发明名称 |
CATALYST AND PROCESS FOR POLYMERIZING ALPHA-OLEFINS |
摘要 |
<p>An active catalyst in the polymerization of alpha-olefins is obtained by: (i) bringing a dialkyl magnesium, or an alkyl magnesium halide into contact with a silicon or tin halide, in solution in an inert organic solvent, until a granular solid precipitates off; (ii) suspending said solid precipitate in an inert organic solvent and bringing it into contact with a compound which can be defined by the formula: <CHEM> wherein M represents a metal from Group IVB of the Periodic Table of Elements, and each R and Cp has the meaning as reported in the disclosure, in order to form a granular solid catalyst; and (iii) recovering said solid catalyst from the resulting suspension.</p> |
申请公布号 |
GR3023895(T3) |
申请公布日期 |
1997.09.30 |
申请号 |
GR19970401542T |
申请日期 |
1997.06.26 |
申请人 |
ENICHEM S.P.A. |
发明人 |
MILANI, FEDERICO;LUCIANI, LUCIANO;PIVOTTO, BRUNO;LABIANCO, ANTONIO |
分类号 |
C08F4/658;B01J31/38;C08F4/58;C08F4/60;C08F4/643;C08F4/646;C08F4/654;C08F4/656;C08F4/659;C08F4/6592;C08F10/00;C08F110/02;(IPC1-7):C08F4/656;C08F4/657 |
主分类号 |
C08F4/658 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|