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6607551 
Journal Article 
Reactivities of dialkyl mesaconates in the radical copolymerizations with styrene 
Oishi, T 
1981 
45 
1 
245-256 
INSPEC:1844901 
In order to clarify the effect of the alkyl groups in dialkyl mesaconates (DRM) on their reactivities toward an attack of a radical, the copolymerization of DRM (M1) with styrene (M2) has been carried out at 60degC. From the results obtained, the monomer reactivity ratios (r1, r2) and the Q1 and e1 values were determined. The relative reactivities (1/r2) of DRM toward an attack by a polystyryl radical were correlated only by the polar substituent constant (sigma*) of the alkyl group in DRM, but not by the steric substituent constant (Es) in Taft's equation: log (1/r2)=rho*sigma*+deltaEs. According to the equation, the rho* and sigma values obtained were 0.66 and 0, respectively. The Q1 and e1 values for DRM were correlated by Taft's sigma*-constant.