公开(公告)号：US5066741A

公开(公告)日：1991-11-19

申请号：US559475

申请日：1990-07-30

申请人： Richard E. Campbell, Jr.

发明人： Richard E. Campbell, Jr.

IPC分类号： C08F4/76 ,  C08F10/00 ,  C08F12/04

CPC分类号： C08F12/04 ,  C08F4/6592 ,  Y10S526/943

摘要： A process for preparing syndiotactic vinyl aromatic polymers comprising contacting one or more aromatic monomers under polymerization conditions with a catalyst corresponding to the formula:[Cp.sub.m MX.sub.n X'.sub.p ].sup.+ A.sup.-wherein:Cp is a single .eta..sup.5 -cyclopentadienyl or .eta..sup.5 -substituted cyclopentadienyl group;M is a metal of Group 3, 4, 5, 6, 8, 9, 10 or the Lanthanide Series of the Periodic Table;X each occurrence is an inert anionic ligand, with the proviso that at least one X is R;X' is an inert, neutral, donor ligand;R is hydride hydrocarbyl, silyl, a combination thereof or a substituted derivative thereof having up to 20 carbon, silicon or carbon and silicon atoms;m and p are independently 0 or 1;n is an integer greater than or equal to 1;the sum of m and n is equal to the valence of M; andA.sup.- is a noncoordinating, compatible anion of a Bronsted acid salt.

摘要翻译： 一种制备间规乙烯基芳族聚合物的方法，包括在聚合条件下使一种或多种芳族单体与对应于下式的催化剂接触：[CpmMXnX'p] + A-其中：Cp是单个η5-环戊二烯基或η5-取代的环戊二烯基 组; M是第3,4,5,6,8,9,10族金属或周期表的镧系元素; 每次出现X为惰性阴离子配体，条件是至少一个X为R; X'是惰性的，中性的供体配体; R是氢化烃基，甲硅烷基，它们的组合或其具有至多20个碳，硅或碳和硅原子的取代衍生物; m和p独立地为0或1; n是大于或等于1的整数; m和n的和等于M的化合价; 而A-是布朗斯台德酸盐的非配位相容阴离子。