Types Of Direct Dyes
by : Rahul Sharma
Types Of Direct Dyes are as follows:
(1).Class A: Dyes that are self-levelling, i.e. dyes of good migration or leveling properties.
(2).Class B: Dyes that are not self-levelling, but which can be controlled by addition of salt to give level results; they are described as salt-controllable.
(3).Class C: Dyes that are not self-levelling and which are highly sensitive to salt, the exhaustion of these dyes cannot adequately be controlled by addition of salt alone and they require additional control by temperature; they are describe as temperature-controllable.
