Patent ID: 8445627

Claim:
A biodegradable polymer composition comprising at least one (PEA) polymer have a structure according to formula (IV): wherein n ranges from about 5 to about 150, m ranges about 0.1 to 0.9; p ranges from about 0.9 to 0.1; R 1 is independently selected from residues of α,ω-alkylene dicarboxylates of structural formula (III) optionally in combination with (C 2 -C 20 ) alkylene; R 5 and R 6 in Formula (III) are independently selected from (C 2 -C 12 ) alkylene or (C 2 -C 12 ) alkenylene; each R 2 is independently hydrogen, (C 1 -C 12 )alkyl, (C 6 -C 10 )aryl or a protecting group; the R 3 s in individual m monomers are independently selected from hydrogen, (C 1 -C 6 )alkyl, (C 2 -C 6 )alkenyl, (C 2 -C 6 )alkynyl, (C 6 -C 10 )aryl(C 1 -C 6 )alkyl, and —(CH 2 ) 2 S(CH 3 ); R 4 is independently selected from (C 2 -C 20 )alkylene, (C 2 -C 20 ) alkenylene, (C 2 -C 8 )alkyloxy, (C 2 -C 20 )alkylene, bicyclic-fragments of 1,4:3,6-dianhydrohexitols of structural formula (II) and residues of saturated or unsaturated therapeutic diols and combinations thereof; and R 7 is independently selected from (C 2 -C 20 ) alkyl or (C 2 -C 20 ) alkenyl.