THEORETICAL-STUDY OF CHAIN TRANSFER IN ANIONIC-POLYMERIZATION .2. COPOLYMERIZATION ACCOMPANIED BY CHAIN TRANSFER TO SOLVENT

The main factors determining molar mass characteristics of copolymers formed in non-terminating copolymerization under the conditions of cha in transfer to solvent are studied theoretically. The dependences of t he mean polymerization degrees on conversion and monomer feed composit ion for various values of reactivity ratios are obtained. The results obtained greatly differ from those for homopolymerization. This is exp lained by the contribution of cross-propagation reactions. In particul ar, it is shown that at r1 much less than 1 and r2 much less than 1 th e azeotropic copolymerization proceeds like the living one even if hom opolymerization of each monomer is accompanied by extensive chain tran sfer to solvent.