Title:
RECYCLE METHOD FOR POLYCARBONATE RESIN WASTE
Document Type and Number:
WIPO Patent Application WO2004052972
Kind Code:
A3
Abstract:
Disclosed is a method for recycling polycarbonate using melt polycondensation apparatus. A polycarbonate polycondensation component is introduced into transesterification polymerization equipment and subjected to one or both of a transesterification reaction and a polycondensation reaction. The polycarbonate polycondensation component has an OH group concentration and comprises one or both of polycarbonate waste resin and polycarbonate oligomer. The OH group concentration of the polycarbonate polycondensation component is adjusted either before or during the transesterification and/or polycondensation reactions.
Inventors:
IKEDA AKIO (JP)
KIMURA TAKATO (JP)
SHIMODA TOMOAKI (JP)
KIMURA TAKATO (JP)
SHIMODA TOMOAKI (JP)
Application Number:
PCT/US2003/040065
Publication Date:
July 29, 2004
Filing Date:
December 05, 2003
Export Citation:
Assignee:
GEN ELECTRIC (US)
IKEDA AKIO (JP)
KIMURA TAKATO (JP)
SHIMODA TOMOAKI (JP)
IKEDA AKIO (JP)
KIMURA TAKATO (JP)
SHIMODA TOMOAKI (JP)
International Classes:
C08J11/24; C08G64/00; C08G64/04; C08G64/20; C08J11/22; (IPC1-7): C08J11/10; C08J11/24; C08L69/00
Foreign References:
| US5652275A | 1997-07-29 | |||
| DD46353A |
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