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Patent Searching and Data


Title:
RECYCLING METHOD FOR POLYCARBONATE RESIN
Document Type and Number:
Japanese Patent JP2003041049
Kind Code:
A
Abstract:

To provide a recycling method for a polycarbonate resin, with which side reactions are suppressed and which has a slight adverse effect on the environment.

The polycarbonate resin is mixed with an alcohol in a subcritical or supercritical state and decomposed by transesterification to produce a dihydroxy compound and/or a carbonate compound. Since the alcohol acts as an excellent catalyst as well as a reaction solvent, an additional catalyst such as an alkali, and a solvent are not specially used but the polycarbonate resin can be decomposed in a high ratio equal to or higher than that obtained by using them.


Inventors:
KAWASHIMA FUMITO
KITAGAWA HIROHISA
DEN KEIICHI
SAKAI ATSUSHI
Application Number:
JP2001234502A
Publication Date:
February 13, 2003
Filing Date:
August 02, 2001
Export Citation:
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Assignee:
KANSAI RES INST
International Classes:
C08J11/24; B01J3/00; C07C37/01; C07C39/16; C07C68/06; C07C69/96; (IPC1-7): C08J11/24; B01J3/00; C07C37/01; C07C68/06
Attorney, Agent or Firm:
Okazaki Toyono