申请人:Bayer Aktiengesellschaft
公开号:US06174974B1
公开(公告)日:2001-01-16
Thermoplastic elastomers can be prepared by (co)polymerization of monomers from the group consisting of C2-C8-&agr;-olefins, C4-C15-diolefins and other monomers in the bulk, solution, slurry or gas phase, the catalysts employed being metallocene compounds or the &pgr; complex compounds of the formulae
in which
CpI and CpII represent carbanions having a cyclopentadienyl-containing structure,
&pgr;I and &pgr;II represent charged or electrically neutral &pgr; systems,
D represents a donor atom and
A represents an acceptor atom,
where D and A are linked by a reversible coordinate bond such that the donor group assumes a positive (part) charge and the acceptor group assumes a negative (part) charge,
M represents a transition metal of sub-group III, IV, V or VI of the Periodic Table of the Elements (Mendeleev), including the lanthanides and actinides,
X denotes one anion equivalent and
n denotes the number zero, one, two, three or four, depending on the charge of M.
热塑性弹性体可以通过使用C2-C8的α-烯烃,C4-C15的二烯烃和其他单体的块状、溶液、浆状或气相(共)聚合制备,所使用的催化剂为金属茂化合物或式中CpI和CpII代表具有环戊二烯基结构的负离子,&pgr;I和&pgr;II代表带电或电中性的&pgr;系统,D代表给体原子,A代表受体原子,其中D和A通过可逆配位键连接,使给体基团呈正(部分)电荷,受体基团呈负(部分)电荷,M代表元素周期表(门捷列夫)的III、IV、V或VI族的过渡金属,包括镧系和锕系元素,X表示一个阴离子当量,n表示M的电荷数为零、一、二、三或四,具体取决于M的电荷。