Melt reaction process for crosslinkable polycarbonates
US10131742B2 · kind B2 · utility
1Cited by
2References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2015 |
| Grant date | Nov 20, 2018 |
| Priority date | — |
| Expiry date | Jun 19, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2369/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Melt polymerization processes for producing photoactive additives are disclosed. The photoactive additives are cross-linkable polycarbonate resins formed from a benzophenone, a dihydroxy chain extender, a carbonate precursor, and a catalyst. The additives can be produced without the use of phosgene or dichloromethane, and can be cross-linked with other polymers upon exposure to UV radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.