Preparation for the fungicidal and algicidal finish of alkaline coating compositions

摘要

The invention relates to a preservative comprising
a) at least one isothiazolone,
b) at least one quaternary ammonium compound and
c) at least one stabilizer selected from the group of sulphite salts, hydrogen sulphite salts, sulphite-releasing compounds and hydrogen-sulphite-releasing compounds,
the presence of algicidal triazine being ruled out. The preservative inhibits the growth of fungi, algae and bacteria on or in alkaline coating compositions. The invention furthermore relates to a process for the preparation of the preservative, to its use in a coating composition, and
to the preserved composition.