Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Peter Sutter

Claus D Weis

Jean-Marie Adam

Peter Aeschlimann

Rainer Hildebrand

Urs Lehmann

Beat Schmidhalter

Heinz Spahni

Jean-Luc Budry

Francine Casi

The present invention relates to anthraquinone dyes of the formula (I) where Ris hydrogen, Ris hydrogen or CO&#x2014;CCalkyl moiety may be substituted by carboxyl, or is (II) wherein Ris hydrogen, C-Calkyl, hydroxyl, carboxyl or halogen, Ris hygrogen, C-Calkyl or halogen and Ris hydrogen or C-Calkyl or when Ris halogen R8 ? may be methyl or halogen Ris hydrogen or halogen, Ris hydrogen or halogen and n is (0), (1) or (2), with the proviso that R, R, R, Rand Rare not all hydrogen at one and the same time, processes for their preparation and their use for dyeing or printing hydrophobic fiber materials or for preparing colored plastics or polymeric color particles.

Anthraquinone dyes, preparation thereof and use thereof

The present application relates to a process for preparing dyed plastics or polymeric dye particles characterized in that it comprises mixing a high molecular weight organic material with a coloristically effective amount of at least one dye of the formula where Ris hydrogen, hydroxyl or a radical &#x2014;NHCO&#x2014;R, where Ris C-Calkyl or unsubstituted or C-Calkyl- or halogen-substituted phenyl, Ris hydrogen, hydroxyl or a radical W&#x2014;R, where W is &#x2014;NHCO&#x2014; or &#x2014;S&#x2014; and Ris C-Calkyl or unsubstituted or C-Calkyl- or halogen-substituted phenyl, Ris hydrogen, Ris hydrogen or hydroxyl, Ris hydrogen, or Rand Rcombine to form the radical of the formula, where the rings A and B may independently bear further substituents.

Preparation of dyed plastics or polymeric dye particles

The present invention relates to a process for dyeing or printing manufactured natural polymer or synthetic hydrophobic fiber materials, characterized in that it comprises using dyes of the formula (I), where Ris hydrogen, hydroxyl or a radical &#x2014;NHCO&#x2014;R, where Ris C-Calkyl or unsubstituted or C-Calkyl- or halogen-substituted phenyl, Ris hydrogen, hydroxyl or a radical W&#x2014;R, where W is &#x2014;NHCO&#x2014; or &#x2014;S&#x2014; and Ris CCalkyl or unsubstituted or C-Calkyl- or halogen-substituted phenyl, Ris hydrogen, Ris hydrogen or hydroxyl, Ris hydrogen, halogen, methoxy, phenoxy or phenylthio, or Rand Rcombine to form the radical of the formula (II), where the rings A and B may independently bear further substituents, to the use of these dyes for trichromatic dyeing of manufactured natural polymer or synthetic hydrophobic fiber materials and mass dyeing of plastics materials and to producing solid on-tone combinations of plastics material and manufactured natural polymer or synthetic fiber material.

Dyeing or printing of manufactured natural polymer and synthetic hydrophobic fiber materials

The invention relates to an optical recording medium, comprising a substrate and a recording layer, wherein the recording layer comprises a compound of formula (I), wherein R, R, R, R, R, R, R, R, R, R, R, Rand Rare each independently of the others hydrogen, Gor C-Calkyl, C-Calkenyl, C-Calkynyl, C-Ccycloalkyl, C-Ccycloalkenyl, C-Caralkyl, C-Caryl, C-Cheteroaryl or C-Cheterocycloalkyl, each unsubstituted or substituted by one or more identical or different substituents G, wherein Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand R, Rand Rand/or Rand Rcan independently of one another be bonded to one another in pairs separately or, when they contain substitutable sites, via a direct bond or via a &#x2014;CH&#x2014;, &#x2014;O&#x2014;, &#x2014;S&#x2014;, &#x2014;NH&#x2014; or &#x2014;NC-Calkyl-bridge in such a manner that, together with the atoms and bonds indicated in formula (I), five- or six-membered, saturated, unsaturated or aromatic, unsubstituted or G-substituted rings are formed, Gis any desired substituent,?m-is an inorganic, organic organometallic anion, Yis a proton or a metal, ammonium or phosphonium cation, and m and n are each independently of the other a number from 1 to 5, and p and q are each independently of the other O or a number from 0.2 to 6, the ratio of p and q to one another, depending upon m and n and, as applicable, the number of charged G, being such that in formula (I) there is no excess positive or negative charge. Generally the optical recording medium according to the invention additionally comprises a reflecting layer. The recording media according to the invention exhibit high sensitivity and good playback characteristics, especially at high recording and playback speeds. The light stability is also excellent.

Fast-writable and precision-writable high-capacity optical storage media

The invention relates to compounds of formula ##STR1## The compounds of formula (1) are suitable as dye for dyeing or printing hydroxyl group-containing or nitrogen-containing fibre materials and give dyeings of prints having good allround fastness properties.

Azo dyes

Azo dyes of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are unsubstituted or hydroxy-, C.sub.1 -C4-alkoxy- or halogen-substituted C.sub.1 -C.sub.4 -alkyl or C.sub.1 -C.sub.4 -alkoxy;

Disazo dyes containing two carbonylamino groups processes for their

Azo dyes of the formula ##STR1## in which R.sub.1, R.sub.2, R.sub.3, R.sub.4 and R.sub.5 independently of one another are hydrogen, C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkoxy or halogen,

Azo dyes, processes for their preparation and their use

The invention relates to dye mixtures consisting of

Azo dye mixtures and their use

A process for the preparation of alkali metal salts of phosphonic acid monoalkyl esters of formula ##STR1## by reacting 1 mole of a phosphonic acid ester of formula ##STR2## with 1 mole of a finely particulate alkali metal halide of formula XY. In these formulae, R is straight chain or branched C.sub.1 -C.sub.20 alkyl, R.sub.1 is C.sub.1 -C.sub.4 alkyl, X is an alkali metal cation and Y is a halogen anion.

Process for the preparation of alkali metal salts of phosphonic acid

Metal salts of phosphoric and phosphonic acid esters of formula ##STR1## wherein R is C.sub.1 -C.sub.4 alkoxy or straight chain or branched unsubstituted C.sub.1 -C.sub.20 alkyl or C.sub.2 -C.sub.6 alkenyl,

Process for the preparation of metal salts of phosphoric and phosphonic

A process is described for the preparation of compounds of the formula ##STR1## in which R and X are as defined in claim 1. The compounds of the formula (1) are valuable intermediates in the synthesis of triarylmethane dyes and triarylmethanelactones.

Process for the preparation of substituted pyridines

There are disclosed benzanthrone lactones of formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are as defined in claim 1. The benzanthrone lactones of formula (1) are important intermediates for the synthesis of novel dyes which are obtained by coupling suitable diazo components to said compounds of formula (1).

Benzanthrone lactones

A novel process for producing 2,3,5-trichloropyridine is described. In this process, 2,3,4,5-tetrachloropyridine is reacted, in an alkanephosphonic acid dialkyl ester (dialkyl alkane phosphonate) having 1 to 4 carbon atoms in each of the alkyl groups or in a phosphoric acid trialkyl ester (trialkyl phosphate) having 1 to 4 carbon atoms in each of the alkyl groups as the solvent, at 60.degree. to 120.degree. C., in the presence of 1.4 to 2.8 mols, per mol of 2,3,4,5-tetrachloropyridine, of an ammonium salt of an inorganic or organic acid, with 1.2 to 1.6 gram atoms of zinc per mol of 2,3,4,5-tetrachloropyridine, the 2,3,4,5-tetrachloropyridine being selectively dechlorinated in the 4-position. 2,3,5-Trichloropyridine is a valuable intermediate for producing herbicidally effective .alpha.-[4-(3',5'-dichloropyrid-2-yloxy)-phenoxy-]-alkanecarboxylic acids and derivatives thereof. There are also described novel ammonium salts of methanephosphonic acid monomethyl ester, in the presence of which salts the selective dechlorination of 2,3,4,5-tetrachloropyridine in the 4-position is advantageously performed.

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Muttenz, Switzerland

Peter Sutter