Ciba-geigy Corporation

Fmc Corporation

Ciga-geigy Corporation

Reinhardt Grade

Joachim Lorenz

Wolfgang Wehner

Dagmar Berrer

Peter Riebli

Rene Eric Muntwyler

Heinz Peter

Brien M Thomas

3,5-Dihalogeno-1,2,6-thiadiazin-4-ones of the formula ##STR1## in which R.sub.1 and R.sub.2 independently of one another are chlorine, fluorine or bromine, in particular 3,5-dichloro-1,2,6-thiadiazin-4-one, are excellently suitable for use as biocides for the protection of industrial materials and for water systems, for example for wood, plastics, paints, oils, adhesives and industrial water circulation systems.

Biocides for protecting industrial materials and water systems

Biocidally active compounds

A process for treating water which comprises adding to the water (a) from 1 to 50 ppm of a phosphonium compound of the formula: ##STR1## in which R represents C.sub.1 -C.sub.6 groups which are unsubstituted or substituted by a cyano, hydroxy, esterified hydroxy or aryl group, R.sub.1 represents a C.sub.8 -C.sub.18 alkyl group and X represents chlorine or bromine, and optionally (b) from 0.1 to 100 ppm of an anionic water treatment agent such as a scale or corrosion inhibiting agent.

Treatment of water

Special quaternary ammonium compounds are suitable for controlling bacteria, algae and other micro-organisms in cooling water circulation systems, swimming pools and industrial water tanks.

Aqueous system treated with a biocide

2-chloro-4,6-diamino-s-triazines as algicides

Ammonium stannates-(IV)

Phosphonium organohalogenostannates-IV

A method of using mono- or dibromodicyanomethane for controlling harmful organisms in water, in aqueous systems, in oil or in fuels is disclosed. The compounds act extremely rapidly in very low concentrations.

Method of controlling harmful organisms using mono- and

A mixture of the compound of the formula I

Use of iodoacetamide and amines for the control of harmful organisms,

The invention relates to the use of diamines of the formula I ##STR1## in which R and R.sup.1 are, for example, identical and are alkyl, as active substances for the control of harmful organisms in water and other materials, especially industrial materials. Inter alia, bacteria, fungi, yeasts and algae are controlled. The control is effected in standing and running waters. In preservatives and disinfectants, the diamines are used for natural and synthetic materials, especially industrial materials.

Methods and compositions for the control of harmful organisms containing

A sea-water algicidal composition containing a triazine of the group comprising 2-methylthio-4-cyclopropylamino-6-(.alpha.,.beta.-dimethylpropylamino)-s-t riazine (I); 2-methylthio-4-cyclopropylamino-6-t-butylamino-s-triazine (II); and 2-methylthio-4-ethylamino-6-(.alpha.,.beta.-dimethylpropylamino)-s-triazin e.

Growing community of inventors

Bensheim, Germany

Reinhardt Grade