METHOD OF MAKING TRIMETHYLENE CARBONATE

METHOD OF MAKING TRIMETHYLENE CARBONATE

A method of synthesizing trimethylene carbonate is disclosed involving(a) reacting 1,3-propanediol and a compound chosen from phosgene and bis-chloroformates to form a polycarbonate intermediate having the structure:wherein n is at least 2; R1 is an end group chosen from H, R3-Cl, R3-OH and -C(O)Cl,...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: KREUTZBERGER, CHARLES B, BOWMAN, MARK P
Format: Patent
Sprache:eng ; fre ; ger
Schlagworte:
APPARATUS THEREFOR
CHEMISTRY
GENERAL METHODS OF ORGANIC CHEMISTRY
HETEROCYCLIC COMPOUNDS
METALLURGY
ORGANIC CHEMISTRY
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Beschreibung
Zusammenfassung:A method of synthesizing trimethylene carbonate is disclosed involving(a) reacting 1,3-propanediol and a compound chosen from phosgene and bis-chloroformates to form a polycarbonate intermediate having the structure:wherein n is at least 2; R1 is an end group chosen from H, R3-Cl, R3-OH and -C(O)Cl, where R3 is C1-C6 linear or branched alkyl and R2 is an end group chosen from -OCH2CH2CH2Cl, -OCH2CH2CH2OH and Cl; and(b) providing a combination of temperature and pressure corresponding to vapor phase conditions for trimethylene carbonate.