Ciba-geigy Ag

Franz Marti

Rudolf Buttiker

Paul Tobler

Robert Mercier

Marianne Punzar

Tibor Somlo

Jacques Gosteli

Jean Riethmann

A process and an apparatus used to produce a suspension of cyanuric chloride in water, or to react cyanuric chloride with ammonia or with amines. It is possible to produce cyanuric chloride suspensions in water which have a mean particle size of below 20 .mu.m, and a concentration of higher than 20% by weight of cyanuric chloride.

Apparatus for producing a suspension of cyanuric chloride in water, or

The process and the apparatus according to the invention are used to produce a suspension of cyanuric chloride in water, or to react cyanuric chloride with ammonia or with amines. It is possible to produce cyanuric chloride suspensions in water which have a mean particle size of below 20 .mu.m, and a concentration of higher than 20% by weight of cyanuric chloride.

Process for reacting cyanuric chloride with ammonia or with amines

Process for producing a suspension of cyanuric chloride in water

The invention describes a process for the production of benzal or benzyl bromides which contain electrophilic substituents in the ortho- and/or para-position, or mixtures thereof, by the side-chain bromination of correspondingly substituted toluene, which comprises introducing elementary chlorine, under irradiation with visible light, into a two-phase system consisting of an aqueous phase and an organic phase and containing a correspondingly substituted toluene, at least one metal bromide, and a base, and also the compounds obtained by this process.

Process for the production of substituted benzal and benzyl bromides

A process for the production of benzal bromides which contain an electrophilic substituent in the ortho- and/or para-position of the formula (Ia), or of mixtures thereof with the corresponding benzyl bromides of the formula (Ib), ##STR1## IN WHICH R represents an electrophilic substituent in the ortho- and/or para position, by treating correspondingly substituted toluenes with elementary bromine under irradiation with visible light in a two-phase system which consists of an aqueous and an organic phase, which process comprises carrying out the reaction in the presence of a base.

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Dornach, Switzerland

Franz Marti