Photosensitizers for free radical polymerization initiation resins and method of making the same
US6204302A · kind A · utility
24Cited by
24References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1999 |
| Grant date | Mar 20, 2001 |
| Priority date | — |
| Expiry date | Nov 19, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S522/908
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A photoinitiator composition that includes (a) 1-aryl-2-alkyl-1,2-ethanedione and (b) a rigid 1,2-dione in a weight ratio of (a):(b) in a range of about 1:20 to about 20:1 is disclosed. The photoinitiator composition can be used in a photocurable dental composition in an amount sufficient to achieve a degree of double-bond conversion of at least 50%. Methods for making the photocurable dental composition are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.