Abstract: This invention relates to new cycloaliphatic triamines which are valuable intermediate products for synthetic resins, above all for lightfast and weather resistant polyurethane resins and in particular for solvent-free or low solvent polyurethane lacquers.

Abstract: Process for the preparation of aromatic amines which additionally still contain C-C multiple bonds, characterized in that aromatic nitro compounds which still contain C-C multiple bonds are hydrogenated in the presence of cobalt sulphides as catalysts, at 20.degree. to 140.degree. C and at 5 to 150 bars hydrogen pressure.

Abstract: The invention relates to water-insoluble anthraquinone dye-stuffs of the formula ##STR1## wherein A denotes an optionally substituted cycloalkylene group,n and m denote numbers from 0 to 4 andZ.sub.1 and Z.sub.2 denote hydrogen or halogen.The dyestuffs are outstandingly suitable for dyeing synthetic fibre materials, such as those made of cellulose esters, polyamides and polyurethanes and above all those made of aromatic polyesters, according to conventional dyeing processes.

Abstract: 1-Amino anthraquinone is prepared by reacting 1-nitro-anthraquinone with ammonia in water and/or an organic solvent and thereafter treating the 1-amino-anthraquinone imine formed with water thereby converting said imine into 1-amino anthraquinone.

Abstract: Process for the preparation of aromatic amines which additionally still contain C-C multiple bonds, characterized in that aromatic nitro compounds which still contain C-C multiple bonds are hydrogenated in the presence of metal sulphides of the formula MeS.sub.x in which x is a number from 1 to 4 and Me represents a metal atom of the group consisting of iron, nickel, ruthenium, rhodium, palladium, rhenium, osmium, iridium and platinum as catalysts, at 20.degree. to 140.degree. C and at 5 to 150 bars hydrogen pressure.

Abstract: Organic isocyanate compositions are prepared by reacting organic polyisocyanates alone or in the presence of other organic compounds which contain reducible functional groups with catalytically activated hydrogen. New N-formyl-N,N'-disubstituted diisocyanato ureas may be prepared by this method. The products of this invention are particularly useful for producing light fast lacquers, coatings, adhesives, telomers and foam plastics.

Abstract: 3-Amidocoumaranones which may be substituted in the benzene ring by halo or alkyl; the compounds are obtained by treating an appropriate 2-hydroxyphenylacetic acid lactone with nitrous acid or with an ester, salt or chloride of nitrous acid in an acid medium to afford a coumaranedione-3-monoxime which is subjected to catalytic hydrogenation in the presence of an acid anhydride. The resulting 3-amidocoumaranone is an intermediate in the preparation of .alpha.-amino-2-hydroxyphenylacetic acid which can be used to synthesize antibiotics such as cephalosporin and penicillin derivatives.

Abstract: Coumaranedione-3-monoximes which may be substituted in the benzene ring by halo or alkyl. The compounds are obtained by treating the corresponding 2-hydroxyphenylacetic acid lactone with nitrous acid or with an ester, salt or chloride of nitrous acid in an acid medium. The coumaranedione-3-monoxime thus obtained is an intermediate which undergoes hydrogenation in the presence of a suitable acid anhydride to afford the corresponding 3-amidocoumaranone, which compound, upon hydrolysis in the presence of dilute acid, affords the corresponding .alpha.-amino-2-hydroxyphenylacetic acid. That product is also an intermediate which has utility in the synthesis of antibiotics, including cephalosporin and penicillin derivatives.

Abstract: Process for the preparation of 4,4'-diaminostilbene-2,2'-disulphonic acid or its alkali salts by catalytic hydrogenation of 4,4'-dinitrostilbene-2,2'-disulphonic acid in an aqueous medium, characterized in that the hydrogenation is carried out on a cobalt catalyst at 70.degree.-180.degree. C and 5-150 bars of H.sub.2, at a pH value between 6.0 and 8.5.