Preparation of hydroxyl-terminated polyesters

A process for producing hydroxy-terminated polyester by polymerizing a lactone or a mixture of lactones in the presence of a catalyst having the general formula MM'(-OROH)4 where M is an alkali metal, M' is aluminum or boron and R is alkylene, isoalkylene, cycloalkylene or aralkylene. Poly...

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Bibliographische Detailangaben
Hauptverfasser:	SCHOEN, LOWHARDT A. A
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	A process for producing hydroxy-terminated polyester by polymerizing a lactone or a mixture of lactones in the presence of a catalyst having the general formula MM'(-OROH)4 where M is an alkali metal, M' is aluminum or boron and R is alkylene, isoalkylene, cycloalkylene or aralkylene. Polyesters having the general formula 0 PARALLEL HO-R-O-10 C-R'-O- n-C-R''-OH are produced where R is a bifunctional hydrocarbon group, R' and R'' are alkylene groups and n is a whole number equal to or larger than 3.