Flame resistant polymer, polymer solution, flame resistant fiber, carbon fiber, and methods of producing same
US9765448B2 · kind B2 · utility
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10Claims
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Key dates
| Filing date | Jul 11, 2014 |
| Grant date | Sep 19, 2017 |
| Priority date | — |
| Expiry date | Jul 11, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L2203/12
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame resistant polymer is obtained by reacting polyacrylonitrile with amine and nitro compounds, the polyacrylonitrile being polymerized by aqueous suspension polymerization using a redox initiator and containing an S component at an amount of 3,000 μg/g or less. A PAN-based polymer in which both yarn producing properties and flame resistance are improved can be realized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.