Лако-красочные материалы — производство

The majority of the commercially important epoxy resins are derived by reacting epichlorohydrin with various starting materi­als containing functional groups with an active hydrogen, such as a phenolic hydroxyl, hydroxyl, carboxylic acid, or amine. The initial reaction yields chlorohydrin, which upon subsequent dehydrochlo­rination yields a glycidyl group (Figure 2.37). Another class of epoxy resins and compounds are prepared by epoxidation of compounds containing carbon-carbon unsaturation using peracids or hydrogen peroxide. This chapter will briefly describe the major types of epoxy resins used in the coating industry.