Polymers containing pendant acid functionalities and labile backbone bonds

摘要

The instant invention is directed to a polymer with at least one labile backbone bond per repeat unit and at least one pendant acid functionality per thousand repeat units. The instant invention is also directed to a controlled release device which comprises: (A) a polymer with at least one labile backbone bond per repeat unit and at least one pendant acid functionality per thousand repeat units; and (B) a beneficial substance incorporated within or surrounded by the matrix of said polymer.