Process for producing olefin polymer and olefin polymer

Patent metadata

Field	Value
Publication number	US-2016376385-A1
Application number	US-201615195426-A
Country	US
Kind code	A1
Filing date	Jun 28, 2016
Priority date	Sep 25, 2012
Publication date	Dec 29, 2016
Grant date	—

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

1 - 12 . (canceled)

13 . A 1-butene polymer which has a meso pentad fraction as measured by 13 C-NMR of 98.0% to 99.8%.

14 . The 1-butene polymer according to claim 13 , wherein the accumulated elution amount at a temperature [T X ] is 40% by weight or more relative to the whole elution amount as measured by cross fractionation chromatography (CFC) using o-dichlorobenzene as an eluent, provided that [T X ] is defined as ([T S ]+[T E ])/2 wherein [T S ] is an elution start temperature (a temperature at which the accumulated elution weight percent reaches 0.5% by weight), and [T E ] is an elution end temperature (a temperature at which the accumulated elution weight percent reaches 99% by weight).

15 . A 4-methyl-1-pentene polymer fulfilling the following requirements (a) to (c):
(a) the amount of constituent units derived from 4-methyl-1-pentene is 100 to 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 0 to 20 mol %; (b) the meso diad fraction (m) as measured by 13 C-NMR is 98.5% to 100%; and (c) the heat of fusion ΔHm (unit: J/g) and the melting point Tm (unit: ° C.) as measured by Differential Scanning calorimetry (DSC) fulfill the following relation (1):
Δ Hm≧ 0.5× Tm− 76.  Relation (1)

16 . 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

• C08F10/00

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

• C08F10/08

  Butenes · CPC title

• C08F236/08

  Isoprene · CPC title

• C08F110/14 Primary

  Monomers containing five or more carbon atoms · CPC title

• C08F4/65912

  in combination with an organoaluminium compound · CPC title