Method of grafting functional groups to synthetic polymers...

C - Chemistry – Metallurgy – 08 – F

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C08F 283/02 (2006.01) C08G 63/91 (2006.01) C08L 51/08 (2006.01)

Patent

CA 2226946

The invention provides a graft copolymer made by grafting a monomer containing a functional group to a polyester macromolecule using an addition reaction or a substitution reaction. The invention further provides a biodegradable composition that is made by melt blending the graft copolymer and a natural polymer, such as starch or protein. The invention further includes a method of making the graft copolymer using an addition reaction or a substitution reaction and a method for making the biodegradable composition by melt blending the graft copolymer and a natural polymer at an elevated temperature.

La présente invention se rapporte à un copolymère greffé que l'on fabrique en greffant un monomère contenant un groupe fonctionnel à une macromolécule de polyester au moyen d'une réaction d'addition ou de substitution. L'invention se rapporte également à une composition biodégradable que l'on fabrique en mélangeant sous forme fondue le copolymère greffé et un polymère naturel, du type amidon ou protéine. L'invention se rapporte en outre à un procédé de fabrication d'un copolymère greffé au moyen d'une réaction d'addition ou de substitution et à un procédé de fabrication de la composition biodégradable consistant à mélanger, sous forme fondue et à température élevée, le copolymère greffé et un polymère naturel.

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