Methods for improving chemical and flame resistance with multi-functional photoactive additives
US10000636B2 · kind B2 · utility
1Cited by
12References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 14, 2014 |
| Grant date | Jun 19, 2018 |
| Priority date | — |
| Expiry date | Jul 12, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L69/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Polymeric blends having improved flame retardance properties and good ductility at low temperatures are disclosed. The blend is formed from (A) a photoactive additive that is a cross-linkable polycarbonate resin containing a photoactive group derived from a dihydroxybenzophenone; and (B) a polymer resin which is different from the photoactive additive. The additive can be a compound, oligomer, or polymer. When exposed to ultraviolet light, crosslinking will occur between the photoactive additive and the polymer resin, enhancing the chemical resistance and flame retardance while maintaining ductility.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.