三异丁基铝体系催化硝基环氧丙烷的聚合反应

三异丁基铝体系催化硝基环氧丙烷的聚合反应 CATALYTIC BEHAVIOR OF （i-Bu） 3 Al SYSTEMS IN THE POLYMERIZATION OF 3-NITROPROPENE-1, 2-EPOXIDE AND GLYCIDYL NITRATE 徐羽梧 first-author 汪文学 王洪祚 邓可喜 黄新华 曾泽夫 本工作用三种不同的三异丁基铝催化体系[即三异丁基铝——乙醚——水（Ⅰ）;三异丁基铝——磷酸——水（Ⅱ）;三异丁基铝——磷酸——N,N-二甲基苯胺（Ⅲ）]进行了硝基环氧丙烷和甘油内醚硝酸酯（即缩水甘油基硝酸酯）的聚合和共聚合反应。实验结果表明:上述三异丁基铝催化体系均能引发硝基环氧丙烷的均聚合,但不能引发硝基环氧丙烷与四氢呋喃的共聚合。对于甘油内醚硝酸酯,（Ⅰ）和（Ⅱ）均难引发其聚合。（Ⅲ）虽能引发其聚合,但速度慢,产率低。三异丁基铝这些催化性能与三氟化硼——醇体系比较,有很大的差别。 Three kinds of （i-Bu） 3 Al catalytic systems [（i-Bu） 3 Al—Et 2 O—H 2 O（Ⅰ）, （i-Bu） 3 Al—H 3 PO 4 —H 2 O（Ⅱ）, （i-Bu） 3 Al—H 3 PO 4 —（CH 3 ） 2 NC 6 H 5 （Ⅲ）] were used as catalysts in the polymerization of the 3-nitropropene 1, 2-epoxide （monomer 1） and glycidyl nitrate（monomer2） as well as copolymerization of monomer 1 and 2 with tetrahydrofuran （monomer3） respectively. It is found that all of these three catalytic systems are effective for homopolymerization of monomer 1, but not for copolymerization of monomer 1 with 3. The activity of these three catalysts was found in following sequence: Ⅲ > Ⅰ > Ⅱ. On the other handy catalytic systems Ⅰ and Ⅱ are very difficult to initiate the polymerization of monomer 2, but which can be initiated by system Ⅲ although the polymerization rate is rather slow. In a word, the catalytic behavior of（i-Bu） 3 Al system is quite different from that of BF 3 Et 2 O system in the polymerization of epoxide compounds containing nitro group. 1987-01-01 2021-04-01 1