93136-86-8Relevant academic research and scientific papers
Synthesis of novel 1,2-diol containing azo dyes for polymeric substrates
Sheikh, Hamdullah Khadim,Kazmi, Mehdi Hassan
, p. 3496 - 3500 (2017/08/14)
Two novel 1,2-diol containing azo dyes have been synthesized for application on polymeric textile substrates. We used multistep synthesis scheme which involved selectively bonding azo chromophore with glycerol moiety such that only one alcohol out of the three gets bonded to the chromophore while rest two remain unchanged. The 1,2-diol moiety, common in both dyes, is responsible for forming hydrogen bonds with polar sites on a polymeric substrate. The molecular structure of the final molecule and synthesized intermediates were elucidated by UV/Vis, FT-IR, MS (EI, ESI, and CI) and 1H-NMR spectroscopic techniques. Dyes were applied to polyester and nylon 66 fabrics as disperse dyes by exhaust dyeing method and furnished good to excellent fastness properties on both of them.
SYNTHESIS OF ACETAL COMPOUNDS USING ZWITTERIONIC CATALYSTS
-
Paragraph 0109, (2015/05/19)
A process for the preparation of optionally asymmetric acetal compounds, comprising reacting a compound containing a hydroxyl group with a vinylether compound in the presence of a zwitterionic catalyst including at least one basic nitrogen containing structural fragment and at least one sulfonic acid group in its structure, with the proviso that the basic nitrogen on sulfonic acid molar ratio is 1 over 1.
