Biodegradable polymers, the preparation thereof, and the use thereof for producing biodegradable moldings

US5936045A · kind A · utility

Assignee

• BASF SE

Inventors

• Volker Warzelhan · Bad Dürkheim, DE
• Gunter Pipper · Bad Dürkheim, DE
• Ursula Seeliger · Ludwigshafen, DE
• Peter Bauer · Ludwigshafen, DE
• Dieter Bernhard Beimborn · Bad Dürkheim, DE
• Motonori Yamamoto · Mannheim, DE

Key dates

• Filing date: Aug 14, 1997
• Grant date: Aug 10, 1999
• Expiry date: Aug 14, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G63/672
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Biodegradable polymers comprising a polyether ester P1 obtained by reacting a first mixture of PA1 20-95 mol% of adipic acid or ester-forming derivatives thereof or mixtures thereof, PA1 5-80 mol% of terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and PA1 0-5 mol% of a compound containing sulfonate groups, and a second mixture of PA1 15-99.8 mol% of a dihydroxy compound selected from the group consisting of C.sub.2 -C.sub.6 -alkanediols and C.sub.5 -C.sub.10 -cycloalkanediols, PA1 85-0.2 mol% of a dihydroxy compound I EQU HO--(CH.sub.2).sub.n --O!.sub.m --H PA1 (n=2, 3 or 4, m=2-250) with PA1 0-5 mol%, based on the first mixture, of a compound D having at least three groups capable of ester formation, and a bisoxazoline C1, their preparation and their use in the manufacture of biodegradable molding materials.