Abstract: Disperse dyes of the formula (I) ##STR1## wherein R represents substituted or unsubstituted alkyl, cycloalkyl or hydrogen, R' represents substituted or unsubstituted alkyl, cycloalkyl, aralkyl or phenyl, and R" represents a radical of the formulae --NR'"R"" or --OX, wherein X represents substituted or unsubstituted alkyl, cycloalkyl, aralkyl or phenyl and R"' and R"" each represent hydrogen or substituted or unsubstituted alkyl radicals which, together with the nitrogen atom to which they are attached, are also able to form a 5- or 6-membered ring, and n is 1 or 2. The new dyestuffs give fast blue shades on polyester fabric.

Abstract: The present invention provides useful new fibre-reactive disperse dyes of the formula (1) ##STR1## wherein R.sub.1 represents hydrogen or alkyl,R.sub.2 represents hydrogen, alkyl, cycloalkyl, aralkyl or substituted or unsubstituted phenyl, and R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, can also form a 5- to 7-membered heterocyclic ring,R.sub.3 represents hydrogen or alkyl,R.sub.4 represents an alkyl radical of 1 to 6 carbon atoms which is substituted in .alpha.- and .beta.-position, preferably only in .alpha.-position, by halogen, for example bromine and above all chlorine, or represents an .alpha.,.beta.-unsaturated alkene radical which can be substituted in .alpha.- or .beta.-position by halogen, such as bromine and above all chlorine,A represents an alkylene or cycloalkylene radical which optionally contains oxygen or sulphur,X represents hydrogen, chlorine, bromine, cyano, or COOR.sub.5, andR.sub.

Abstract: 1,5-dihydroxy-4,8-diaminoanthraquinone compounds of the formula I ##STR1## wherein Y represents a linear or branched alkyl group of 1 to 5 carbon atoms,R represents a hydrogen atom, an unsubstituted or substituted alkyl group of 1 to 5 carbon atoms or the cyclohexyl group, andEach of R.sub.1 and R.sub.2 independently represents a hydrogen atom, the methyl, ethyl or iso-propyl group.

Abstract: The present invention provides useful new fibre-reactive disperse dyes of the formula (1) ##STR1## wherein R.sub.1 represents hydrogen or alkyl,R.sub.2 represents hydrogen, alkyl, cycloalkyl, aralkyl or substituted or unsubstituted phenyl, and R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, can also form a 5- to 7-membered heterocyclic ring,R.sub.3 represents hydrogen or alkyl,R.sub.4 represents an alkyl radical of 1 to 6 carbon atoms which is substituted in .alpha.- and .beta.-position, preferably only in .alpha.-position, by halogen, for example bromine and above all chlorine, or represents an .alpha.,.beta.-unsaturated alkene radical which can be substituted in .alpha.- or .beta.-position by halogen, such as bromine and above all chlorine,A represents an alkylene or cycloalkylene radical which optionally contains oxygen or sulphur,X represents hydrogen, chlorine, bromine, cyano or COOR.sub.5, andR.sub.

Abstract: Dyes of the formula ##STR1## WHEREIN F is a dye of the disperse class, n is 1 or 2, and W is the radical of a diammonium or aminoammonium compound which is linked through an ammonium group to the methylenecarbonyloxy radical, said dyes finding utility in dyeing and printing hydrophobic synthetic organic materials, especially polyester materials in an aqueous dyebath at elevated temperatures, whereby the carbacyl group undergoes hydrolysis to form a disperse dye which exhausts onto the material.

Abstract: The present invention provides useful new fibre-reactive disperse dyes of the formula (1) ##STR1## wherein R.sub.1 represents hydrogen or alkyl,R.sub.2 represents hydrogen, alkyl, cycloalkyl, aralkyl or substituted or unsubstituted phenyl, and R.sub.1 and R.sub.2, together with the nitrogen atom to which they are attached, can also form a 5- to 7-membered heterocyclic ring,R.sub.3 represents hydrogen or alkyl,R.sub.4 represents an alkyl radical of 1 to 6 carbon atoms which is substituted in .alpha.- and .beta.-position, preferably only in .alpha.-position, by halogen, for example bromine and above all chlorine, or represents an .alpha.,.beta.-unsaturated alkene radical which can be substituted in .alpha.- or .beta.-position by halogen, such as bromine and above all chlorine,A represents an alkylene or cycloalkylene radical which optionally contains oxygen or sulphur,X represents hydrogen, chlorine, bromine, cyano or COOR.sub.5, andR.sub.

Abstract: An anthraquinone dyestuff which is sparingly soluble in water of the formula wherein Y is amino, alkylated amino or hydroxyl, the ring A can be substituted by halogen, methyl, ethyl, methoxy, ethoxy, nitro or acylamino, Z is acyl or hydrogen, and one of R.sub.1 and R.sub.2 is hydrogen and the other is a substituted or unsubstituted lower alkyl, cycloalkyl, or aryl or a carboxy ester group. The dyestuffs dye polyester fibers in orange or red-violet shades with good fastness.

Abstract: A process for the manufacture of anthraquinone compounds of formula ##STR1## wherein X represents a hydrogen atom or a substituted or unsubstituted lower alkyl radical of 1 to 6 carbon atoms or a substituted or unsubstituted aryl radical, and the ring A can be further substituted, by sulphonating 1,5-dialkoxy-, 1,5-dicycloalkoxy- or diaryloxy-anthraquinone in the 2 and 6 positions, introducing two amino groups in positions 4 and 8 by treating the sulphonated intermediate with hydroxylamine or a salt thereof in sulphuric acid medium, in the presence of a metal catalyst, introducing the radical ##STR2## by reacting the boric acid complex of 1,5-dihydroxy-4,8-diaminoanthraquinone-2,6-disulphonic acid with a compound of formula ##STR3## saponifying the boric acid groups and splitting off a SO.sub.3 H group, which process comprises using 1,5-dialkoxy-, 1,5-dicycloalkoxy- or 1,5-diaryloxyanthraquinone as starting compounds and reacting them to give the end product of formula I.

Abstract: A scanning device for use in conjunction with TIG spot welding lugs on a commutator to taps on the winding of a rotor includes a scanning arm pivotally mounted on a support which can be actuated between a raised position wherein the lower end of a scanning finger depending from the lower end of the scanning arm is disposed outside a circle circumscribed by the ends of the commutator lugs and a lowered position wherein the scanning finger projects into the gaps existing between adjacent lugs. A welding order is released in response to deflection of the scanning arm brought about by contact between the scanning finger and a lug upon rotation of the rotor as well as an order to actuate the support to its raised position for a predetermined period, the support then being returned to its lowered position for scanning the next adjacent lug.

Abstract: Anthraquinone dyestuffs of the formula ##SPC1##In which R.sub.1 and R.sub.2 independently of one another each denote hydrogen or a lower alkyl group, X denotes a direct bond, --CH.sub.2 --, --O-- or --S--, and Y denotes the nitrile group, a thiocarboxylic acid ester group, a carbacyl group, or an optionally substituted aliphatic, cycloaliphatic, carbocyclic-aromatic or heterocyclic radical. The dyestuffs yield fast blue shades on polyesterfibers.

Abstract: A fluid cooled stator winding of a dynamo-electrical machine is comprised of stator bars each composed of a combination of solid and hollow conductor strands. The end portions of the hollow conductor strands protrude beyond the ends of the solid conductor strands of the bar and are grouped together in a conductor bundle on which is cast a body of synthetic resin that forms a nipple for connection of a hose to the bundle of hollow conductor strands for circulation of the fluid coolant.