IONIC CATALYST FOR THE MELT POLYMERIZATION OF POLYCARBONATE AND METHOD OF USING THE SAME

In one embodiment, a process for melt polymerization of polycarbonate comprises a step for melt polymerizing a dihydroxy compound and a carbonate precursor to form a polycarbonate in the presence of a catalyst comprising an ionic catalyst of chemical formula I, wherein i+ii+iii+iv is 16 or more, i i...

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Bibliographische Detailangaben
Hauptverfasser:	GUNASEKARAN SIVALINGAM, DHAR DWAIRATH, AGUDO JORGE A. GARCIA, BOJARSKI AARON DAVID
Format:	Patent
Sprache:	eng ; kor
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Beschreibung
Zusammenfassung:	In one embodiment, a process for melt polymerization of polycarbonate comprises a step for melt polymerizing a dihydroxy compound and a carbonate precursor to form a polycarbonate in the presence of a catalyst comprising an ionic catalyst of chemical formula I, wherein i+ii+iii+iv is 16 or more, i is ii+2 or more and A is an anion. 일 구현예에 있어서, 폴리카보네이트를 용융 중합하는 과정은, 디히드록시 화합물과 카보네이트 전구체를 용융 중합하여 화학식 I의 이온성 촉매를 포함하는 촉매의 존재하에 폴리카보네이트를 형성시키는 단계를 포함하는데, i+ii+iii+iv는 16 이상이고; i는 ii+2 이상이고; A는 음이온이다.