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Patent Searching and Data


Title:
PRODUCTION OF POLYCARBONATE
Document Type and Number:
Japanese Patent JPH0753706
Kind Code:
A
Abstract:

PURPOSE: To produce a high-quality polycarbonate excellent in heat and hydrolysis resistances with good productivity.

CONSTITUTION: In producing a polycarbonate from a dihydric phenol and a carbonic diester through transesterification in the presence of a transesterification catalyst, an aromatic halogen or nitro compound having electron attracting groups at the ortho or para positions is added to the polymerization system.


Inventors:
BANDO TORU
ITO MITSUNORI
Application Number:
JP22233493A
Publication Date:
February 28, 1995
Filing Date:
August 16, 1993
Export Citation:
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Assignee:
IDEMITSU KOSAN CO
International Classes:
C08G64/30; C08G64/20; (IPC1-7): C08G64/30
Attorney, Agent or Firm:
Hotaka Tetsuo