## Abstract 3βAminoβ1βphenylβ4,5βdihydroβ1__H__βpyrazolβ5βone (**1**) was used as starting material for the synthesis of a number of azo compounds **3aβ3c** and azomethine derivative **4**. The deblocking of **3a**β**3c** and **4** gave rise to **5a**β**5c** and **6** in which a free amino was reve
Preparation and application of some new sulphur dyes
β Scribed by Osman, A. M. ;Metwally, S. A. M.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 2007
- Tongue
- English
- Weight
- 250 KB
- Volume
- 24
- Category
- Article
- ISSN
- 0375-9210
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
A new series of sulphur dyes was prepared by fusion of aminoquinones and arylβazo compounds with sodium polysulphide. These dyes possessed all round good fastness properties and their tendering effects on cellulosic materials were estimated. The complex chemical nature of the prepared dyes was investigated and representative structural formulae were suggested.
π SIMILAR VOLUMES
## Abstract Dyes which contain only thiosulfate residues as waterβsolubilizing groups are readily polycondensed on cellulose under mild conditions in the presence of condensing agents such as sodium sulfide to give insoluble, high molecularβweight dyes. This type of fixation leads to washβfast dyei