Process for preparing polymeric oxetanes using hydrocarbonaluminum chelates as catalysts

Claim 1

THE PROCESS OF PREPARING POLYMERIC OXETANES WHICH COMPRISES POLYMERIZING A MONOMERIC OXETANE BY CONTACTING SAID MONOMERIC OXETANE AT A TEMPERATURE FROM ABOUT -50*C. TO ABOUT 300*C. WITH, AS THE CATALYST FOR THE POLYMERIZATION REACTION, A REACTION PRODUCTION FORMED BY REACTING A HYDROCARBONALUMINUM COMPOUND OF THE GROUP CONSISTING OF TRIHYDROCARBONALUMINUM IN WHICH THE HYDROCARBON RADICAL IS SELECTED FROM THE GROUP CONSISTING OF ALKYL, ALKENYL, CYCLOALKYL AND ARYL RADICALS, AND DIHYDROCARBONALUMINUM HYDRIDE IN WHICH THE HYDROCARBON RADICAL IS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND CYCLOAKYL RADICALS, WITH FROM ABOUT 0.01 MOLE TO ABOUT 2 MOLES OF A CHELATING AGENT PER MOLE OF SAID HYDROCARBONALUMINUM COMPOUND, SAID REACTION PRODUCT BEING PRESENT IN A CATALYTIC AMOUNT FROM ABOUT 10 P.P.M. TO ABOUT 100,000 P.P.M. BY WEIGHT OF SAID OXETANE SUFFICIENT TO CATALYZE POLYMERIZATION OF SAID OXETANE MONOMER TO A POLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 10,000, SAID RFEACTION PRODUCT BEING CHARACTERIZED BY THE FOLLOWING GRAPHIC FORMULA: