Copolymers of 1,4-dioxepan-2-one and 1,5,8,12-tetraoxacyclotetradecane-7-14-dione
US5442032A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1994 |
| Grant date | Aug 15, 1995 |
| Priority date | — |
| Expiry date | Mar 15, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31786
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
This invention provides various copolymers comprising a repeating unit of the chemical formula: EQU (CH.sub.2 CH.sub.2 CH.sub.2 OCH.sub.2 CO.sub.2) and other repeating units having a chemical formula selected from the group consisting of: EQU (CHRCO.sub.2), EQU ([CH.sub.2 ].sub.5 CO.sub.2), EQU (CH.sub.2 CH.sub.2 OCH.sub.2 CO.sub.2), EQU (CH.sub.2 CH.sub.2 CH.sub.2 OCO.sub.2), and combinations of two or mope 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.