摘要:
Compounds of the formula X.sup.1 --B.sup.1 --D.sup.1 --N.dbd.N--K.sup.1 --Y--K.sup.2 --N.dbd.N--D.sup.2 --B.sup.2 --X.sup.2 (1) are suitable as reactive dyestuffs for the dyeing or printing of substrates.
摘要:
Phthalocyanine reactive dyestuffs which, in the form of the free acid, have the formula (1) ##STR1## in which the variable radicals have the meaning given in the description, are prepared by condensation of the corresponding amines with cyanuric fluoride or cyanuric chloride in any desired order.The reactive dyestuffs according to the invention exhibit good wet and light fastness properties and are used for the dyeing and printing of cotton.
摘要:
A rotary chuck for axially clamping a tool includes a spindle terminus forming part of a rotary machine tool spindle; a clamping element holder immobilized in the central bore of the spindle terminus; and a plurality of clamping elements circumferentially evenly distributed about the holder. Each clamping element is a one-armed spreading lever having a first end pivotally supported in the holder to provide for a pivotal movement of each clamping element in a plane containing the spindle axis. Each clamping element has a second end having a radially outwardly swung clamping position in which each second end is adapted to be clamped against an inner shoulder of a hollow tool shank received in the spindle bore for axially pulling the tool into engagement with a frontal end face of the spindle terminus. Each second end has a radially inwardly swung releasing position in which the tool is released from the chuck. There is further provided a clamping drive extending coaxially with the spindle axis and being operatively coupled to the clamping elements. The clamping drive is axially movable in a first direction for displacing the clamping elements into the clamping position and in a second direction for displacing the clamping elements into the releasing position.
摘要:
Triphendioxazine dyestuffs of the formula ##STR1## having the substituent meanings specified in the descriptive part, are highly suitable for dyeing and printing hydroxyl- or amido-containing materials, in particular fibre materials, and produce wash-fast dyeings and prints.
摘要:
Dyestuffs of the formula ##STR1## wherein R=H or optionally substituted alkyl, in particular optionally substituted C.sub.1 -C.sub.4 -alkyl,R.sub.1 =H or substituent,T.sub.1, T.sub.2 =H, Cl, Br, optionally substituted C.sub.1 -C.sub.4 -alkyl, C.sub.1 -C.sub.4 -alkoxy, phenyl or phenoxy,Z=optionally substituted amino group,n=0, 1 or 2,are highly suitable for dyeing and printing hydroxyl- and amido-containing materials and produce light- and wet-fast blue dyeings and prints.
摘要:
A new process for the preparation of triphendioxazine compounds is provided.The process is characterized in that a 2,5-diarylaminobenzoquinone compound is treated with oleum in the presence of iodine or an inorganic iodine compound.
摘要:
The present invention relates to new phthalocyanine reactive dyestuffs which, in the form of the free acid, correspond to the formula I ##STR1## wherein Pc, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, a, b and c have the meaning given in the text of the Application.The phthalocyanine radical Pc can be metal-free, but preferably contains a metal.The invention furthermore relates to processes for the preparation of the dyestuffs of the formula I and to the use of these compounds for dyeing or printing materials containing hydroxyl groups and/or nitrogen.
摘要:
An electrochemical process for the preparation of benzanthrones and planar, polycyclic aromatic oxygen-containing compounds is described. The process is carried out in an acid medium in an electrolytic cell which is separated by a diaphragm into a cathode compartment and an anode compartment.In the cathode compartment, anthraquinone or an anthraquinone derivative is reduced electrolytically to oxanthrone and the latter is reacted with glycerol to give the corresponding benzanthrone.In the anode compartment, a transition metal ion is simultaneously converted electrolytically from a lower oxidation stage into the next higher oxidation stage. The metal ion of higher valency is then used in the anolyte as an oxidizing agent by means of which the corresponding oxygen-containing compounds are obtained, starting from planar, polycyclic aromatic compounds.
摘要:
Azo reactive dyestuffs which in the acid form correspond to the formula ##STR1## wherein R denotes hydrogen or lower alkyl, W denotes a direct bond or a bridge member, Z denotes a reactive group and A denotes the radical of a coupling component, and their use for the dyeing and printing of materials containing hydroxyl groups or amide groups as well as for the wash-fast dyeing and printing of natural or regenerated cellulose.