Polymeric materials

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 18/48 (2006.01) A61K 9/20 (2006.01) A61K 9/22 (2006.01) A61K 47/34 (2006.01) C08G 18/50 (2006.01) C08G 18/66 (2006.01) C08G 18/75 (2006.01)

Patent

CA 2064889

Linear chain extended poly(alkylene oxides) having at least a portion of hydrophobic hydrogen bonding chain extending groups are soluble in at least one solvent and swellable in water. The chain extending groups preferably comprise a urea linkage and can be produced by the reaction of an amine with an isocyanate. The extended polymers and their solutions may readily be fabricated into controlled release compositions, e.g. for the release of pharmaceuticals.

Des oxydes poly(alkylène) à chaîne étendue linéaire ayant au moins une partie de groupes à extension de chaîne de liaison d'hydrogène hydrophobe sont solubles dans au moins un solvant et gonflent dans l'eau. Les groupes à extension de chaîne comprennent préférablement une liaison d'urée et peuvent être produits par la réaction d'une amine avec un isocyanate. Les polymères étendus et leurs solutions peuvent être rapidement préparés sous forme de composition à libération régulée, par exemple pour la libération de produits pharmaceutiques.

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