Ciba-geigy Corporation

Ciba Specialty Chemicals Corporation

Basf Se Ludwigshafen

Reto Luisoli

Werner Stegmann

Roland A Winter

David G Leppard

Roger Martin

Rudolf Schwabe

Paul Dubs

Robert E Detlefsen

Rinaldo Husler

Samuel Evans

Ernst Minder

Hans-Rudolf Meier

Gerrit Knobloch

Hans R Meier

Hugo Gross

Rinaldo H&uuml;sler

Robert E Detiefsen

Fabio Pizzoli

The invention relates to the preparation of an antistatic composition comprising adding a liquid or a dissolved ionic substance to a porous polymer and processing the porous polymer together with further additives and further thermoplastic polymers in the melt. The invention relates also to the antistatic composition itself and to its use for rendering polymers antistatic.

Process for the preparation of an antistatic composition

Process for the preparation of mercaptomethylphenois

A novel process for the preparation of compounds of formula I

Phenyl alkyl ketone substituted by cyclic amine and a process for the preparation thereof

A novel process for the preparation of compounds of formula I ##STR1## by aminolysis of a p-halophenyl alkyl ketone of formula II ##STR2## with a cyclic amine of formula III ##STR3## in water at a temperature of at least 130.degree. C., in which formulae X is a halogen atom and R.sub.1, R.sub.2 and R.sub.3 are as claimed in claim 1, as well as the novel compounds of formula I and their use for the preparation of photoinitiators for the photopolymerisation of ethylenically unsaturated compounds.

Phenyl alkyl ketone substituted by cyclic amine and a process for the

Compounds of formula Ia ##STR1## in which R.sub.1 is hydrogen, R.sub.2 is methyl, tert-butyl or cyclohexyl, and R.sub.7 and R.sub.8 independently of one another are C.sub.1 -C.sub.18 alkyl, phenyl or C.sub.7 -C.sub.18 alkylphenyl are novel compounds having utility as stabilizers.

Cyclohexyl substituted hydroxybenyzlphosphonates

Liquid substituted 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid catalyst at 100.degree.-200.degree. C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.

Liquid substituted 2H-benzotriazole mixtures, stabilized compositions

Compounds of formula ##STR1## wherein R.sub.1 is hydrogen alkyl, alkoxy, phenyl, phenylaklyl or halogen, and R.sub.2 is alkyl phenyl, phenylaklyl or cycloalkyl, are prepared by reacting a compound of formula ##STR2## with a compound of formula ##STR3## wherein R.sub.3 and R.sub.4 are alkyl, and formaldehyde, in a one-pot process in the absence of a solvent.

Process for the preparation of symmetrical

A process for the preparation of compounds of the general formula I ##STR1## in which R.sub.1 is hydrogen or methyl, R.sub.2 and R.sub.3 independently of one another are C.sub.1 -C.sub.18 alkyl, C.sub.5 -C.sub.8 cycloalkyl, phenyl, C.sub.7 -C.sub.9 phenylalkyl or halogen, R.sub.2 is additionally hydrogen and R.sub.7 and R.sub.8 independently of one another are C.sub.1 -C.sub.18 alkyl, phenyl or C.sub.7 -C.sub.18 alkylphenyl, which comprises reacting a phenol of the formula II ##STR2## in which R.sub.1 to R.sub.3 have the meaning described above, with formaldehyde or paraformaldehyde, an amine of the formula III

Process for the preparation of hydroxybenzylphosphonates

A process for the preparation of compounds of formula I ##STR1## by reacting a phenol with formaldehyde and a thiol of formula HS--C.sub.n H.sub.2n --COO--R.sub.3 under excess pressure and in the presence of dimethylamine. The symbols R.sub.1 and R.sub.2 are independently alkyl, R.sub.3 is alkyl or alkyl interrupted by --O-- or --S--, and n is 1 or 2.

Process for the preparation of phenolic thiocarboxylic acid esters

Liquid substituted, 2H-benzotriazole mixtures are prepared by alkylation with concomitant dealkylation, fragmentation and realkylation of 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazoles or of 2-(2-hydroxy-3,5-dialkylphenyl)-2H-benzotriazoles with straight or branched alkenes of 8 to 30 carbon atoms in the presence of an acid catalyst at 100.degree.-200.degree. C. The liquid mixtures exhibit outstanding efficacy in protecting organic substrates from light induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.

Stabilized compositions containing liquid substituted 2H-benzotriazole

A process for the preparation of a mixture of 2-(2-hydroxyphenyl)benzotriazole which is liquid at room temperature by alkylating 2-(2-hydroxy-5-methylphenyl)benzotriazole with a C.sub.8 -C.sub.14 .alpha.-olefin in the melt at elevated temperature, in the presence of sulfonic acid as catalyst, comprising using not less than 0.5 mol of the acid catalyst and 1.5-3 mol of .alpha.-olefin per mol of 2-(2-hydroxy-5-methylphenyl)benzotriazole, carrying out the alkylation in the temperature range from 165.degree. to 190.degree. C., separating the crude product phase upper phase) from the sulfonic acid phase, and working up said crude product phase by distillation by means of a thin-film evaporator, a thin-film evaporator fitted with a distillation column, or a short path distillation apparatus.

Process for the preparation of liquid mixtures of alkylated

There is disclosed a process for the preparation of compounds of formula I or II ##STR1## from phenols by reaction with formaldehyde and mercaptans in the presence of mono-, di- or trimethylamine or mono- or diethylamine. The symbols R.sub.1 is alkyl, hydroxy or alkoxycarbonyl substituted alkyl; alkyl; aryl, cycloalkyl or aralkyl, R.sub.2 is hydrogen, alkyl, alkenyl or halogen, R.sub.3 and R.sub.4 are independently alkyl, allyl, cycloalkyl, phenyl, benzyl, halogen or --CH.sub.2 --S--R.sub.1, Z.sub.1 is --S-- or alkylene, and Z.sub.2 is hydrogen, alkyl or --CH.sub.2 --S--R.sub.1. The mercaptomethylphenols are valuable antioxidants for plastics, elastomers, mineral oils and synthetic lubricants.

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Holstein, Switzerland

Reto Luisoli