N-Vinyl lactam based biomedical devices
US4436887A · kind A · utility
74Cited by
13References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 1981 |
| Grant date | Mar 13, 1984 |
| Priority date | — |
| Expiry date | Nov 12, 2001 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B1/043
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
N-vinyl lactam monomers and comonomers are cross-linked with resonance free di(alkene tertiary amine) cyclic compounds to obtain biomedical devices, including contact lenses, which have high oxygen permeability and good mechanical properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.