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Title:
WATER DISPERSION, CARBON FIBER BUNDLE, AND UNIDIRECTIONAL MATERIAL
Document Type and Number:
WIPO Patent Application WO/2024/071064
Kind Code:
A1
Abstract:
Provided is a water dispersion which comprises a resin component that suppresses fuzz generated from a cut end surface of a carbon fiber bundle, that can improve the bundling properties of carbon fibers and the ILSS of laminated bodies laminated by fusing UD sheets, and that can be used as a carbon fiber bundle sizing agent to be used in a unidirectional material. The water dispersion has a resin component that: includes an ethylene・α-olefin copolymer (A) or an acid modified product (B) thereof satisfying all of requirements (a1) to (a3); has a storage elastic modulus at 25°C of 100 MPa or more and 100,000 MPa or less; and is present in a ratio of 0.01 mass% or more and 50 mass% or less. Requirements: (a1) the kinematic viscosity at 100°C is10 mm2/s to 5,000 mm2/s; (a2) the content ratio of structural units derived from ethylene is 30 mol% to 85 mol%; and (a3) the molecular weight distribution (Mw/Mn) of molecular weight obtained by polystyrene conversion measured by gel permeation chromatography (GPC) is 2.5 or less.

Inventors:
MIZUNO SHUNYA
ITOU YUICHI
YANO MASAHIRO
LIN SHENG-HSUN
CHOU CHENG-CHUN
LI YU-SHENG
Application Number:
PCT/JP2023/034807
Publication Date:
April 04, 2024
Filing Date:
September 26, 2023
Export Citation:
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Assignee:
MITSUI CHEMICALS INC (JP)
FORMOSA PLASTICS CORP (TW)
International Classes:
D06M15/227; B29B11/16; C08C19/28; C08F210/02; C08K9/08; C08L9/00; C08L23/08; C08L23/26; C08L33/04; C08L75/04; C08L101/00; D06M15/263; D06M15/564; D06M15/693; D06M101/40
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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