Crosslinkable polyurea polymers
US6479587B1 · kind B1 · utility
95Cited by
20References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Mar 16, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S525/903
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to novel crosslinkable prepolymers of formula (1), wherein the variables have the meanings given in the claims, to homo- or co-polymers obtainable therefrom by crosslinking and to mouldings, such as, especially, contact lenses, made from those homo- or co-polymers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.