Photoactive additives with photoactive monomers and endcaps
US9751980B2 · kind B2 · utility
2Cited by
5References
53Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | Sep 5, 2017 |
| 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, such as cross-linkable polycarbonate resins, are disclosed. The additive is formed from the reaction of a monohydroxybenzophenone, a dihydroxybenzophenone, a diol chain extender, and one or more linker moieties having functional groups that react with the phenolic groups on the other ingredients. If desired, a secondary linker moiety and/or an end-capping agent 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.