ABSORBABLE COPOLYMERS AND BLENDS OF 6,6-DIALKYL-1,4-DIOXEPAN-2-ONE AND ITS CYCLIC DIMER.

摘要

This invention provides various copolymers comprising a first repeating unit of the chemical formula: (see formula) in which R1 and/or R2 are alkyl groups and a second repeating units generally having the chemical formula: (see formula) and combinations of two or more thereof wherein R is a hydrogen atom or a methyl group and the first repeating unit is less than 45 weight percent of the total weight of the copolymer. This invention also relates to use of these copolymers in the fabrication of absorbable surgical devices such as sutures and as coatings for medical devices. Additionally, described are blends and polyoxaesters containing the first repeating unit.