Patent Issued for Liquid polymer delivery system for extended administration of drugs (USPTO 11779589).

The liquid polymer composition has a biodegradable liquid polyester with at least one carboxylic acid end group, and a biocompatible organic solvent. Because the polymers used were solids with relatively high molecular weights, the polymer solutions formed from the combination of the solid polymers and the biocompatible solvents were quite viscous. The liquid polymer pharmaceutical composition of claim 19, wherein the composition comprises between about 20 wt % and about 40 wt % of the biodegradable liquid polyester and between about 40 wt % and about 60 wt % of the biocompatible organic solvent or combination of solvents. [Extracted from the article]

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