Polylactide-urethane copolymers

US9249253B2 · kind B2 · utility

Assignee

• Futerro S.A. · BE

Inventors

• Philippe Dubois · Braives, BE
• Philippe Coszach · Escanaffles, BE
• Gloria Vendrell · Le Havre, FR
• Philippe Degee · Grâce-Hollogne, BE
• Michael Alexandre · Angleur, BE
• Ibrahim Barakat · Sint-Genesius-Rode, BE
• Jean-Marie Raquez · Mons, BE

Key dates

• Filing date: Sep 27, 2007
• Grant date: Feb 2, 2016
• Expiry date: Aug 30, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G2230/00
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The process of obtaining a polylactide-urethane copolymer is described which includes contacting an α, ω dihydroxyl polylactide prepolymer of general formula Iwherein X is NH or O, R is an alkyl or an aryl group, n and n′ are integer numbers which are substantially the same and are in the range from 20 to 140, with a diisocyanate compound of general formula IIO═C═N—R′—N═C═Owherein R′ is an alkyl or an aryl group and with an amine or an alcohol of general formula IIIR″X′]2 wherein R″ is an alkyl or an aryl group and X′ is NH2 or OH, and with the proviso that at least one of R or R″ is an aryl group.