Biocompatible articles having high permeability to gases derived from polysulfones
US4179757A · kind A · utility
6Cited by
14References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 10, 1976 |
| Grant date | Dec 25, 1979 |
| Priority date | — |
| Expiry date | May 10, 1996 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61F2013/15048
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
There is disclosed the preparation of an alpha-olefin-sulfur dioxide copolymer derived from the C.sub.8 to C.sub.18 alpha-olefins. The polymers undergo clean thermal degradation, having high permeabilities to oxygen and carbon dioxide, and are readily processed into a membrane article. Maximum permeabilities are obtained with the C.sub.16 based polymer. New uses of the copolymer are set forth including perfusion membranes, soft contact lenses and biocompatible articles for contact with human body fluids including surgical tubing, wound dressings, and prosthetic devices such as artificial veins, arteries and heart valves.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.