发明名称 |
Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure |
摘要 |
<p>Process for the preparation of crystalline vinylaromatic polymers with a predominantly syndiotactic structure which comprises polymerizing the vinylaromatic monomers in the presence of a catalytic system consisting essentially of: a) a complex of titanium having the formula (I): Ti(OCONRR')n wherein R and R', the same or different, represent a C1-C12 aliphatic radical or C6-C12 aromatic radical whereas n is an integer equal to 3 or 4; b) a cocatalyst selected from aluminoxane and a compound of boron having formula (II): BX1X2X3 wherein X1, X2 and X3, the same or different, represent a C1-C20 perfluorinated hydrocarbon radical.</p> |
申请公布号 |
EP0751154(B1) |
申请公布日期 |
1998.12.02 |
申请号 |
EP19960108077 |
申请日期 |
1996.05.21 |
申请人 |
ENICHEM S.P.A. |
发明人 |
CARDI, NICOLETTA;PO', RICCARDO;SANTI, ROBERTO;COMETTI, GIUSEPPE |
分类号 |
C08F4/642;C08F4/60;C08F4/643;C08F4/646;C08F12/04;C08F12/06;C08F12/08;C08F212/00;(IPC1-7):C08F12/04 |
主分类号 |
C08F4/642 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|