Title:
【発明の名称】結晶化度の向上したポリカーボネートの製造方法
Document Type and Number:
Japanese Patent JP2002535463
Kind Code:
A
Abstract:
Crystallinity of amorphous precursor polycarbonates is enhanced by contact with at least on diaryl carbonate such as diphenyl carbonate, followed by pelletization and heating to a temperature above the melting point of the diaryl carbonate and below the glass transition temperature of the amorphous precursor polycarbonate. The crystallinity enhancement operation may be conducted in the presence of dihydroxyorganic monomers and may be followed by a solid state polymerization operation.
Inventors:
Di, james
Chatterjee, Goutum
Chatterjee, Goutum
Application Number:
JP2000596064A
Publication Date:
October 22, 2002
Filing Date:
November 12, 1999
Export Citation:
Assignee:
GENERAL ELECTRIC COMPANY
International Classes:
C08G64/18; C08G64/30; C08G64/06; (IPC1-7): C08G64/30
Attorney, Agent or Firm:
Kenichi Matsumoto