Telechelic homopolyamino acids functionalized by hydrophobic...

C - Chemistry – Metallurgy – 08 – G

Patent

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Details

C08G 73/02 (2006.01) A61K 9/20 (2006.01) C08G 69/10 (2006.01) C08L 77/04 (2006.01) C08L 79/02 (2006.01)

Patent

CA 2540357

The invention relates to novel materials based on biodegradable homopolyamino acids and which can be used for the vectorization of (an) active ingredient(s) (AI). The invention also relates to novel pharmaceutical, cosmetic, dietetic or phytosanitary compositions based on said homopolyamino acids. The aim of the invention is to produce a novel polymer raw material which can be used for the vectorization of AI and which meets all specifications in an optimum manner: biocompatibility, biodegradability, the ability to become easily associated with a large number of active ingredients or to solubilize them and to release said ingredients in vivo. According to the present invention, which primarily relates to linear homopolyamino acids having aspartic or glutamic units and whose extremities include hydrophobic groups having 8-30 carbon atoms. Said homopolymers are amphiphilic and anionic and can easily be transformed at low cost into particles for the vectorization of active ingredients. Said particles can form stable aqueous colloidal suspensions.

La présente invention concerne des nouveaux matériaux à base d'homopolyaminoacides biodégradables, utiles notamment pour la vectorisation de principe(s) actif(s) (PA). L'invention vise aussi de nouvelles compositions pharmaceutiques, cosmétiques, diététiques ou phytosanitaires à base de ces homopolyaminoacides. Le but de l'invention est de fournir une nouvelle matière première polymère, susceptible d'être utilisée pour la vectorisation de PA et permettant de satisfaire de manière optimale à toutes les spécifications requises en l'espèce : biocompatibilité, biodégradabilité, aptitude à s'associer facilement avec de nombreux principes actifs ou à les solubiliser, et à libérer ces principes actifs in vivo. Ce but est atteint par la présente invention qui concerne tout d'abord des homopolyaminoacides linéaires comprenant des unités aspartiques ou des unités glutamiques, et dont les extrémités sont porteuses de groupements hydrophobes comportant de 8 à 30 atomes de carbone. Ces hornopolymères sont amphiphiles et anioniques et sont aptes à se transformer aisément et économiquement en particules de vectorisation de principes actifs, ces particules étant elles même propres à former des suspensions colloïdales aqueuses stables.

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