オレフィン系樹脂の製造方法

Japanese Patent JP7011977

B2

SOLUTION: The method for producing an olefin-based resin comprises copolymerizing ethylene with at least one kind of α-olefin selected from 3-12C α-olefins in the presence of a polymerization catalyst including: [A] a transition metal compound of group 4 of the Periodic Table which includes a ligand having a dimethylsilyl bisindenyl skeleton; and [B] a crosslinked metallocene compound having a specific structure in a single reactor to produce an olefin-based resin satisfying requirements (I) to (IV) as given below: (I) the olefin-based resin includes [R1] a graft type olefin-based polymer composed of a main chain and a side chain; (II) the ratio of a repeating unit derived from ethylene is in the range of 50 to 90 mol% based on the total repeating units and the ratio of a repeating unit derived from at least one kind of α-olefin selected from 3-12C α-olefins is in the range of 10 to 50 mol% based on the total repeating units (provided that the total of the repeating unit derived from ethylene and the repeating unit derived from 3-12C α-olefins is 100 mol%); (III) the melting point (Tm) as measured by a differential scanning calorimetry (DSC) analysis is in the range of 0 to 100°C; and (IV) the intrinsic viscosity [η] as measured in decalin at 135°C is in the range of 0.1 to 10 dl/g.EFFECT: According to the present invention, an olefin-based resin including a graft type olefin polymer being an ethylene/α-olefin copolymer whose side chain is amorphous can be directly produced from a monomer by one polymerization process in a single reactor and can be produced in a simple way.SELECTED DRAWING: None

Seiya Kikuchi
Tatsuya Nakamura
Yasushi Yanagimoto
Akio Hayakawa
Eihiro Udagawa

JP2018095273A

February 10, 2022

May 17, 2018

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Mitsui Chemicals, Inc.

C08F4/6592; C08F255/02

JP2007520597A
JP2017025234A
JP2002348336A

Patent corporation ssinpat

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