Reactive Monomers Derived from p-Vinylbenzoic Acid

Reactive monomers derived from p-vinylbenzoic acid have been prepared which have both a vinyl group and another functional group for addition reaction or condensation reaction. The radical polymerization of these monomers gives high polymers. Monomer reactivity ratios in relation to styrene were obtained for three of these monomers. Plots of Alfrey-Price’s e value vs. Hammett’s σ value show a linear relationship in the case of substituted styrenes. σ values are then estimated by this relation, using e values based on the monomer reactivity ratios. The σ constants assumed for the COCl, (Remark: Graphics omitted.), and NCO substituents are 0.71, 0.64, and 0.27 respectively. These σ values are confirmed by other supporting facts.