Zinc pyrithione based biocides

Other biocides, among many which have been tried, include cresol derivatives, naphthenates, metal salts such as copper oleate and barium metaborate, and dithiocarbamates. Zinc pyrithione based biocides are effective in preventing mildew and mould growth. 

Details are given of the range of Intercide fungicides and bactericides from Akzo Chemicals for use in plastics. Factors affecting the performance of these products are discussed, and test methods for the assessment of biocidal activity in plastics are described Anew approach to protection is offered in the nature of the formation of biocidal surfaces for which Akzo also produces grades of Intercide, and further product developments are described which include the biocidal protection of polyolefins based on zinc pyrithione. 

The most widely used active ingredient for PVC is OBPA, based on 10, 10 oxybisphenoxarsine. Until recently it had a 50% market share but usage of arsenic compounds is becoming less popular. Other important biocides include OFT (2- -octyl-4-isothiazolin-3-one), 2, 4, 4 -trichloro-2 -hydroxy-diphenyl ether, zinc pyrithione, iV-butyl-1,2-... 

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