Patent ID: 7429392

Claim:
A coating material for protection against microorganism infestation on surfaces exposed to the effects of damp or water; said coating material having a pH of at least 11.0 comprising a biocide which is bound in a carrier material composed of particulate solids of a wall material containing a formaldehyde-melamine resin which protects the biocide from being decomposed in a strongly alkaline environment having a pH of at least 11.0 which is released retardedly therefrom and wherein the biocide is a zinc pyrithione, 4,5-dichloro-2-octylisothiazolin-3-one, 3-iodo-2-propynyl N-butylcarbamate, 2-n-octylisothiazolin-3-one, methyl 1H-benzimidazol-2-ylcarbamate, or N 2 -t-butyl-N 4 -ethyl-6-methylthio-1,3,5-triazine-2,4-iyldiamine or a mixture of two or more of these compounds.