摘要:
A process has been found for dyeing and printing pater, wood, plastic or metal, in which dyestuffs which, in the form of the free acid, correspond to the formula (I) ##STR1## wherein A denotes a phenol radical which is optionally substituted by alkyl or cycloalkyl andn represents 0 or 1,are employed.
摘要:
Stable aqueous solutions of anionic dyestuffs, preferably reactive dyestuffs, are obtained at very low costs by pressure permeation, if the feed solution for the pressure permeation is prepared by stirring the optionally dried presscake or the suspension of the crude dyestuff in an electrolyte solution.
摘要:
Process for the preparation of 1-aminobenzene-2-sulphonic acids of the formula ##STR1## wherein R.dbd.H or a substituent andn=1-4,and their salts, in particular their alkali metal salts, by oxidation of compounds of the formula ##STR2## wherein R.sub.1 .dbd.H, a cation, in particular an alkali metal cation, or a radical of the formula ##STR3## characterized in that the oxidation is carried out in a weakly acidic to alkaline pH range. The process can also be carried out as a one-pot process, using the corresponding benzothiazoles as starting materials.
摘要:
Use of mono-copper complexes of dyestuffs of the formula ##STR1## wherein X is H or SO.sub.3 H andR is H, C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, carboxyl, halogen or sulpho,and of mixtures thereof with the bis-copper complexes of (II) in amounts of up to 50% by weight, for dyeing natural and synthetic materials, in particular cellulose materials, leather, wool and polyamide.
摘要:
Preparations of water-soluble reactive dyestuffs containing pyridine derivatives of the formula ##STR1## or salts of, in which the substituents have the meanings given in the description, are highly suitable for the dyeing of cellulose materials.
摘要:
The invention provides new reaction dyestuffs of the formula ##STR1## where n and m are each 0 or 1 such that n+m=1 or 2 and whereG is a radical of the formula ##STR2## wherein B is a direct bond between D or D' and X or represents a bridge member as described in the specification,X is S, SO or SO.sub.2,Y is optionally substituted alkylene,R is H, optionally substituted C.sub.1 -C.sub.4 -alkyl or optionally substituted C.sub.2 -C.sub.4 -alkylene or optionally substituted phenylalkylene,Z is a fibre-reactive radical, and whereD and D' are as defined in the body of the Application.On hydroxyl- or amide-containing textile materials the new reactive dyestuffs produce prints and dyeings of a high fastness level.
摘要:
The new printing inks, comprising at least one dyestuff of the formula (I) ##STR1## are suitable for printing the most diverse carrier materials, in particular by means of an ink jet recording system.
摘要:
Fiber reactive azo dyestuffs of the formula ##STR1## in which R=H or C.sub.1 -C.sub.6 alkyl, which can be substituted with OH, Hal, SO.sub.3 H or OSO.sub.3 H;Z=heterocyclic five or six membered ring;n, m=0, 1 or 2, wherein n+m=0, 1 or 2;Y=OH, OR, NR.sub.2 R.sub.3, OMe; andR.sub.2, R.sub.3, =H, R and R.sub.2, R.sub.3 and N can form a heterocyclic 5 or 6-membered ring.
摘要翻译:其中R = H或可以被OH,Hal,SO 3 H或OSO 3 H取代的C 1 -C 6烷基的式“IMAGE”的纤维反应性偶氮染料; Z =杂环五或六元环; n,m = 0,1或2,其中n + m = 0,1或2; Y = OH,OR,NR 2 R 3,OMe; 并且R2,R3,= H,R和R2,R3和N可以形成杂环的5或6元环。
摘要:
By adding boric acid or salts of boric acid before or during the pressure permeation of anionic dyestuff solutions, the filtration flux is substantially increased, resulting in a low-cost process, due to the shorter plant time required.