Transparent and flame retardant polysulfone compositions
US8110639B2 · kind B2 · utility
2Cited by
8References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 14, 2009 |
| Grant date | Feb 7, 2012 |
| Priority date | — |
| Expiry date | Dec 29, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2205/05
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A polysulfone having a first polyphenylene sulfone unit (i.e. PPSU unit) based on one biphenol group and one diphenyl sulfone group and a second sulfone unit (i.e. PSU-AF unit) based on one hexafluorobisphenol A group and one diphenylsulfone group. The polysulfone is transparent and has a total heat release and peak heat release of less than 65 kW·min/m2 and 65 kW/m2, respectively. Compositions containing the polysulfone and articles made by molding and/or extruding the polysulfone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.