Abstract: Use of the mono-copper complex of a dye of formula (1) wherein Z1, Z2, R1, R2, R3, R4, X, n and m are as defined in the claims, and mixtures thereof with the bis-copper complex of such a dye, for dyeing natural and synthetic material.

Abstract: Azoxy dyes of the general formula I in the form of the free acid where n is 0 or 1, each R1 is selected from the group consisting of methoxy, hydroxyl and carboxyl, each R2 is selected from the group consisting of carboxyl, amino, C1-C4-alkylamino, allylamino, benzylamino and methoxycarbonylmethylamino, and the phenyl rings A may additionally be substituted by C1-C8-alkyl, unsubstituted or methyl- or halogen-substituted phenyl, hydroxyl, amino, nitro, halogen, carboxyl, N-benzylcarbamoyl, unsubstituted or nitro-, halogen-, C1-C4-alkoxy- or acetoxy-substituted phenylcarbamoyl and naphthylcarbamoyl or be benzofused, their copper complexes, a process for preparing the copper complex dyes, azoxy dyes of the formula I in their partially or completely deacylated form, their copper complexes, colorants comprising these azoxy dyes and/or their copper complexes and also their use for dyeing and printing natural or synthetic substrates.

Abstract: Azoxy dyes of the general formula I in the form of the free acid where n is 0 or 1, each R1 is selected from the group consisting of methoxy, hydroxyl and carboxyl, each R2 is selected from the group consisting of carboxyl, amino, C1-C4-alkylamino, allylamino, benzylamino and methoxycarbonylmethylamino, and the phenyl rings A may additionally be substituted by C1-C8-alkyl, unsubstituted or methyl- or halogen-substituted phenyl, hydroxyl, amino, nitro, halogen, carboxyl, N-benzylcarbamoyl, unsubstituted or nitro-, halogen-, C1-C4-alkoxy- or acetoxy-substituted phenylcarbamoyl and naphthylcarbamoyl or be benzofused, their copper complexes, a process for preparing the copper complex dyes, azoxy dyes of the formula I in their partially or completely deacylated form, their copper complexes, colorants comprising these azoxy dyes and/or their copper complexes and also their use for dyeing and printing natural or synthetic substrates.

Abstract: The present invention provides a method for the generation of NO gas by exposing zwitterionic polyamine-nitric oxide adducts of the formula RN?N(O)NO.sup.- !(CH.sub.2).sub.x NH.sub.2.sup.+ R', wherein R=C.sub.1 -C.sub.6 alkyl, C.sub.1 -C.sub.6 aminoalkyl, or cyclohexy, R'=hydrogen or C.sub.1 -C.sub.6 alkyl, and x=2-6, to suitable conditions to effect the release of NO, such as by contact with a mildly acidic solvent or water of neutral or slightly alkaline pH.

Abstract: Chemical derivatives of nitric oxide are provided which are stable indefinitely in oxygen-containing solutions until photolysis, whereupon they release NO. These compounds have the general formulaA--N.sup.+ (O.sup.-)=N--O--B (I)wherein A is typically a nitrogen- or oxygen-containing substituent and B is a group lablie to photolysis. The compounds are stable and inert in oxygenated aqueous solutions, but release NO upon illumination. Given the ease with which the intensity, timing and location of illumination may be controlled, these compounds are particularly useful in investigating the biological effects of NO with much higher spatial or temporal resolution than heretofore possible.

Abstract: Compounds of the formula ##STR1## wherein each A, independently, is a ##STR2## wherein R.sub.1 is hydrogen, halo, C.sub.1-4 alkyl or C.sub.1-4 alkoxy,R.sub.2 is hydrogen, halo, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --NHCONH.sub.2 or --NHCOC.sub.1-4 alkyl,R.sub.3 is hydrogen or methoxy, andm is 0, 1 or 2,each B, independently, is a radical of a diazo or coupling component, and a and each b, independently, are 0 or 1,and metal complexes thereof, which compounds or complexes are in free acid or salt form, and mixtures thereof with a compound of the formula ##STR3## or a metal complex thereof, wherein A and b are as defined above and D is a radical of a diazo or coupling component of the benzene or 1-naphthalene series are useful for dyeing and printing hydroxy group- or nitrogen-containing organic substrates, especially cellulose fibre-containing textiles (e.g., cotton), paper and leather.

Abstract: Azo dyes of the formula ##STR1## and external salts thereof, wherein F is the residue of a monoazo or disazo compound in 1:1 metal complex form or of a trisazo, disazoazoxy or tetrakisazo compound in metal-free or 1:1 metal complex form,each X is independently --NR.sub.2 --Q--NR.sub.3 R.sub.4 or --NR.sub.2 --Q--N.sup..sym. R.sub.5 R.sub.6 R.sub.7,whereinQ is linear or branched C.sub.2-6 alkylene or --NH--CO--CH.sub.2 --,R.sub.2 is hydrogen or C.sub.1-4 alkyl,each of R.sub.3 and R.sub.4 is independently hydrogen; C.sub.1-6 alkyl; C.sub.2-6 alkyl monosubstituted by cyano or hydroxy in the 2-, 3-, 4-, 5- or 6-position; phenyl(C.sub.1-3 alkyl); phenyl(C.sub.1-3 alkyl) having, on the phenyl ring, 1, 2 or 3 substituents selected from chloro, C.sub.1-4 alkyl and C.sub.1-4 alkoxy; C.sub.5-6 cycloalkyl or C.sub.5-6 cycloalkyl substituted by 1, 2 or 3 C.sub.1-4 alkyl groups or --NR.sub.3 R.sub.