Год выпуска: 2012 Автор: Hitendra Patel Издательство: LAP Lambert Academic Publishing Страниц: 108 ISBN: 9783847345848
Описание
Azo dyes are the most important class of dyes, comprising over 50 % of total dyestuff's production. In the early days, with the discovery of Mauve by Sir W.H. Perkins in 1856, colorants have made significant differences in one’s life and have become a part of human sensation. Consequently research on synthetic dyes was pursued by various chemists and scientists and has evolved sound basics for the foundation of the colorants industry. As a result in the last 125 years synthetic dyes have been prepared in bewildering number and variety. However, the recent developments has appeared in the literature [1,2] pursuing the several couplers designed to give disperse azo dyes suitable for polyester and cotton fibers and several patents documented for the applications of different coupling components in the synthesis of azo dyes [3,4]. Perusal of literature indicates the azo dyes based on derivatives of hydroxybenzophenone useful as U.V. absorber [5]. This has prompted to undertake the...
