Invention Grant
- Patent Title: Flame resistant polymer, polymer solution, flame resistant fiber, carbon fiber, and methods of producing same
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Application No.: US14904455Application Date: 2014-07-11
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Publication No.: US09765448B2Publication Date: 2017-09-19
- Inventor: Tetsunori Higuchi , Mami Sakaguchi
- Applicant: The University of Tokyo
- Applicant Address: JP
- Assignee: The University of Tokyo
- Current Assignee: The University of Tokyo
- Current Assignee Address: JP
- Agency: DLA Piper LLP (US)
- Priority: JP2013-146226 20130712
- International Application: PCT/JP2014/068545 WO 20140711
- International Announcement: WO2015/005469 WO 20150115
- Main IPC: D01F6/18
- IPC: D01F6/18 ; D01D5/06 ; D01F9/22 ; C08F120/44 ; C08L33/20 ; C08F2/18 ; C08F2/44 ; D01F1/07 ; C08F8/32 ; C08F8/06 ; C08F8/48
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.
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