Red monoazo sulphonic acid dyestuffs for polyamide
US4378970A · kind A · utility
2Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1981 |
| Grant date | Apr 5, 1983 |
| Priority date | — |
| Expiry date | Oct 15, 2001 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/928
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Red monoazo dyestuffs frm diazotised 1-aminobenzene-2-sulphonic acid-N-methyl-N-cyclohexylamide or 1-amino-4-,-5- or -6-methyl-benzene-2-sulphonic acid-N-methyl-N-cyclohexylamide and 2-amino-8-hydroxynaphthalene-6-sulphonic acid are disclosed which are particularly distinguished by their good migration and levelling properties and excellent fastness to light. Said dyestuffs are moreover suitable for obtaining very even combination dyeings together with known blue or yellow acid dyestuffs. These dyestuffs are particularly suited for the dyeing of carpeting, upholstery fabrics and drapery materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.