Title:
【発明の名称】エチレン重合体の製法
Document Type and Number:
Japanese Patent JP2777828
Kind Code:
B2
Abstract:
Ethylene homopolymers and ethylene copolymers with alpha-(C3-C10)-olefins are obtained by polymerizing the monomers with a polymerization catalyst formed by: a) an alkyl-aluminum; and b) a modified solid catalyst component obtained by treating with a Lewis' base a non-modified solid component to be defined by means of the following formula, expressed as atomic proportions: Ti (1), Hf (0.5-3), Si (1-6), Mg (0.5-15) Al (0,5-15), X (20-60), ROH (1-10) wherein: X represents either chlorine and bromine, and R represents an either linear or branched alkyl radical of from 1 to 6 carbon atoms. The catalyst is particularly useful for controlling the molecular weight and the molecular weight distribution of ethylene homopolymers and copolymers.
Inventors:
FURANCHESUKO CHIARUDEERI
FURANCHESUKO MAAJI
SUTEFUAANO MARUKOORI
CHEZAARE FUEREERO
RIA BARATSUZOONI
FURANCHESUKO MENKOONI
ANZERO MOAARI
RENZO INBERUNITSUJI
FURANCHESUKO MAAJI
SUTEFUAANO MARUKOORI
CHEZAARE FUEREERO
RIA BARATSUZOONI
FURANCHESUKO MENKOONI
ANZERO MOAARI
RENZO INBERUNITSUJI
Application Number:
JP25251189A
Publication Date:
July 23, 1998
Filing Date:
September 29, 1989
Export Citation:
Assignee:
ENIIKEMU ANITSUKU SPA
International Classes:
C08F4/60; C08F4/656; C08F4/6592; C08F4/658; C08F10/00; C08F10/02; (IPC1-7): C08F4/658; C08F10/02
Domestic Patent References:
| JP60101104A |
Attorney, Agent or Firm:
Asakura Shozo