以环氧氯丙烷(1)和1,1,2,2-四氢十三氟辛醇(2)为原料,通过亲核取代反应制得1,1,2,2-四氢十三氟辛氧基环氧丙烷(3)；3在BF3· Et2O催化下发生阳离子开环聚合,合成了一种新型含氟聚醚——聚(1,1,2,2-四氢十三氟辛氧基环氧丙烷)(4),其结构经1H NMR和IR表征.合成3的最佳反应条件为:2 65 mmol,n(1)∶n(2)=3∶2,于70℃反应18 h.控制n(3)∶n(BF3·Et2O) =25∶1进行开环聚合,4的分子量为1400.%2-[(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyloxy)methyl]oxirane(3) was prepared by the nucleophilic substitution reaction of epichlorohydrin(l) with 1,1,2,2-tetrahydroperfluo-ro-l-octanol(2). Poly12-[ (3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyloxy)methyl] oxirane| (4) was synthesized by ring-opening polymerization of 3 using boron trifluoride etherate as the initiator. The structures were characterized by 1H NMR and IR. The optimal reaction conditions for synthesizing of 3 were as follows: 2 was 65 mmol,n(l):n(2) was 3:2,reaction temperature was 70℃ and reaction time was 18 h. The molecular weight of 4 was 1 400 when n(3): n( BF3 · Et2O) was 25 · 1 in the process of ring-opening polymerization.
展开▼
