摘要:
A leuco polymer comprising a polyethylenimine and at least one leuco moiety covalently bound to the polyethylenimine, wherein the polyethylenimine comprises three or more amine nitrogen atoms and 1 mol. % or more of amine hydrogen atoms in the polyethylenimine are replaced with a moiety selected from the group consisting of 2-hydroxypropyl, 1-hydroxypropane-2-yl, and polyalkoxy groups. Methods of making the leuco polymer, laundry care compositions comprising the leuco polymer and methods of treating textiles with such laundry care compositions.
摘要:
A process for producing a reproducible ring dyeing with sulfur dyes on fabrics consisting of cellulosic fibers and blend fabrics containing cellulosic fibers comprises the application of the sulfur dye vat to the fabric being followed by a step in which the sulfur vat dye is fixed and incipiently oxidized at a temperature of 80 to 160° C. and preferably at a temperature of 120 to 130° C. and a moisture content of 5% to 50%, and preferably 20% to 35%.
摘要:
Stable, pourable aqueous suspensions of solid particulate materials are provided, especially suspensions of sulfur dyes which are characterized a very low content of inorganic sulfides and inorganic polysulfides. The suspensions are produced using certain suspension stabilizing agents, particularly polysaccharides, such as xanthan gum, whose solutions in water are pseudoplastic. The suspensions may further comprise a non-sulfide reducing agent. An improved method is also provided for determining the the potential for such suspensions to release hydrogen sulfide upon being acidified at a given temperature, which method comprises acidifying a sample of the suspension to pH 2.9-3.7, capturing all of the hydrogen sulfide released during acidification in aqueous alkali and measuring the sulfide ion content of the aqueous alkali.
摘要:
Novel sulfur containing nitroamino benzene dyes of formula: ##STR1## and salts thereof wherein (a) R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of alkyl, hydroxyalkyl, polyhydroxyalky, aminoalkyl, monoalkylamioalkyl and dialkylaminoalkyl, wherein(b) n is 0, 1 or 2, and wherein(c) the group ##STR2## occupies a position that is meta or para to the group-NHR.sub.1 ; a process for synthesizing these compounds and their use as direct dyeing hair dyes are being disclosed.
摘要:
Dyeing and printing with sulfur dyestuffs involves dissolving the dyestuff by reduction. The dissolved reduced dyestuff is applied to the material to be dyed or printed and the dyestuff is reconverted into in soluble dyestuff by oxidation. The present invention improves the prior art by using as the dyestuff reducing agent a compound of the formula ##STR1## or an alkali metal salt thereof, wherein R is --H or --OH and R' is --H, --CH.sub.3 or --CH.sub.2 OH.