Poly((lactic-co-glycolic acid)-B-lysine) and process for synthesizing a block copolymer of PLGA {poly(lactic-co-glycolic acid)} and PLL (poly-ϵ-cbz-L-lysine)
US10131786B2 · kind B2 · utility
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Key dates
| Filing date | Jul 13, 2012 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Sep 15, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of synthesizing copolymers is provided. The method can include coupling a degradable polymer to a poly(amino acid) and then deprotecting the copolymer if the poly(amino acid) contains protected side chains. Copolymer compositions are provided. These compositions include PLGA-PLL copolymers, PLGA-PLL-cbz copolymers, and copolymers of a polyester with a carboxylic acid end group coupled to a poly(amino acid) with an amine group. The compositions may include therapeutic blends and formulations of copolymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.