PROCESS FOR THE PREPARATION OF OXY-DIPHTHALIC ANHYDRIDES

PROCESS FOR THE PREPARATION OF OXY-DIPHTHALIC ANHYDRIDES Oxy-diphthalic anhydrides are prepared by reacting a halophthalic anhydride with an hydroxyphthalic anhydride in a polar aprotic solvent and in the presence of an alkali metal compound such as KF, CsF or K2CO3.

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Bibliographische Detailangaben
1. Verfasser:	SCHWARTZ, WILLIS T
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY HETEROCYCLIC COMPOUNDS METALLURGY ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:	PROCESS FOR THE PREPARATION OF OXY-DIPHTHALIC ANHYDRIDES Oxy-diphthalic anhydrides are prepared by reacting a halophthalic anhydride with an hydroxyphthalic anhydride in a polar aprotic solvent and in the presence of an alkali metal compound such as KF, CsF or K2CO3.