Invention Grant
- Patent Title: Carbon-fiber-precursor fiber bundle, carbon fiber bundle, and uses thereof
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Application No.: US16860191Application Date: 2020-04-28
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Publication No.: US11332852B2Publication Date: 2022-05-17
- Inventor: Yuusuke Shinmen , Norifumi Hirota , Takeshi Nii
- Applicant: Mitsubishi Chemical Corporation
- Applicant Address: JP Tokyo
- Assignee: Mitsubishi Chemical Corporation
- Current Assignee: Mitsubishi Chemical Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2010-230492 20101013,JP2011-164596 20110727,JP2011-164597 20110727,JP2011-184328 20110826,JP2011-186859 20110830
- Main IPC: D01F9/12
- IPC: D01F9/12 ; D01D5/253 ; D01F6/38 ; D01F9/22 ; B29C70/44 ; C08J5/04 ; D01D5/096 ; C08J5/24 ; B32B37/14 ; F27D7/00
Abstract:
A method of producing a carbon fiber bundle is provided, involving performing a flame-proof treatment to a carbon-fiber-precursor acryl fiber bundle having a single-fiber fineness of 1.5 dtex or more and 5.0 dtex or less, and having a roundness of 0.7 or more and 0.9 or less in a cross-section shape perpendicular to a fiber axis of the single fiber to obtain a flame-proofed fiber bundle; and performing a carbonization treatment to the flame-proofed fiber bundle.
Public/Granted literature
- US20200263327A1 CARBON-FIBER-PRECURSOR FIBER BUNDLE, CARBON FIBER BUNDLE, AND USES THEREOF Public/Granted day:2020-08-20
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