Metal-free sulfo group-free basis disazo and trisazo compounds containing two different 6-hydroxypyrid-2-one coupling component radicals
US5037964A · kind A · utility
14Cited by
5References
19Claims
0Family size
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Key dates
| Filing date | Oct 17, 1986 |
| Grant date | Aug 6, 1991 |
| Priority date | — |
| Expiry date | Oct 17, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B44/08
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
(i) Metal-free compounds of the formula ##STR1## These compounds are useful as dyes for paper and textiles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.