Coupling reactions epoxy-based

Peroxidic groups in oxidized polyolefins have frequently been employed as sources of free radicals to allow grafting of vinyl monomers to polyolefins (2f[). Some of the products from the gas reactions also have interesting potential as reactive sites. For example, chloroformate groups are well known to react with alcohols, and amines 2J[). Thus chloroformate groups could be useful for example in coupling highly oriented polyolefin fibres to resins such as epoxy based systems. 

Wang X, et al. 1997c. Epoxy based nonlinear optical polymers from post azo coupling reaction. Macromolecules 30(2) 219 225. 

Figure 5.1. Chemical structure and synthetic route of some epoxy-based azo polymers prepared by the postpolymerization azo coupling reaction.

Wang, X., Kumar, J.,Tripathy, S. K., Li, L., Chen, J.-I. and Marturunkakul, S. (1997) Epoxy-based nonUnear optical polymers from post Azo coupling reaction . Macromolecules, 30,219-225. 

Bisphenol A based liquid epoxy resins are prepared in a two-step reaction sequence from epichlorohydrin and bisphenol A. ITie first step is the base-catalyzed coupling of bisphenol A and epichlorohydrin to yield a chlorohydrin. 

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