Process for producing olefin polymer and olefin polymer

Patent metadata

Field	Value
Publication number	US-9896526-B2
Application number	US-201615195426-A
Country	US
Kind code	B2
Filing date	Jun 28, 2016
Priority date	Sep 25, 2012
Publication date	Feb 20, 2018
Grant date	Feb 20, 2018

Abstract

[Problem to be solved]
There is provided a process for producing an olefin polymer that is capable of producing an olefin polymer having high heat resistance and high molecular weight with excellent catalytic activity.
[Solution to problem]
The process for producing an olefin polymer includes a step of polymerizing at least one olefin selected from ethylene and α-olefins having 4 to 30 carbon atoms in the presence of an olefin polymerization catalyst containing a transition metal compound represented by the general formula [I], the olefin polymer including constituent units derived from ethylene and α-olefins having 4 to 30 carbon atoms in a total amount between more than 50 mol % and not more than 100 mol %,

[in the formula [I], R 1 , R 3 and R 5 to R 16 are each independently a hydrogen atom, a hydrocarbon group or the like; R 2 is a hydrocarbon group or the like; R 4 is a hydrogen atom; M is a transition metal of Group IV; Q is a halogen atom or the like; and j is an integer of 1 to 4].

First claim

The invention claimed is:

1. A 4-methyl-1-pentene polymer fulfilling the following requirements (d) to (f):
(d) the amount of constituent units derived from 4-methyl-1-pentene is more than 50 mol % and less than 80 mol %, and the amount of constituent units derived from at least one selected from olefins having 2 to 30 carbon atoms (except 4-methyl-1-pentene) is more than 20 mol % and less than 50 mol %;
(e) the meso diad fraction (m) as measured by 13 C-NMR is 98.5% to 100%; and
(f) the melting point Tm as measured by Differential Scanning Calorimetry (DSC) is lower than 100° C. or is substantially absent.

Assignees

• Mitsui Chemicals Inc

Inventors

• Funaya Munehito
• Sakuma Atsushi
• Ebisawa Ikuko
• Kinoshita Shinsuke
• Matsumoto Akiko
• Tanaka Hirokazu
• Tanaka Shinya

Classifications

• C08F236/08

  Isoprene · CPC title

• C08F10/00

  Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond · CPC title

• C08F136/08

  Isoprene · CPC title

• C08F10/08

  Butenes · CPC title

• C08F110/04

  Monomers containing three or four carbon atoms · CPC title