Oxidation resistant highly-crosslinked UHMWPE
US8586667B2 · kind B2 · utility
4Cited by
8References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2008 |
| Grant date | Nov 19, 2013 |
| Priority date | — |
| Expiry date | Aug 14, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L23/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to highly cross-linked UHMWPE, which is possessed of an improved oxidation resistance, as well as a method for making the same. The UHMWPE material of the current invention is combined with an anti-oxidant compound or a free-radical scavenger prior to formation. Once the UHMWPE with the added material has been formed and treated with gamma or electron bean irradiation, it shows an improved wear resistance and also a good resistance to oxidation. Such a material, is particularly interesting for the field of making replacement joint implants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.