Multi-functional photoactive additives with improved chemical and flame resistance
US9422395B2 · kind B2 · utility
4Cited by
4References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Aug 23, 2016 |
| Priority date | — |
| Expiry date | Mar 13, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Photoactive additives are disclosed. The additive is formed from the reaction of a dihydroxybenzophenone, one or more linker moieties having functional groups that react with the phenolic groups, a diol chain extender, and an end-capping agent. If desired, a secondary linker moiety can be used. When added to a base polymeric resin, the photoactive additive permits crosslinking when exposed to ultraviolet light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.