Ciba-geigy Corporation

Ciba-geigy Ag

Kurt Burdeska

Gerhard Reinert

Dieter Reinehr

Kurt Weber

Werner Fory

Georg Pissiotas

Beat Bohner

David G Leppard

Hans-Georg Brunner

Mario Slongo

Otto Rohr

Guglielmo Kabas

Athanassios Tzikas

Jost Von Der Crone

Hansrudolf Schwander

Franz Gunter

Guglielmo Kabas, Deceased

Hans R Meyer

Rudolf Zink

Jean-Luc Birbaum

Alois Puntener

Stefan Koller

Andre Pugin

Max Jost

Andre Schmitter

Christian Zickendraht

Rene Eric Muntwyler

Hans Wilhelm Liechti

Jurgen Markert

Klaus Artz

Heinz Hefti

Alfred Hohener

Rene' Muntwyler

A photographic material is described which comprises, on a base, blue-sensitive, green-sensitive and/or red-sensitive silver-halide emulsion layers and if desired a protection layer, a layer containing a UV absorber being arranged between the uppermost silver-halide emulsion layer and the protection layer or on top of the uppermost silver-halide emulsion layer, wherein the UV absorber conforms to the formula ##STR1## in which the radicals R.sub.1 and R.sub.12 are as defined in claim 1.

Triazine compounds as UV absorbers for photographic material

A process is described for the photochemical and thermal stabilisation of undyed and dyed or printed polyester fibre materials, which comprises treating said materials with a compound of formula ##STR1## wherein R.sub.1 is hydrogen or C.sub.1 -C.sub.5 alkyl,

Hydroxyphenyl-1,3,5-triazines

A photographic material is described which comprises, on a base, blue-sensitive, green-sensitive and/or red-sensitive silver-halide emulsion layers and if desired a protection layer, a layer containing a UV absorber being arranged between the uppermost silver-halide emulsion layer and the protection layer or on top of the uppermost silver-halide emulsion layer, wherein the UV absorber conforms to the formula ##STR1## in which the radical R.sub.1 is alkyl, substituted alkyl, alkenyl, glycidyl, cycloalkyl or phenylalkyl, and R.sub.12 is alkyl, benzyl, cyclohexyl, phenyl, substituted phenyl or alkoxy.

Photographic material containing UV absorber

A process is described for the photochemical and thermal stabilization of undyed and dyed or printed polyester fiber materials, which comprises treating said materials with a compound of formula ##STR1## wherein R.sub.1 is hydrogen or C.sub.1 -C.sub.5 alkyl,

Process for the photochemical and thermal stabilization of undyed and

The novel compounds of formula ##STR1## wherein n and R are as defined in claim 1, are very suitable for use as UV absorbers in layers of photographic materials.

Phenylthiophenyl ketones

Hydroxyphenyltriazines of formula I ##STR1## wherein R is hydrogen, C.sub.1 -C.sub.18 alkyl, C.sub.2 -C.sub.6 alkyl substituted by halogen or by C.sub.1 -C.sub.12 alkoxy, or is benzyl and R' is hydrogen or methyl, are especially suitable as stabilisers for thermoplastic polymers that comprise hetero atoms in the main chain.

Stabilized polymers having hetero atoms in the main chain

There is disclosed a process for the preparation of 2-(2', 4'-dihydroxyphenyl)-4,6-diaryl-s-triazines of formula ##STR1## which comprises reacting 2-hydroxy-4,6-diaryl-s-triazines of formula ##STR2## in the temperature range from 100.degree.-150.degree. C. with thionyl chloride in the presence of a catalytic amount of a polar solvent, and subsequently reacting the chloro-s-triazine intermediate with 1,3-dihydroxybenzene using a Lewis acid in the presence of an inert organic solvent, in which formulae (1) and (2) above the rings A may be further substituted by halogen, hydroxy, lower alkyl, lower alkoxy or lower alkoxycarbonyl. The process of the invention makes it possible to prepare in simple manner and in good yield 2-(2',4'-dihydroxphenyl)-4,6-diaryl-s-triazines which find utility as UV absorbers or as starting materials of the preparation of UV absorbers.

Process for the preparation of

Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles of the formula ##STR1## in which R.sub.1 is hydrogen or chlorine and one of R.sub.2 and R.sub.3 is chlorine or lower alkyl and the other is a radical of the formula ##STR2## in which R.sub.4 and R.sub.5 independently of one another are hydrogen or methyl and M is hydrogen, an alkali metal or ammonium. The compounds of the formula (1) are used as UV absorbers for polyamide fibres, wool and mixtures thereof.

Monosulfonated 2-(2'-hydroxyphenyl)-benzotriazoles

There is disclosed a process for the preparation of 2-(2',4'-dihydroxyphenyl)-4,6-diaryl-s-triazines of formula (1) as indicated in claim 1, which process comprises reacting, in a first step, a compound of formula (4) as indicated in claim 1, with the aid of a Lewis acid, in the presence of xylene or toluene, with a substituted benzene of formula (5) as indicated in claim 1, and, in a second step, reacting the resultant compound of formula (2) as indicated in claim 1, in the presence of toluene or xylene, with chlorine or sulfuryl chloride, to give the compound of formula (3) as indicated in claim 1, and, in a third step, reacting the resultant compound with 1,3-dihydroxybenzene, with the aid of a Lewis acid, to give the compound of formula (1), in the presence of toluene, xylene or a mixture of xylene isomers.

2-methyl-thio-4,6-diaryl-triazines

Novel cationic compounds of formula ##STR1## wherein R.sub.1 and B are as defined in claim 1, are used for photochemically stabilizing basic dyeable polyamide, polyacrylonitrile and polyester fibre materials. The preparation of the novel compounds and of the novel starting materials is also described.

Cationic compounds

Intermediates useful for the preparation of fiber-reactive dyes having the formula ##STR1## in which Q is phenyl unsubstituted or substituted by C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen, nitro, cyano, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkylsulfonyl, sulfo or trihalomethyl; 1- or 2-naphthyl; or unsubstituted or C.sub.1 -C.sub.4 alkyl, nitro, cyano, C.sub.1 -C.sub.4 alkoxycarbonyl or C.sub.1 -C.sub.4 alkylthio substituted furanyl, thienyl, thiazolyl, oxazolyl, isothiazolyl, benzothiazolyl, benzoisothiazolyl, pyrazolyl, imidazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl, 1,2,4-thiadiazolyl, 1,3,4-thiadiazolyl or 1,3,5-triazinyl, and A.sub.1 and A.sub.2 independently of one another are a radical of the formula ##STR2## in which R.sub.1 and R.sub.2 independently of one another are hydrogen; C.sub.1 -C.sub.4 alkyl unsubstituted or substituted by hydroxyl, sulfo, sulfato, carboxyl, cyano, halogen, C.sub.1 -C.sub.4 alkoxycarbonyl, C.sub.1 -C.sub.4 alkanoyloxy or carbamoyl and uninterrupted or with the exception of methyl interrupted by --O-- or --NR.sub.4 -- wherein R.sub.4 is hydrogen or C.sub.1 -C.sub.4 alkyl, or naphthyl or phenyl each of which is unsubstituted or substituted by sulfo, carboxyl, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy, halogen or a group --N.dbd.N--K wherein K is a coupling component benzene, naphthalene or heterocyclic radical; or R.sub.1 and R.sub.2 together with the N atom form a piperidinyl, piperazinyl or pyrrolidinyl radical, with the proviso that at least one of the radicals A.sub.1 or A.sub.2 is further substituted by a fiber-reactive radical.

4,6-diaminopyrimidine or the like intermediates for the preparation of

Dyes suitable for dyeing a wide range of textile and non-textile materials, in particular for dyeing leather and pelts, having, in the form of the free acid, the formula ##STR1## wherein D.sub.1 and D.sub.2 are each independently of the other the radical of a diazo component of the benzene or naphthalene series which carries a hydroxy or carboxy in ortho-position to the azo group and which may or may not be further substituted,

1:2 chromium or cobalt complex axo dyes containing at least one

There is disclosed a process for quenching or suppressing the fluorescence of natural or synthetic polyamide substrates treated, or to be treated, with fluorescent whitening agents, which process comprises applying to said substrates, before or after the treatment with the fluorescent whitening agent, a sulfonated UV absorber of formula ##STR1## wherein X, R.sub.1, R.sub.2 and R.sub.3 are as defined in claim 1, and fixing said UV absorber thereon.

Process for quenching or suppressing the fluorescence of substrates

There is disclosed a process for the preparation of 3-[2'H-benzotriazol-(2')-yl]-4-hydroxybenzenesulfonic acids and salts thereof of formula ##STR1## wherein R is hydrogen or chlorine,

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Basel, Switzerland

Kurt Burdeska