High inherent viscosity polymers and fibers therefrom
US8263221B2 · kind B2 · utility
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35References
16Claims
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Key dates
| Filing date | Mar 27, 2006 |
| Grant date | Sep 11, 2012 |
| Priority date | — |
| Expiry date | Nov 21, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2913
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Disclosed are processes for preparing polyareneazole polymers characterized as providing polymer solutions having an inherent viscosity of at least about 22 dl/g at 30° C. at a polymer concentration of 0.05 g/dl in methane sulfonic acid. Polyareneazoles, filaments and yarns are also disclosed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.