DYWELL,sodium salt of polymerized naphthalene sulfonate formaldehyde condensate,is a highly effective anionic dispersant for dyestuffs and pigments.DYWELL shows low foaming property.Good heat stability,and high resistance to acid and alkali.DYWELL,used for dispersant of disperse dyes,and also dispersant and leveling agent of various dyes, performs excellent dyeing capability.DYWELL is good for improving wettability as...