Particulate hydroperoxidized poly-N-vinyl lactam, its preparation and use thereof
US4678838A · kind A · utility
8Cited by
14References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1986 |
| Grant date | Jul 7, 1987 |
| Priority date | — |
| Expiry date | Aug 4, 2006 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Particulate hydroperoxidized poly-N-vinyl lactam containing an average of about 0.5 to 20 hydroperoxy mole equivalents per mole of poly-N-vinyl lactam, the preparation of the same by subjecting particulate poly-N-vinyl lactam to an effective amount of ozone, and the use thereof in the preparation of graft copolymers possessing a low degree of extractibles, finding utility in a wide number of fields, particularly in biomedical devices, semipermeable membranes, and as films or fibers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.