Irradiated fluoropolymer articles having low leachable fluoride ions
US9403960B2 · kind B2 · utility
3Cited by
10References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 24, 2015 |
| Grant date | Aug 2, 2016 |
| Priority date | — |
| Expiry date | Jul 24, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2003/2296
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to fluoropolymer articles that have been irradiated with at least 5 Kilo Gray of radiation, where the resulting articles have low levels of leachable or extractable fluoride ion. The low fluoride ion migration from the irradiated article is due to the presence of low levels of metallic salts or oxides in the fluoropolymer composition. The invention is especially useful for fluoropolymer articles in which the fluoropolymer layer contacts a biological or pharmaceutical fluid, and that are subjected to sterilization by irradiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.