Sulfo group-containing azo compounds having a tetrazo component radical derived from an optionally substituted 3,8-diaminodibenzofuran
US4058516A · kind A · utility
3Cited by
11References
44Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 20, 1974 |
| Grant date | Nov 15, 1977 |
| Priority date | — |
| Expiry date | Jun 20, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/09
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dyes of the formula ##STR1## AND SUBSTITUTED DERIVATIVES THEREOF, WHEREIN R is a coupling component radical, PA1 R.sub.1 is a coupling component radical, with the proviso that R and R.sub.1 are different, and PA1 N is 1 to 8, Are disclosed. They are useful for dyeing and printing natural and synthetic polyamides, cotton and other cellulosic fibers, polypropylene fibers modified by basic groups, synthetic polyamides and polyesters modified by acid groups, paper and leather. They exhibit good fastness to light, wet treatments and abrasion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.