摘要:
An improved process for preparing discharge prints on textile materials containing hydrophobic fibers wherein at least one disperse dyestuff dischargeable to white is applied to the textile material in the form of a dyeing liquor of print paste and also contacted by a pattern-applied discharge resist print paste, and then the material is heat treated at 100.degree. to 230.degree. C., wherein the improvement comprises said discharge resist print paste having, under the heat treatment conditions, a pH value of zero to 3.
摘要:
The present invention relates to the .beta. and .gamma. modifications of the dye of the formula (I) ##STR1## as well as to a process for their preparation and their use for dyeing and printing textile materials of polyester and/or cellulose esters or blended fabrics of these materials and wool or cellulose.
摘要:
Use of water-insoluble monoazo dyestuffs of the formula I ##STR1## wherein R.sup.1 denotes alkyl having 1 to 6 C atoms, cyclopentyl, cyclohexyl, fluorine, chlorine, bromine, alkoxy having 1 to 4 C atoms or trifluoromethyl,R.sup.2 denotes alkyl having 1 to 7 C atoms andR.sup.3 and R.sup.4 independently of one another denote alkyl having 1 to 4 C atoms,for the sublimation transfer process.
摘要:
Monoazo dyestuffs useful for dyeing and printing hydrophobic fibers have the formula ##STR1## in which R.sup.1 denotes alkyl having 1 to 3 carbon atoms, R.sup.2 and R.sup.3 independently of one another denote alkyl having 2 to 5 carbon atoms and R.sup.4 denotes methyl or ethyl.
摘要:
The .beta.-modification, which is stable under dyeing conditions, of the dyestuff of the formula ##STR1## is prepared by heating the .alpha.-modification, which is unstable under dyeing conditions, at temperatures of 60.degree. to 180.degree. C. and the .beta.-modification is useful in printing and dyeing fiber materials of cellulose esters, synthetic linear polyesters or mixed fabrics of the polyester fiber material with wool or viscose staple.
摘要:
Azo dyes of the formula ##STR1## wherein R.sup.1 is alkyl having 1 to 4 carbon atoms; R.sup.2 is alkyl having 1 to 3 carbon atoms; R.sup.3 is alkylcarbonyloxyethyl having 1 to 3 carbon atoms in the alkyl moiety, alkoxycarbonyloxyethyl having 1 to 4 carbon atoms in the alkoxy moiety, methoxyethoxycarbonyloxyethyl or ethoxyethoxycarbonyloxyethyl; and R.sup.4 is one of the definitions of R.sup.3 or cyanoethyl; or mixtures of at least two species of said formula are used for dyeing and printing hydrophobic fiber materials.
摘要:
An improved process for the preparation of azo dyestuffs of the formula ##STR1## comprising diazotizing a 2-halo-4-nitroaniline at 10.degree. to 35.degree. C. in 70 to 100 percent by weight strength acetic acid by means of nitrosylsulphuric acid, adjusting the acetic acid content of the resulting diazo solution to 60 to 85% by the addition of water, and at a temperature from 15.degree. to 45.degree. C. adding an appropriate carbazole to the diazo solution as a solid or in the form of a suspension in 60 to 100 percent strength by weight acetic acid and coupling the carbazole to the diazotized amine to produce said azo dyestuff and isolating the dyestuff.
摘要:
In a process known per se for the preparation of white patterns or patterns of various colors on a colored substrate on textile materials comprising hydrophobic synthetic fibres or on textile materials based on mixed fibres composed of polyester and cellulose comprising discharge printing wherein a discharge reserving agent based on an alkali or on sulphites, the improvement which comprises employing as the dischargeable disperse dyestuffs having the formula I ##STR1## in which R and K have the meanings given in claim 1.
摘要:
An improved process for preparing white or colored burn-out effects on textile materials containing hydrophobic fibers and cellulose fibers which process comprises applying to the material a dyeing liquor or printing paste containing at least one disperse dyestuff for dyeing the hydrophobic fibers alone or mixed with dyestuff for dyeing the cellulose fibers, applying a burn-out agent to the textile material in the form of a pattern, and then heat-treating the textile material at about 100.degree. to 240.degree. C. whereby the dyestuff is fixed and the burnout effect is produced, wherein the improvement comprises said dyeing liquor or print paste contains at least one disperse dyestuff which is discharged by the burn-out agent.