𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Preparation and application of some new sulphur dyes

✍ 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.

✦ Synopsis


Abstract

A new series of sulphur dyes was prepared by fusion of aminoquinones and aryl‐azo 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.


πŸ“œ SIMILAR VOLUMES


Synthesis and Application of Some Azo an
✍ Hala F. RIZK; Mohamed A. El-BORAI; Gad B. El-HEFNAWY; Hatem F. El-SAYED πŸ“‚ Article πŸ“… 2009 πŸ› John Wiley and Sons 🌐 English βš– 83 KB πŸ‘ 2 views

## Abstract 3‐Amino‐1‐phenyl‐4,5‐dihydro‐1__H__‐pyrazol‐5‐one (**1**) was used as starting material for the synthesis of a number of azo compounds **3a–3c** and azomethine derivative **4**. The deblocking of **3a**–**3c** and **4** gave rise to **5a**–**5c** and **6** in which a free amino was reve

Polycondensation Dyes. A New Principle f
✍ Dr.-Ing. K. Schimmelschmidt; Dr. Hermann Hoffmann; Dr. E. Baier πŸ“‚ Article πŸ“… 1963 πŸ› John Wiley and Sons 🌐 English βš– 210 KB πŸ‘ 2 views

## Abstract Dyes which contain only thiosulfate residues as water‐solubilizing groups are readily polycondensed on cellulose under mild conditions in the presence of condensing agents such as sodium sulfide to give insoluble, high molecular‐weight dyes. This type of fixation leads to wash‐fast dyei