Sulphatoethylene (sulphonyl or sulphonylamino) phenyleneazo dyestuffs
US3998805A · kind A · utility
16Cited by
9References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 1974 |
| Grant date | Dec 21, 1976 |
| Priority date | — |
| Expiry date | Mar 28, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B62/45
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Dyestuffs of the formula ##STR1## wherein B is the radical of a coupling component of the dispersion series, which is derived from an N-alkylated aniline or aminonaphthalene, and which contains in the o-position with respect to the azo bridge a free or acylated primary or secondary amino group, and which is free from water-solubilizing groups, R is a hydrogen atom, a cycloalkyl group or an optionally substituted alkyl group. The new dyestuffs give yellow, red or orange shades on polyester fibers and can be applied from aqueous baths without addition of dispersing agents.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.