Transition metal compound, olefin polymerization catalyst, and olefin polymer production process

Patent metadata

Field	Value
Publication number	US-2016304640-A1
Application number	US-201615195340-A
Country	US
Kind code	A1
Filing date	Jun 28, 2016
Priority date	Sep 25, 2012
Publication date	Oct 20, 2016
Grant date	—

Abstract

[Object] To provide transition metal compounds with excellent catalytic activity which can afford olefin polymers such as propylene polymers that have high stereoregularity and high molecular weight and may be easily crystallized into β-phase.
[Solution] The transition metal compound is represented by General Formula [I] or is an enantiomer thereof:

[in Formula [I], R 1 , R 3 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , R 12 , R 13 , R 14 , R 15 and R 16 are each independently a hydrogen atom, a hydrocarbon group, a hetero atom-containing hydrocarbon group, or a silicon-containing group; R 2 is a hydrocarbon group, a hetero atom-containing hydrocarbon group, or a silicon-containing group; R 4 is a hydrogen atom; any two substituents of the substituents R 1 to R 16 except R 4 may be bonded to each other to form a ring; M is a Group IV transition metal; Q is a structure such as a halogen atom; and j is an integer of 1 to 4].

First claim

1 - 13 . (canceled)

14 . A propylene polymer having a meso pentad fraction of 97.0% to 99.5% and a total fraction of 2,1-insertions and 1,3-insertions of propylene monomers of 0.01 mol % to 0.06 mol % relative to all propylene-derived structural units as measured by 13 C-NMR.

15 . A shaped article comprising the propylene polymer described in claim 14 .

16 . The propylene polymer according to claim 14 , which shows one or more melting peaks assigned to α-phases in the range of 160° C. or more, and also shows one or more melting peaks assigned to β-phases in the range of 140° C. to less than 160° C.

17 . A shaped article comprising the propylene polymer described in claim 16 .

Assignees

• Mitsui Chemicals Inc

Inventors

• Funaya Munehito

Classifications

• C08F4/65912

  in combination with an organoaluminium compound · CPC title

• C08F110/06 Primary

  Propene · CPC title

• C08F4/6592

  containing at least one cyclopentadienyl ring, condensed or not, e.g. an indenyl or a fluorenyl ring · CPC title

• C08F4/65927

  two cyclopentadienyl rings being mutually bridged · CPC title

• C07F17/00 Primary

  Metallocenes · CPC title