摘要
报道了用MCM 41负载异丙醇合三氯化钕(NdCl3·3i C3H7OH)的稀土催化剂,催化异戊二烯(Ip)聚合。发现MCM 41负载NdCl3·3i C3H7OH催化剂对Ip有良好的催化活性,而且聚合物重均相对分子质量( MW)高、分子质量分布( MW/ Mn)窄、cis-1,4含量高。其有利的聚合条件是:三异丁基铝(Ali Bu3)为助催化剂;n(Al)/n(Nd)=80;n(Ip)/n(Nd)=1000;聚合温度为50℃;甲苯作溶剂;聚合时间为6h。
The polymerization of isoprene(Ip) catalyzed by NdCl_3·3i-C_3H_7OH rare earth catalyst supported on MCM-41 has been investigated for the first time.It was found that supported on the MCM-41,the NdCl_3·3i-C_3H_7OH rare earth catalyst has high activity for the polymerization,giving high molecular weight polyisoprene with a narrow molecular weight distribution and high cis-1,4content.The optimum polymerization conditions are:n(Al)/n(Nd)=80,(n)Ip/n(Nd)=1000,polymerization time:6 hours,polymerization temperature:50℃,solvent:toluene,cocatalyst:Ali-Bu_3.
出处
《弹性体》
CAS
2005年第2期1-4,共4页
China Elastomerics
基金
国家自然科学基金重点项目(20434020)
