Pyridazine derivatives and its related compounds. Part 31. Synthesis of some disperse dyes derived from 3-amino-1H-pyrzolo(3,4-c]pyridazine and their color assessment on polyester fabrics

摘要

The 6-methyl-3, 4-diphenyl-7-(2-phenylhydrazono) pyrimido (1', 2':1, 5] pyrazolo (3,4-c] pyridazin-8(7H)-one and 3,4-diphenyl-7-(phenyldiazenyl)pyrimido(1',2':1,5]pyrazolo(3,4-c]pyridazine-6,8-diamine derivatives were applied to polyester fiber as disperse dyes. They were found to exhibit varying in hue from orange-yellow to orange-red, their absorption spectral characteristics, fastness properties and colour assessment are also reported.