%0 Journal Article
%T CHARACTERIZATION OF POLYMER-SUPPORTED RARE EARTH METAL COMPLEXES AND THEIR CATALYTIC ACTIVITY IN POLYMERIZATION OF CONJUGATED DIENES<br>聚合物载体-稀土金属络合物的表征及其催化聚合共轭双烯的活性
%A LI Yu-liang
%A OUYANG Jun
%A <br>李玉良
%A 欧阳均
%J 高分子学报
%D 1988
%I 
%X In this paper linear hydrocarbon copolymers containing certain amount of function groups were used as the support such as styrene-acrylic acid copolymer (SAAC) and styrene-2-(methyl sulfinyl) ethyl methacrylate copolymer (SMC). The preparation of polymer-supported rare earth metal complexes (SAAC·Nd and SMC·LnCls) and their infrared spectra were described.The catalytic system formed from polymer-supported neodymium complexes shows high catalytic activity and stereospecificity for butadiene polymerization. The catalytic efficiency for SMC.NdCl3-Al(i-C4H9)3 system is twice or triple that of NdCl3.4DMSO system. The cata-lytic efficiency of the ternary system,SAAC.Nd-Ph3CCl-Al(i-C4H9)3, reaches up to 170 kg polybutadiene/g. Nd.hr. The cis-1,4 content of polybutadiene is more than 98%. This system was also used for isoprene polymerization. The cis-1,4 content of the polyisoprene obta-ined is about 95%.
%K Butadiene catalyst
%K Polymerization
%K Rare earth
%K Support<br>丁二烯
%K 聚合
%K 稀土
%K 载体催化剂
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=6579068328FE643F&jid=15971983683C7643EE80F1CE621DEB60&aid=AAA71C22A6B8CF39&yid=0702FE8EC3581E51&iid=CA4FD0336C81A37A&sid=7C3A4C1EE6A45749&eid=1AE5323881A5ECDC&journal_id=1000-3304&journal_name=高分子学报&referenced_num=0&reference_num=0