Transiently water-soluble non-heterocyclic azo and disazo disperse dyestuffs
US3987026A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 25, 1973 |
| Grant date | Oct 19, 1976 |
| Priority date | — |
| Expiry date | Jul 25, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Transiently water-soluble dyestuffs of the formula ##EQU1## WHEREIN F is a radical of a non-heterocyclic azo disperse dyestuff containing no groups which dissociate in water, n is 1 or 2, X is an electrophilic group, R.sub.1 is an optionally substituted ethylene group, and R.sub.2 and R.sub.3 are alkyl radicals which are different from each other and which carry altogether at least one water-solubilizing group and optionally still further substituents which do not impart solubility in water and R.sub.3 can furthermore be a hydrogen atom. The dyestuffs can be dissolved in aqueous dyeing baths and dye polyester fibers in yellow, red and blue shades of good fastness.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.