Title:
METHOD FOR PRODUCING CYCLIC OLEFIN COPOLYMER
Document Type and Number:
Japanese Patent JP2015221874
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method for producing a copolymer, which enables a copolymer having excellent mechanical characteristics and having a molecular weight suitable for usual fabrication to be obtained with less amount of a catalyst in better yield.SOLUTION: The method for producing a copolymer comprises a polymerization process of polymerizing at least a cyclic olefin monomer (A) derived from norbornene and an α-olefin monomer (B) derived from C4 to C12 α-olefins in the presence of a non-crosslinked ketimide-type half-titanocene catalyst and a cocatalyst comprising an alkylaluminoxane to obtain a copolymer. An amount of the copolymer obtained in the polymerization process is 1000 g or more per 1 g of the half-titanocene catalyst, and a number average molecular weight of the copolymer is 20,000 or more and 200,000 or less.
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Inventors:
YAEGASHI NORIYUKI
SUZUKI TAKESHI
OKANO YOSHIMICHI
SUZUKI TAKESHI
OKANO YOSHIMICHI
Application Number:
JP2014107145A
Publication Date:
December 10, 2015
Filing Date:
May 23, 2014
Export Citation:
Assignee:
POLYPLASTICS CO
DAICEL CORP
DAICEL CORP
International Classes:
C08F232/00; C08F4/76
Domestic Patent References:
| JP2007063409A | 2007-03-15 | |||
| JP2007521371A | 2007-08-02 | |||
| JP2001516776A | 2001-10-02 | |||
| JP2005517747A | 2005-06-16 | |||
| JP2002284812A | 2002-10-03 | |||
| JP2004527608A | 2004-09-09 | |||
| JP2000302811A | 2000-10-31 |
Attorney, Agent or Firm:
Masayuki Masabayashi
Hayashi Ichiyoshi
Hayashi Ichiyoshi