Patent ID: 8741877

Claim:
A method of drug delivery, comprising administering a pharmaceutical composition comprising a drug and a polylactide to a subject, wherein the polylactide has the structure: wherein R 1 , R 2 , R 3 , and R 4 are each independently chosen from the group consisting of unsubstituted C 1-20 alkyl, H, C 2-20 alkenyl, and —(CH 2 ) y —(C 6 H 5 ); wherein y=1-20; wherein n is 2 to 100; wherein X is hydrogen or —C(O)—CH═CH 2 ; wherein at least one of R 1 , R 2 , R 3 , and R 4 is C 4-20 unsubstituted alkyl, C 2-20 alkenyl, or —(CH 2 ) y —(C 6 H 5 ); wherein y=1-20; wherein Y is —OH, C 1-12 alkoxy, benzyloxy, or —O—(CH 2 —CH 2 —O) p —CH 3 ; wherein p is 1 to 700; and wherein if Y is —OH, C 1-12 alkoxy, or benzyloxy, then the polylactide has a Tg value of less than 15° C.