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用 Fe(acac) 3- Al(i- Bu) 3- α,α′-联吡啶 (acac=乙酰丙酮 )催化邻苯二甲酸酐 (PA)与环氧丙烷 (PO)、邻苯二甲酸酐与环氧氯丙烷 (ECH)开环交替共聚 .研究了 Fe/Al、Fe/α,α′-联吡啶摩尔比对聚合的影响 ;用核磁共振技术研究了共聚物的交替度 ,测得共聚物中邻苯二甲酸酐含量达 46 %以上 .共聚反应动力学研究表明 ,共聚反应速度与单体浓度及催化剂浓度均呈一级关系 ;PA- PO、PA- ECH的表观活化能分别为 10 9.3和 99.7k J/mol
Catalytic synthesis of phthalic anhydride (PA) with propylene oxide (PO) using Fe (acac) 3-Al (i-Bu) 3- α, α’- bipyridine (acac = acetylacetone), phthalic anhydride And ring-opening copolymerization with epichlorohydrin (ECH) .The influence of Fe / Al, Fe / α, α’-bipyridyl molar ratio on the polymerization was studied.The alternating degree of copolymer was studied by using nuclear magnetic resonance Phthalic anhydride content of more than 46% .Polymerization kinetics studies have shown that the copolymerization reaction rate and monomer concentration and catalyst concentration showed a first-order relationship; PA-PO, PA-ECH apparent activation energy was 10 9.3 and 99.7 k J / mol