摘要:
The invention relates to a process for the preparation of concentrated storage-stable aqueous solutions of yellow azo- and azoxystilbene dyes which are obtained by self-condensation of 4-nitrotoluene-2-sulfonic acid in the presence of an alkali metal hydroxide, by converting the sparingly soluble alkali metal salt of the dye into a water-soluble ammonium salt by double cation exchange via a lipophilic ammonium salt, which process comprises carrying out the double ion exchange in a two-phase system of nitrobenzene/water and using, for the first ion exchange a di- or trialkylamine containing a total of 12 to 40 carbon atoms and, for the second ion exchange, a mono-, di- or trialkanolamine containing 2 to 4 carbon atoms in each alkyl moiety.The concentrated storage-stable dye solutions so obtained are particularly suitable for dyeing paper.
摘要:
A process for the reductive removal of halogen atoms from amino-, acylamino- or hydroxyanthraquinones, said halogen atoms being bonded in the .alpha.-position and/or ortho-position to amino, acylamino or hydroxyl groups, which comprises carrying out the reductive removal in basic medium with hydrazine or hydrazine derivatives.
摘要:
Reactive dyes of the formula ##STR1## wherein Y is a --CH.dbd.CH.sub.2 or --CH.sub.2 CH.sub.2 --X radical, in which X is a leaving group, and Z is hydrogen, halogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or carboxy, and K is the radical of a coupling component which couples at pH.ltoreq.7, are suitable for dyeing and printing textile fibre material and give dyeings and prints of good fastness properties.
摘要:
A process for dyeing synthetic textile material in a halogenated hydrocarbons solvent by the exhaust process, comprising the use, for dyeing, of azopyridone dyestuffs of formula I ##STR1## wherein R.sub.1 and R.sub.2 each independently represent hydrogen, or an optionally substituted lower alkyl, lower alkenyl, cycloalky or aryl radical, orR.sub.1 and R.sub.2 form together with the nitrogen atom binding them, optionally with the inclusion of a further hetero atom, a non-aromatic 5- or 6-membered hetero ring,X represents halogen, the cyano or nitro group,Y represents hydrogen, or a lower alkyl group optionally substituted by the hydroxyl or cyano group, andZ represents --CO-- or --SO.sub.2 --.
摘要:
A process for measuring the liquid absorption capacity of a powder includes the step of spraying a liquid in the form of a spray cone at a constant throughput from at least one spraying device onto a powder being stirred in the mixing chamber of a mixer, the powder filing between 10 to 80% of the mixing chamber. The torque of the stirrer of the mixer is measured both before and during the spraying step, and from this measurement both a maximum level of the torque and the time difference between the beginning of the spraying step and the time when the maximum level is reached are determined. An amount of liquid absorption of the powder is then determined based upon the liquid mass which is sprayed during that time difference.
摘要:
New azo dyes are disclosed which are free from sulphonic acid groups and which are optionally quaternized in the coupling component, and mixtures of such dyes, which dyes correspond to the formula ##STR1## wherein X represents chlorine, optionally substituted phenyloxy, phenylmercapto, alkylmercapto, naphthyloxy, naphthylmercapto, or a heterocyclic radical which is bound by way of --O--, --NH-- or --S--, X.sub.1 represents hydrogen, cyano, lower alkoxy, carboxy, optionally branched and/or substituted alkyl having 1 to 12 carbon atoms, optionally branched and/or substituted lower alkenyl, optionally substituted cycloalkyl, aralkyl having 7 to 10 carbon atoms, aryl, carbamoyl, or a heterocyclic radical, W represents hydrogen, a cyano group, an optionally branched and/or substituted lower alkyl group, an optionally substituted cycloalkyl group, an aralkyl group (having 7 to 10 carbon atoms), an aryl group or the radicals ##STR2## wherein R.sub.1 and R.sub.2 represent lower alkyl, R.sub.2 also represents optionally substituted cycloalkyl, aralkyl or aryl, and R.sub.3 and R.sub.4 represent hydrogen, lower alkyl, hydroxyalkyl, lower alkoxyaryl, cycloalkyl, aralkyl or aryl, and the alkyl radicals R.sub.3 and R.sub.4 can also be bound direct or by way of a hetero atom, R represents hydrogen, optionally substituted amino, optionally branched and/or substituted alkyl, optionally branched and/or substituted alkenyl, optionally substituted cycloalkyl, aralkyl or aryl or a heterocyclic radical, which dyes are useful for the dyeing and printing of synthetic fibres, especially polyester fibres if non quaternized dyes are used or acrylic fibres if quaternized dyes are used.
摘要:
A Process is described for the pretreatment or finishing of materials with processing agents dissolved or dispersed in water or in organic solvents, wherein the portion of the treatment liquor or of the pretreatment liquor containing the processing agent constitutes the volumetrically smaller part, and the remaining portion of this treatment liquor consists of at least one inert organic compound selected from a water-insoluble, aliphatic, cycloaliphatic and aromatic compound which is perfluorinated or mixed-halogenated, or which contains a perfluorinated or mixed-halogenated radical which compounds are immiscible with the treatment liquor; and wherein the liquor optionally contains additional auxiliaries that do not form an emulsion with the inert organic compound, and the system is very thoroughly mixed during the pretreatment or finishing process.
摘要:
Quinoline derivatives of the formula ##STR1## where X, n, R.sup.1, R.sup.2 and Y have the meanings given in the description, are used for controlling undesirable plant growth.
摘要:
3,7-dichloroquinoline derivatives of the formula ##STR1## where R has the meanings given in the disclosure, a process for the preparation thereof, and their use for combating unwanted plant growth.
摘要:
A composition for use in an electro-optical device, particularly a display device, contains anthraquinone pleochroic dye of formula (I): ##STR1## where R.sub.1 is a substituted or unsubstituted amino group or a hydroxy group; R.sub.2 is a hydrogen, a substituted or unsubstituted amino, a hydroxy or a cyano group; each of R.sub.3 and R.sub.4, which are identical or different, is a hydrogen atom, a substituted or unsubstituted amino group, a hydroxy, a nitro or a cyano group; R is a hydrogen or halogen atom or a hydroxy, lower alkyl or lower alkoxy group; n is 1, 2, 3 or 4, the Rs being identical or different when n is 2, 3 or 4; and X is a hydrogen or halogen atom, a hydroxy or mercapto group, a straight, branched or cyclic C.sub.1-16 alkyl radical, a substituted or unsubstituted aryl group or a group of formula OR', OAr, SR', SAr, COOR', COOAr, COO--C.sub.6 H.sub.4 --R', OOCR', OOCAr, OOC--C.sub.6 H.sub.4 --R', CONHR', CONHAr, NHR', NHAr, NHCOR', NHCOAr, OCOOR', OCOOAr, CH.dbd.N--C.sub.6 H.sub.4 --R', N.dbd.CH--C.sub.6 H.sub.4 --R', N.dbd.N--C.sub.6 H.sub.4 --R' or ##STR2## where R' is a hydrogen atom or a straight, branched or cyclic C.sub.1-10 alkyl residue.Compounds of formula (I) have a high order parameter and are very stable.
摘要翻译:用于电光装置,特别是显示装置的组合物含有式(I)的蒽醌多色染料:其中R1是取代或未取代的氨基或羟基; R2是氢,取代或未取代的氨基,羟基或氰基; R 3和R 4各自相同或不同,为氢原子,取代或未取代的氨基,羟基,硝基或氰基; R是氢或卤素原子或羟基,低级烷基或低级烷氧基; n为1,2,3或4,当n为2,3或4时,Rs相同或不同; X是氢或卤原子,羟基或巯基,直链,支链或环状的C 1-16烷基,取代或未取代的芳基或式OR'的基团,OAr,SR',SAr,COOR' ,COOAr,COO-C6H4-R',OOCR',OOCAr,OOC-C6H4-R',CONHR',CONHAr,NHR',NHAr,NHCOR',NHCOAr,OCOOR',OCOOAr,CH = N-C6H4-R' ,N = CH-C 6 H 4 -R',N = N-C 6 H 4 -R'或者其中R'是氢原子或直链,支链或环状C 1-10烷基残基。 式(I)化合物具有高阶参数并且非常稳定。