Preparation of ethylene copolymer

Abstract

Abstract PURPOSE:To obtain the titled low-density copolymer in good productivity, by using a catalyst consisting of a solid catalyst component obtained by treating a reaction product of a specific Mg compound, Ti compound, Si compound, and Al halide with a titanium tetrahalide and a specified organometallic compound. CONSTITUTION:Ethylene is copolymerized with >=3C alpha-olefin at a temperature <=the melting point of a copolymer in the presence of a catalyst consisting of (A) a solid catalyst component obtained by reacting a reaction product of at least one of metal magnesium and an organic hydroxide compound, an oxygen- containing organomagnesium compound, and a halogen-containing magnesium compound, at least one of an oxygen-containing organotitanium compound and an oxygen -containing organovanadium compound, and at least one silicon compound with an aluminum halide compound to give a solid component, followed by treating the solid component with a titanium tetrahalide compound, and (B) at least one of organometallic compounds of metals of I a, IIa, IIb, IIIb, and IVb group of periodic table, to give the desired copolymer having 0.900-0.945g/cm<2> density.

Inventors

• 👤 Yozo Kondo
• 👤 近藤　陽三
• 👤 Mitsuhiro Mori
• 👤 森　充博
• 👤 Yoshiaki Kano
• 👤 加納　芳明
• 👤 Yutaka Naito
• 👤 豊 内藤

Bibliographic Details