| abstract |
Prepn. of disperse monoazo dyes of formula:- in which D is a diazo component, R is H or a possibly substd. hydrocarbon residue and Z a possibly substd. 2- or 4-pyridyl residue. Ring A can be substd. with non-solubilising gps. As dyes for castings, films, fibres, etc. of polyesters, polyamides, polyolefins, polyvinyl cpds. and polyacrylonitrile, also cellulose acetates. |