Polyester-polyether block copolymers

Details Polyester-polyether block copolymers Polyester-polyether block copolymers

C - Chemistry, Metallurgy

08

G

C08G 63/668 (2006.01) C08G 18/42 (2006.01) C08G 18/48 (2006.01) C08G 65/26 (2006.01) C08L 67/00 (2006.01) C08L 71/02 (2006.01)

Patent

CA 2387152

The invention relates to polyester-polyether block copolymers which can be produced by the catalytically induced attachment of alkylene oxides to H functional starting materials. Said copolymers are characterised in that polyester alcohols are used as the H functional starting materials and multi- metal cyanide compounds are used as the catalysts.

La présente invention concerne des copolymères blocs de polyester-polyéther qui peuvent être produits par addition catalytique d'oxydes d'alkylène à des substances de départ à fonction H. Cette invention se caractérise en que des alcools de polyester sont utilisés en tant que substances de départ à fonction H et en ce que des composés à base de cyanure polymétallique sont utilisés en tant que catalyseurs.

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