RUNGACTIVE
HE dyes are suitable for dyeing cotton and other
cellulosic materials. These dyes possess significantly
higher exhaustion and fixation efficiency which
results in appreciable cost reduction in comparison
to conventional reactive dyes. The high fixation
and good build up are of particular importance
when dyeing polyester/cellulosic blends where
liquor to goods ratio is quite high. Due to higher
fixation of Rungactive HE dyes, the drained and
wash liquor after dyeing contain much less quantity
of unifixed dyes, in comparison to conventional
reactive dyes, which is of interest when pollution
control is major concern to everybody. This facilitates
quicker wash off and efficient soaping. The improved
stability of Rungactive HE dyes gives improved
batch to batch consistancy. Exhaustion of Rungactive
HE dyes can be controlled by salt addition and
temperature to give level dyeing before alkali
addition. |