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Title:
FIBER-REINFORCED MOLDING MATERIAL AND MOLDED ARTICLE USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/070076
Kind Code:
A1
Abstract:
Provided is a fiber-reinforced molding material containing the following as essential raw materials: a vinyl ester (A) that is a reaction product of (meth)acrylic acid (a2) and an epoxy resin (a1) having an epoxy equivalent weight in the range of 180-500; an unsaturated monomer (B) having a flash point of 100°C or more; a polyisocyanate (C); a polymerization initiator (D); and carbon fibers (E) having a fiber length of 2.5-50 mm. The mass ratio ((A)/(B)) of the vinyl ester (A) and the unsaturated monomer (B) is in the range of 40/60-85/15. The molar ratio (NCO/OH) of an isocyanate group (NCO) in the polyisocyanate (C) and a hydroxyl group (OH) in the vinyl ester (A) is in the range of 0.25-0.85. The fiber-reinforced molding material results in an excellent work environment during molding work, has excellent handling properties and moldability, and makes it possible to obtain molded articles having an excellent appearance and excellent physical properties such as bending strength. The fiber-reinforced molding material is thus suitable for use in automotive members or the like.

Inventors:
FUJITA YUKIKO (JP)
YASUMURA TAKASHI (JP)
Application Number:
PCT/JP2017/023898
Publication Date:
April 19, 2018
Filing Date:
June 29, 2017
Export Citation:
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Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08J5/24; B29C70/16; C08G18/67; C08G18/76; B29K63/00
Domestic Patent References:
WO2015133289A12015-09-11
WO2016039326A12016-03-17
Foreign References:
JPH09110948A1997-04-28
JP2005154589A2005-06-16
JP2013053266A2013-03-21
JP2006052271A2006-02-23
JP2005247879A2005-09-15
JP2006045404A2006-02-16
JP6150034B12017-06-21
JP6156612B12017-07-05
Other References:
See also references of EP 3438167A4
Attorney, Agent or Firm:
KONO Michihiro (JP)
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