SYNTHESIS AND CHARACTERIZATION OF N-SUBSTITUTED 1,4,5,6-TETRAHYDROPYRIMIDINE CONTAINING FUNCTIONAL POLYMERS AS SO2 AND CO2 SORBENTS

Novel vinyl monomers containing 1,4,5,6-tetrahydropyrimidine were prep ared by the reaction of N-substituted-1,3-diaminopropane with N,N-dime thyl-formamide dimethylacetal, which gave l-alkyl or aryl substituted 1,4,5,6-tetrahydropyrimidines, Alkylation of the tetrahydropyrimidine derivatives by chloromethylstyrene produces the N-methyl-N'-vinyl benz yl-1,4,5,6-tetrahydropyrimidinium chloride in high yields, These monom ers were readily polymerized in dimethylformamide by AIBN at 80 degree s C. Homopolymers and soluble linear copolymers were prepared and copo lymerization parameters were rationalized. Further, insoluble terpolym ers prepared from these monomers, styrene and divinylbenzene were test ed for the sorption of the weakly acidic gases gave excellent results. (C) 1997 John Wiley & Sons, Inc.