Patent ID: 7270832
Filing Date: 2007-09-18
Classification: A61K,A61Q,B01J

Abstract:
1. A stable colloidal suspension comprising submicron particles, wherein the particles: are individualized supramolecular arrangements comprising linear, peptide-linked, amphiphilic polyamino acids (PAA) comprising at least hydrophilic repeating neutral amino acids (AANI), other titan aspangine, and hydrophobic repeating neutral amino acid (ANNO); wherein the AANI are identical to or different from one another and the AANO are identical to or different from one another; are stable in the aqueous phase at a pH of between 4 and 13 in the absence of a surfactant; have a degree of polymerization (DP) between 50 and 200; spontaneously associate with at least one active principle when at least one active principle in the undissolved state is added to the colloidal suspension; and when associated with at least one active principle, release it in a prolonged manner, in a delayed manner; or in a prolonged and delayed manner.