Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
MANUFACTURING METHOD FOR NORBORNENE BASED COPOLYMER
Document Type and Number:
Japanese Patent JP2011225632
Kind Code:
A
Abstract:

To provide a norbornene based copolymer with a high molecular weight being excellent in transparency, heat-resistance, low absorptivity and an electric insulation property.

The manufacturing method for the specific norbornene based copolymer containing a monomer unit in which one methylene chain is introduced between a norbornene skeleton and an ester group is characterized in that polymerization is performed using a catalyst system comprising an anionic hydrocarbon, a main catalyst represented by [M(K)(L1)(L2)]n comprising a transition metal compound making a neutral ligand including an element of Group 15 of the periodic table and a negative electron-donative ligand as constitution elements, and a cocatalyst comprising an ionic compound capable of producing a cationic transition metal compound by reacting it with the main catalyst.


Inventors:
FUJIBE SATOSHI
KIBINO NOBUYUKI
Application Number:
JP2010093670A
Publication Date:
November 10, 2011
Filing Date:
April 15, 2010
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
SHOWA DENKO KK
International Classes:
C08F232/08; C08F4/70
Attorney, Agent or Firm:
Kunihisa Landlord
Atsushi Hayashi