Benzoyl peroxide (BPO) was used for initiator in copolymerization of dibutyltin maleate (DBTM

M2) with methyl acrylate (MA

M1) in benzene and the reactivity ratios of copolymerization r1 and r2 were found to be 12.67 and 0.03

respectively. But in copolymerization of DBTM (M2) with butyl acrylate (BA

M1) r1 and r2 were 11.1 and 0> respectively. The cc-polymerization conditions

such as amount of initiator

ratios of monomers and addition method of initiator were examined. Copolymers were characterized by 1H-NMR

IR

elemental and TG analyses. MA-DBTM copolymer is a white and brittle solid

while BA-DBTM copolymer is a transparent elastomer at room temperature.