EP 1023357 A1 20000802 - PREPARATION OF DIHYDROXYDIPHENYL-COPOLYCARBONATES BY MELT RE-ESTERIFICATION
Title (en)
PREPARATION OF DIHYDROXYDIPHENYL-COPOLYCARBONATES BY MELT RE-ESTERIFICATION
Title (de)
HERSTELLUNG VON DIHYDROXYDIPHENYL-COPOLYCARBONATEN DURCH SCHMELZUMESTERUNG
Title (fr)
PREPARATION DE DIHYDROXYDIPHENYLE-COPOLYCARBONATES PAR REESTERIFICATION PAR FUSION
Publication
Application
Priority
- DE 19744693 A 19971010
- EP 9806212 W 19980930
Abstract (en)
[origin: WO9919380A1] The invention relates to a method for preparing special copolycarbonates from dihydroxydiphenylene in accordance with the polycarbonate preparation method in the melt, using N-alkyl-substituted piperidines and morpholines as catalysts.
IPC 1-7
IPC 8 full level
C08G 64/06 (2006.01); C08G 64/30 (2006.01)
CPC (source: EP KR)
C08G 64/06 (2013.01 - EP KR); C08G 64/20 (2013.01 - KR); C08G 64/30 (2013.01 - KR); C08G 64/307 (2013.01 - EP KR)
Citation (search report)
See references of WO 9919380A1
Designated contracting state (EPC)
BE DE DK ES FR GB IT NL SE
DOCDB simple family (publication)
WO 9919380 A1 19990422; AU 9541798 A 19990503; BR 9812888 A 20000808; CA 2306157 A1 19990422; CN 1266442 A 20000913; DE 19744693 A1 19990415; EP 1023357 A1 20000802; ID 24573 A 20000727; IL 135003 A0 20010520; JP 2001520242 A 20011030; KR 20010031016 A 20010416; NO 20001167 D0 20000307; NO 20001167 L 20000307; TW 426704 B 20010321
DOCDB simple family (application)
EP 9806212 W 19980930; AU 9541798 A 19980930; BR 9812888 A 19980930; CA 2306157 A 19980930; CN 98808044 A 19980930; DE 19744693 A 19971010; EP 98948996 A 19980930; ID 20000622 D 19980930; IL 13500398 A 19980930; JP 2000515948 A 19980930; KR 20007003823 A 20000408; NO 20001167 A 20000307; TW 87115670 A 19980921