date | Feb 27, 1994 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
New disazo pigments of the formula ##SPC1## R being hydrogen, halogen, alkyl, alkoxy, nitrile, trifluormethyl, aryloxy, phenylsulfonyl or benzoyl, m and n 1 or 2, X hydrogen, halogen, alkyl, alkoxy, nitro, nitrile, trifluormethyl or carboxylic acid ester are prepared. The compounds are useful for pigmenting high molecular weight organic materials such as polyamides, polyurethanes and polyesters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.