Flame-resistant polycarbonate film
US9228067B2 · kind B2 · utility
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3References
32Claims
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Key dates
| Filing date | Sep 14, 2012 |
| Grant date | Jan 5, 2016 |
| Priority date | — |
| Expiry date | Jul 12, 2034 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polycarbonate film having a thickness of 0.05 mm to 0.25 mm is formed from a thermoplastic composition that includes a first branched polycarbonate that has a peak melt viscosity of at least 7,000 poise when measured using a parallel plate melt rheology test at a heating rate of 10° C./min at a temperature of between 350° C. to 450° C., a second branched polycarbonate, and a perfluoroalkyl sulfonate salt.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.