Sandoz Gmbh

Sandoz Ltd., (sandoz Ag)

Schweizerische Aluminium Ag

Hans Bohler

Rodolf Altiparmakian

Rolf Griesser

Jean-Francois Paulet

Fritz Schneeberger

Bruno Boetsch

Ernst Weisskopf

Gunther Tscheulin

In acidic Sn(II)-containing electrolytes for coloring oxide layers on anodized aluminum or aluminum alloys, or for electroplating, the Sn(II)-ions are oxidized. By the addition of substances, so called stabilizers, to the electrolytes this oxidation can be more or less prevented i.e. Sn(II) can be more or less stabilized. Furthermore, the effectiveness of the stabilizer can be decisive for the quality of the deposit or the coloring of the oxide layer. It is known that the presence of substantial amounts of Sn(IV) along with Sn(II), as a result of inadequate stabilization of the Sn(II), impairs the quality of the surface treatment. An acidic, Sn(II)-containing electrolyte containing an addition of at least one soluble diphenylamine or substituted diphenylamine derivative stabilizes the Sn(II) and produces flawless coloring.

Improvements in processes for coloring anodized aluminum and/or aluminum

Anodically oxidized aluminium or aluminium alloy surfaces are sealed in the presence of an anti-smut agent which is a colorless, light-fast, organic compound having a molecular weight of at least 350 and containing

Sealing of anodically oxidized aluminum or aluminum alloy surfaces and

Disclosed is a mass-dyed polymeric material, e.g. polyester, comprising, as dyestuff, a compound or mixture of compounds of formula I ##STR1## herein the nuclei A, B and D may bear one or more substituents and Me is Ni or Cu. The mass-dyed polymeric material is preferably prepared by incorporating the compounds of formula I in form of a master-batch.

Polymeric material mass-dyed with certain metalized bis-azomethine

Disclosed are compounds of formula I, ##STR1## wherein R.sub.1 is hydrogen, carboxy, alkoxycarbonyl, aminocarbonyl, mono- or dialkylaminocarbonyl, benzimidazolonyl-5-aminocarbonyl or phenylaminocarbonyl, the phenyl radical of which is unsubstituted or substituted by up to 3 substituents selected from up to 3 from chlorine, bromine and methyl and up to 2 from cyano, nitro, methoxy, ethoxy and trifluoromethyl,

Azomethine copper complexes

Disclosed are the compounds of the following formula I, their production and use as pigments, particularly their use in pigmenting paper, plastics and as pigments in surface coating media, ##SPC1## In which either

Pigmenting process employing acridone compounds and products produced

Disclosed are anthraquinonylamino-nitroacridones, their production and their use as pigments, particularly their use in pigmenting paper, plastics and as pigments in surface coating media.

Acridone compounds

Disclosed are pigment dyes containing the basic structure of formula I, ##SPC1## in which R.sub.1 is alkyl,

Bisazomethine metal complexes

Disclosed are pigments of formula I ##SPC1## in which

Growing community of inventors

Rheinfelden, Switzerland

Hans Bohler