发明公开
EP0574153A1 Process for preparing ultra-high molecular weight polyethylene 失效
维生素Zur Herstellung von ultrahochmolekularem聚乙烯。

Process for preparing ultra-high molecular weight polyethylene
摘要:
According to the present invention there is provided a process for preparing an ultra-high molecular weight polyethylene superior in fluidity, having a high bulk density, a small average particle diameter and a narrow particle size distribution and substantially free from formation of coarse particles.
In a process for preparing an ultra-high molecular weight polyethylene, using a catalyst comprising a solid catalyst component and an organometallic compound, there is used as the said solid catalyst component a material obtained by contacting the following components [A] and [B] with each other:

[A] a reaction product resulting from the reaction of a magnesium halide and a compound of the general formula Ti(OR¹ )₄ where R¹ is a hydrocarbon residue having 1 to 20 carbon atoms; and
[B] a reaction product resulting from the reaction of an aluminum halide and a compound of the general formula R²OR³ where R² and R³, which may be the same or different, are each a hydrocarbon group having 1 to 20 carbon atoms.
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