METHOD OF PRODUCING POLYCARBONATE BY MELT RE-ESTERIFICATION Russian patent published in 2012 - IPC C08G64/30 C08G64/38 C08G64/20 C08G64/14 C08G64/04 

Abstract RU 2468041 C2

FIELD: chemistry.

SUBSTANCE: present invention relates to a method of producing polycarbonate used as an optical data medium or for making light-diffusing glass. The method involves melt re-esterification of a dihydroxyaryl compound with a diarylcarbonate in the presence of a catalyst. Before the last reaction step, an inhibitor is added to the melt and during or after the last reaction step, an aromatic hydroxycarboxylic acid or derivative thereof is added.

EFFECT: polycarbonate obtained using said method has low electrostatic charge.

8 cl, 6 ex

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RU 2 468 041 C2

Authors

Fisher Peter

Khehze Vil'Frid

Majer Aleksander

Dates

2012-11-27Published

2008-05-07Filed