Nylon staining inhibitor for dyeing of nylon/cellulose blends
Neoleve NYC-D (direct dyes, neutral fixation type reactive dyes) and NYC-R (reactive dyes)
In dyeing method (3), Neoleve NYC-R can facilitate superior deep dyeing
This is two-bath dyeing of nylon/cotton blend with acid/reactive dyestuff. Neoleve NYC-R is an anti-nylon-staining agent most suitable for this procedure.
In order to attain high colorfastness in this dyeing method, reactive dyestuff is used for the cellulose side, and acid dyestuff with high fastness for the nylon side.
As reactive dyes are for the alkali side and acid dyes for the acid side, normally, one-bath dyeing is not possible.
Dyeing of cellulose is carried out first, then follows soaping in a boiling bath before dyeing the nylon side.
If the cellulose side is dyed after the nylon side, acid dye fixed to nylon can easily be washed off during soaping in a boiling bath after cellulose dyeing.
In cases of using vinylsulfone-based reactive dyestuff, careful selection is required since the degree of staining varies depending on the type of dye.
Hot type reactive dyestuff is convenient as it causes comparatively less staining.
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