Copolymerizable benzophenone photoinitiators
US5900472A · kind A · utility
2Cited by
1References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 23, 1996 |
| Grant date | May 4, 1999 |
| Priority date | — |
| Expiry date | Dec 23, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31649
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Copolymerizable benzophenone photoinitiators of the formula I ##STR1## wherein 1, k=0, 1, 2. PA1 R.sub.1 =divalent organic group having 1 to 25 carbon atoms; PA1 R.sub.2 =H or methyl; and PA1 R.sub.3, R.sub.4 =organic group having 1 to 25 carbon atoms. PA1 X, Y=hydrogen, halogen or (C.sub.1 -C.sub.25) groups containing N, S, and/or O; and method of making the photoinitiators. The photoinitiators overcome the leaching problem with prior photoinitiators in radiation curable polymer applications. Radiation curable polymers, cured polymers, and coated articles are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.