Copolymers were prepared by using methylmethacrylat e (MMA) and 4-{[4-chlorophenyl) imino] methyl} ph enyl-2- methacrylate (MSB). The MSB monomer was synthesized using 4-[(1E)-2-aza-2-(4-chloro phenyl vinyl] phen ol (SB) and methacryloylchloride. Homo and copolymers of MS B and methylmethacrylate were obtained with differe nt feed ratios using N-N-di-methylformamide (DMF) as a solv ent and 2-2’-azobis isobytyronitrile (AIBN) as an i nitiator at 70 ° C. IR Spectroscopy was employed to characterize the polymers thus obtained. The composition of the copolymers was found from proton NMR data. The MSB and MMA reactivity ratios were determined by applyi ng the conversional linearization methods, of Fineman- Ross and Kelen-Tudos. The values of reactivity rati os obtained by above methods are comparable. Gel Permeation Ch romatography (GPC) was used to determine average molecular weights and polydispersity of copolymers. Homo and copolymers were characterized for their t hermal properties using Thermogravimetry (TG) and Differen tial thermal analysis (DTA). All polymers were test ed for their antimicrobial properties against various microorgan isms.