| http://www.w3.org/ns/prov#value | - Polyepoxides such as the diepoxides produced by the reaction of bisphenol A (para, paraisopropylidene-diphenol) and epichlorohydrin (known commercially as Epon resins) are also useful for chain-extending the hydroxyl-containing low molecular weight diene homopolymer and copolymers by condensation-type polymerization.
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