PRODUCTION OF POLYESTER AND COPOLYESTER

The prodn. of polyesters and copolyesters comprises (a) condensation of polyester-forming starting materials to ester or oligo-ester, followed by (b) polycondensation in presence of a Ti catalyst (I) consisting of a TiO2 ppte. and/or a TiO2/SiO2 co-ppte. with a mole ratio of TiO2:SiO2=more than 90:1...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	MIHIYAERU MARUTOURU, KURAUSU HAAFUERURANTO, GERURIITO OOBAARAIN, BERUNHARUTO KUUN, URURIHI BERUGAA, TOOMASU METSUGAA, BERUTORAMU BEERINGAA
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY COMPOSITIONS BASED THEREON MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The prodn. of polyesters and copolyesters comprises (a) condensation of polyester-forming starting materials to ester or oligo-ester, followed by (b) polycondensation in presence of a Ti catalyst (I) consisting of a TiO2 ppte. and/or a TiO2/SiO2 co-ppte. with a mole ratio of TiO2:SiO2=more than 90:10 and/or a TiO2/ZrO2 co-ppte. with a mole ratio of TiO2:ZrO2=more than 95:5, obtd. by hydrolytic pptn. from the corresp. metal alcoholates derived from mono- or polyhydric alcohols.