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Title:
METHOD FOR RECOVERING POLYCARBONATE POLYMERIZATION CATALYST
Document Type and Number:
Japanese Patent JP2011195634
Kind Code:
A
Abstract:

To provide an easy method for recovering a polycarbonate polymerization catalyst.

In the method for recovering a dissolved polymerization catalyst used in the copolymerization of an epoxide compound and carbon dioxide in a solution in a method for producing polycarbonate by the copolymerization, the polymerization catalyst contains a conjugated diene moiety or a dienophile moiety, and an insoluble granular carrier correspondingly containing a dienophile moiety or a conjugated diene moiety on the surface thereof is introduced into the solution containing the polymerization catalyst, the polymerization catalyst is fixed in the insoluble granular carrier by the Diels-Alder reaction, and the fixed polymerization catalyst is separated from the solution.


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Inventors:
NAKANO KOJI
NOZAKI KYOKO
NISHIOKA SEIJI
Application Number:
JP2010061295A
Publication Date:
October 06, 2011
Filing Date:
March 17, 2010
Export Citation:
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Assignee:
UNIV TOKYO
International Classes:
C08G64/40; C07D307/42
Domestic Patent References:
JP2010001443A2010-01-07
JP2009215471A2009-09-24
Foreign References:
WO2010013948A22010-02-04
WO2008150033A12008-12-11
Attorney, Agent or Firm:
Atsushi Aoki
Takashi Ishida
Tetsuji Koga
Nagasaka Tomoyasu
Satoshi Deno
Atsushi Ebiya



 
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