Disperse dyes
US5939579A · kind A · utility
2Cited by
6References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 1998 |
| Grant date | Aug 17, 1999 |
| Priority date | — |
| Expiry date | Jul 6, 2018 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S8/922
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disperse dyes of formula wherein R is nitro or cyano, R.sub.1 is halogen, R.sub.2 is C.sub.1 -C.sub.4 alkyl which is unsubstituted or substituted by C.sub.1 -C.sub.3 alkoxy, halogen, cyano or phenyl, R.sub.3 is C.sub.1 -C.sub.4 alkyl, R.sub.4 is methyl or ethyl, R.sub.5 is hydrogen, methyl or ethyl, and R.sub.6 is methyl or ethyl, with the proviso that R.sub.5 is not hydrogen if R is nitro, R.sub.1 is halogen and R.sub.2 is C.sub.1 -C.sub.4 alkyl. These dyes are particularly suitable for dyeing and printing textile materials consisting of polyester fibres.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.