Increasing the useful range of cationic photoinitiators in stereolithography
US5494618A · kind A · utility
28Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Jun 27, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/091
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Polymer precursor formulations suitable for stereolithography may be prepared from compositions containing vinyl ether functionalized compounds and epoxy functionalized compounds plus an effective amount of a cationic photoinitiator and an ultraviolet light-absorbing compound to provide a predetermined depth of cure. Preferably, the ultraviolet light-absorbing compound is anthracene or its derivatives.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.