Polymeric biocides. Pentachlorophenol-functionalized varnish resins
Polimery 1998, No 7-8, 454
One or more biocides are added to varnish formulations to protect the coated surface against micro-organisms. No commercial biocide exhibits all the desired properties, particularly long active life and nontoxicity, because of migration, evaporation, sublimation and leaching processes. Temporary fixation of a biocide on the backbone of a polymer by hydrolyzable bonds should result in longer life and lowered toxicity. Pentachlorophenol, a biocide, was fixed to a fatty alkyd resin and to an epoxyester of soya oil fatty acids to yield a good coat-forming functionalized resin.
Keywords: biocides, polymeric biocides, biocides fixed on polymers, alkad resins, epoxy esters, paints, protection against micro-organisms