POLYMERIZATION OF METHYL AND PHENYL OXAZOLINE INITIATED WITH CARBOXYLIC-ACID CHLORIDES

Methyl and phenyl oxazoline were polymerized using carboxylic acid chl orides as initiators. The first step of the reaction was shown to cons ist in a fast reaction of the carboxylic acid chloride with the oxazol ine. Resulting product, which was isolated and identified, act as the proper initiator of the polymerization of the oxazoline, which proceed s via covalent or, when chloride counter ion is replaced with iodide o r triflate, ionic active species. Apparent rate constants of the chain growth were determined. When methacryloyl chloride is used as initiat or macromonomers are obtained, which were copolymerized with styrene. Macromolecular carboxylic acid chlorides initiate the polymerization o f oxazolines, yielding graft polymers.