二炔烃一步法合成高支化聚芳烃树脂的研究

One-step Synthesis of Hyperbranched Polyarylate Resins from Diyne

以五氯化钽和四苯基锡为催化剂,通过二炔烃的环三聚反应一步法合成了一系列高支化的聚芳烃树脂;为改善均聚物的可溶性,引入了二炔单体与苯乙炔。IR和1H NMR谱图分析证实通过[2+2+2]环三聚机理形成了目标产物。同时研究了单体种类、单体催化剂比例、催化剂陈化时间、反应温度和反应时间对树脂结构和热性能的影响。

We worked on the one-step synthesis of hyperbranched polyarylate resins through the homo-and copolyeyclotrimerizations of diynes and monoynes initiated by tantalum -based catalysts, with the aim of exploring new synthetic routes to hyperbranched polyarylate resins. A group of hyperbranched poly（alkylenephenylenes） （hb-PAPs） were synthesized by TaBrs-Ph_4Sn catalyzed polycyclotrimerization of 1, 7-octadiyne. To improve the solubility of the homopolymers, the diyne monomers were copolymerized with ph Spectrum confirmed that the target polymers had formed via mechanism. The kind of monomer, the catalyst monomer ratio, perature and reaction time on the resin structure and thermal pr enylacetylene. IR, and 1H NMR a [-2 ＋ 2 ＋ 2 ] cyclotrimerization the catalyst aging, reaction tern- operties were investigated.