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Title:
CARBON FIBER BUNDLE FOR RESIN REINFORCEMENT PURPOSES AND METHOD FOR PRODUCING SAME, AND CARBON-FIBER-REINFORCED THERMOPLASTIC RESIN COMPOSITION AND MOLDED PRODUCT THEREOF
Document Type and Number:
WIPO Patent Application WO/2014/038574
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide a carbon fiber bundle for resin reinforcement purposes, which is produced using a sizing agent that can exert satisfactory interface adhesiveness to both of a carbon fiber bundle and a thermoplastic resin in the production of a carbon-fiber-reinforced thermoplastic resin, and which has satisfactory emulsion stability. One embodiment of the present invention is a carbon fiber bundle for resin reinforcement purposes, which comprises a carbon fiber bundle and a polymer adhered onto the carbon fiber bundle, wherein the polymer is produced by binding an acid-modified polyolefin having a polyolefin structure and an acidic group in the molecular structure thereof to a hydrophilic polymer having a weight average molecular weight (Mw) of 450 or more, and wherein the ratio of the mass of the polyolefin structure to the mass of the acidic group in the acid-modified polyolefin is 100:0.1 to 100:10, the ratio of the mass of the acid-modified polyolefin to the mass of the hydrophilic polymer is 100:1 to 100:100, and the content of the polymer in the carbon fiber bundle for resin reinforcement purposes is 0.1 to 8.0 mass% inclusive.

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Inventors:
OHTANI TADASHI (JP)
HARADA AKIRA (JP)
YODA SHOYA (JP)
TAKAHASHI ATSUSHI (JP)
Application Number:
PCT/JP2013/073762
Publication Date:
March 13, 2014
Filing Date:
September 04, 2013
Export Citation:
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Assignee:
MITSUBISHI RAYON CO (JP)
International Classes:
D06M15/227; C08G81/02; C08J5/06; D06M15/53; D06M101/40
Domestic Patent References:
WO2011030784A12011-03-17
WO2010074118A12010-07-01
WO2012017877A12012-02-09
WO2012008561A12012-01-19
Foreign References:
JP2011214175A2011-10-27
JP2010189658A2010-09-02
JP2010149353A2010-07-08
JP2012041658A2012-03-01
JPH0284566A1990-03-26
JPH06107442A1994-04-19
JP2006233346A2006-09-07
JP2012007280A2012-01-12
Other References:
See also references of EP 2894252A4
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
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