Phenols are a class of aromatic organic compounds in which one or more hydroxyl groups are attached directly to the aromatic benzene ring, C6H6. This article describes the development of phenolic resin and the formation of novolac resin and resol resin. Phenolic resol resins are used in interior can coatings and tank linings as well as for heat exchanger tube coatings because of their high chemical and thermal resistance. The article concludes with a description of the concerns that a specifier, user, or applicator should be aware of regarding the use of phenolic coatings.
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