Title:
PROCESS FOR PRODUCTION OF SYNDIOTACTIC α-OLEFIN POLYMER
Document Type and Number:
WIPO Patent Application WO/2011/078054
Kind Code:
A1
Abstract:
Provided is a process by which a syndiotactic α-olefin polymer having a high racemic dyad fraction and a high molecular weight can be produced with excellent polymerization activity by means of a method that permits high-temperature polymerization. A process for the production of a syndiotactic α-olefin polymer by polymerizing a monomer component that comprises both at least one C3-10 α-olefin and a small amount of ethylene in the presence of an olefin polymerization catalyst which comprises (A) a transition metal compound represented by general formula [1] and (B) at least one compound selected from among (b-1) an organoaluminum oxy compound, (b-2) a compound that reacts with the transition metal compound (A) to form an ion pair, and (b-3) an organoaluminum compound, characterized by satisfying the relationship: 0.001 ≤ PE/PO ≤ 0.030 [wherein PE and PO represent respectively the molar amounts of ethylene and C3-10 α-olefin which are fed into a polymerizer under the condition of polymerization temperature of 25°C or higher].
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Inventors:
YAMAMOTO MASAYOSHI (JP)
YUKITA TAKASHI (JP)
YAMASHITA MASAHIRO (JP)
KANEYOSHI HIROMU (JP)
YUKITA TAKASHI (JP)
YAMASHITA MASAHIRO (JP)
KANEYOSHI HIROMU (JP)
Application Number:
PCT/JP2010/072659
Publication Date:
June 30, 2011
Filing Date:
December 16, 2010
Export Citation:
Assignee:
MITSUI CHEMICALS INC (JP)
YAMAMOTO MASAYOSHI (JP)
YUKITA TAKASHI (JP)
YAMASHITA MASAHIRO (JP)
KANEYOSHI HIROMU (JP)
YAMAMOTO MASAYOSHI (JP)
YUKITA TAKASHI (JP)
YAMASHITA MASAHIRO (JP)
KANEYOSHI HIROMU (JP)
International Classes:
C08F4/6592; C08F10/00
Domestic Patent References:
| WO2008059974A1 | 2008-05-22 | |||
| WO2006123759A1 | 2006-11-23 | |||
| WO2001027124A1 | 2001-04-19 | |||
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Other References:
See also references of EP 2518089A4
MACROMOL. CHEM., .RAPID COMMUN., vol. 14, 1993, pages 97
POLYMER, vol. 30, 1989, pages 1350
J.AM.CHEM.SOC., vol. 110, 1988, pages 6255
MACROMOLECULES, vol. 26, 1993, pages 5711
MACROMOLECULES, vol. 15, 1982, pages 1150
MACROMOL. CHEM., .RAPID COMMUN., vol. 14, 1993, pages 97
POLYMER, vol. 30, 1989, pages 1350
J.AM.CHEM.SOC., vol. 110, 1988, pages 6255
MACROMOLECULES, vol. 26, 1993, pages 5711
MACROMOLECULES, vol. 15, 1982, pages 1150
Attorney, Agent or Firm:
SSINPAT PATENT FIRM (JP)
Patent business corporation SSINPAT (JP)
Patent business corporation SSINPAT (JP)
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