Initiator and ultraviolet absorber blends for changing lens power by ultraviolet light
US7560499B2 · kind B2 · utility
29Cited by
19References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 2005 |
| Grant date | Jul 14, 2009 |
| Priority date | — |
| Expiry date | Feb 7, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02C2202/14
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Novel blends of photo-initiators and photo-absorbers are disclosed. By the proper selection of the type and amount of absorber and initiator used in a composition, it is possible to regulate the conditions under which photo-induced reactions occur. In a specific embodiment, blends of UV initiators and photoabsorbers are used to control the conditions under which UV initiated polymerization occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.