Invention Grant
- Patent Title: Method for producing sizing agent-coated carbon fibers, and sizing agent-coated carbon fibers
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Application No.: US15017192Application Date: 2016-02-05
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Publication No.: US09771681B2Publication Date: 2017-09-26
- Inventor: Yoshifumi Nakayama , Toshiya Kamae , Daigo Kobayashi , Makoto Endo
- Applicant: TORAY INDUSTRIES, INC.
- Applicant Address: JP Tokyo
- Assignee: TORAY INDUSTRIES, INC.
- Current Assignee: TORAY INDUSTRIES, INC.
- Current Assignee Address: JP Tokyo
- Agency: Birch, Stewart, Kolasch & Birch, LLP
- Priority: JP2010-149130 20100630; JP2010-173398 20100802; JP2010-287142 20101224
- Main IPC: D04H13/00
- IPC: D04H13/00 ; D06M15/55 ; D06M13/285 ; D06M13/325 ; D06M13/46 ; D01F9/12 ; D06M15/555 ; D06M13/328 ; D06M13/35 ; D06M13/352 ; D06M13/355 ; D06M101/40

Abstract:
Disclosed is a method for producing a sizing agent-coated carbon fibers, wherein at least one kind of sizing agent that is selected from the group consisting of sizing agents (a), (b) and (c) is used for coating, in each of the sizing agents a bi- or higher functional epoxy compound (A1) and/or an epoxy compound (A2) being used as a component (A), and the epoxy compound (A2) having a mono- or higher functional epoxy group and at least one functional group that is selected from among a hydroxyl group, an amide group, an imide group, a urethane group, a urea group, a sulfonyl group and a sulfo group. The sizing agent is applied to carbon fibers and the resulting is subjected to a heat treatment within the temperature range of 160-260° C. for 30-600 seconds.
Public/Granted literature
- US20160230332A1 METHOD FOR PRODUCING SIZING AGENT-COATED CARBON FIBERS, AND SIZING AGENT-COATED CARBON FIBERS Public/Granted day:2016-08-11
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