Title:
PRODUCTION OF CYCLOOLEFIN COPOLYMER
Document Type and Number:
Japanese Patent JP3416244
Kind Code:
B2
Abstract:
PURPOSE: To produce a transparent cycloolefin copolymer having a high tensile strength by copolymerizing a polycyclic olefin and ethylene in the presence of a catalyst comprising a specific asymmetric metallocene and a cocatalyst.
CONSTITUTION: Based on the total monomers, 0.1-99.9 wt.% polycyclic olefin [e.g. one of formula II or III (wherein R1 to R4 are each H or a hydrocarbon group), 0-99.9 wt.% cycloolefin of formula IV (wherein (n) is 2-10), 0.1-99.9 wt.% ethylene, and 0-99.9 wt.% acyclic 1-olefin of formula V (wherein R9 to R12 are each R1) are copolymerized at 20-150°C and 0.01-64 bar in the presence of a catalyst comprising a metallocene of formula I [wherein M1 is Ti, Zr, or the like; R14 and R15 are each H, a halogen, or the like; R16 is cyclopentadienyl; R17 is indenyl; and R18 is Ge, =CO, or the like) [pref. dichloroisopropylene-(1-indenyl)cyclopentadienylzirconium] and a cocatalyst (pref. an aluminoxane).
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Inventors:
Michael Aurbach
Michael-Joachim Breckner
Frank Cuber
Frank Osan
Thomas veller
Jurgen Rollman
Michael-Joachim Breckner
Frank Cuber
Frank Osan
Thomas veller
Jurgen Rollman
Application Number:
JP1654194A
Publication Date:
June 16, 2003
Filing Date:
February 10, 1994
Export Citation:
Assignee:
Tikona Gezel Shaft Mitt Beschlenktel Haftungu
International Classes:
C08F4/642; C08F4/60; C08F4/659; C08F4/6592; C08F4/76; C08F4/80; C08F32/00; C08F210/00; C08F210/02; C08F232/08; (IPC1-7): C08F232/08; C08F4/642; C08F4/76; C08F210/00
Domestic Patent References:
| JP345612A | ||||
| JP6271627A |
Attorney, Agent or Firm:
Kazuo Shamoto (5 outside)