6533b856fe1ef96bd12b2fef

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A series of copolymers are synthesized by repetitive Diels-Alder polyaddition reaction of bifunctional cyclohepta-1,3,5-trienes with bifunctional 1,2,4-triazoline-3,5-diones. The copolymers of different bistriazolinediones with a bisdiene, or of different biscycloheptatrienes with a dienophile, have good solubility in CH2Cl2 and CHCl3, while the homopolymers are poorly soluble. The copolymers were characterized by standard analytical techniques to test the structural regularity of these systems. Due to the kinetic control, it is possible to apply copolymerization statistics to these systems. Based on a model study, it is concluded that alipatic and aromatic bistriazolinediones have the same reactivity towards ditropyl. Nonstoichiometric polyaddition with a slight excess of bistriazolinedones provides a possibility to prepare telechelics with highly reactive triazolinedione end-groups. The end-group concentration can be checked by UV spectroscopy. These telechelics are efficient bulky blocks to prepare two-component networks with a variety of polydienes.