| 摘要 |
A disperse dye of formula (1), in which R<1> is alkyl, cycloalkyl, aryl, alkenyl or aralkyl each of which may be optionally substituted; R<2> and R<3> each independently is optionally substituted alkyl; R<4> is -H, -OH or alkyl, alkoxy, - NHCOalkyl, -NHCOaryl, -NHSO2alkyl, -NHSO2aryl each of which may be optionally substituted; Z is a direct link, oxygen or -N-R<5> in which R<5> is -H, otpionally substituted alkyl or optionally substituted aryl; A is a group as defined in claim 1. The present hindered indoline dyes are useful for the coloration of textile materials, for use in coloured toners, in inks and as dyes for dye diffusion thermal transfer printing. |
