Title:
PREPREG AND MOLDED ARTICLE
Document Type and Number:
WIPO Patent Application WO/2021/131564
Kind Code:
A1
Abstract:
Provided is a prepreg that contains a urethane (meth)acrylate (A), an ethylenically unsaturated monomer (B), a polymerization initiator (C), and reinforcement fibers (D), and that is characterized in that the urethane (meth)acrylate (A) is a reaction product of a polyisocyanate (a1) and a polyol (a2) having an ethylenically unsaturated group and an aromatic backbone, and/or a reaction product of the polyisocyanate (a1), a polyol (a3) not having an ethylenically unsaturated group but having an aromatic backbone, and a hydroxyalkyl (meth)acrylate (a4), and the ethylenically unsaturated monomer (B) has a molecular weight of not less than 320, and the prepreg has a weight reduction rate (%) of less than 2 when being heated for 3 minutes at 150°C under the atmospheric pressure. This prepreg has excellent moldability and allows production of a molded article having various physical properties such as excellent flexural strength, and interlayer shear strength, and therefore, can be suitably used for automotive members and the like.
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Inventors:
YASUMURA TAKASHI (JP)
SHINCHI TOMOAKI (JP)
SHINCHI TOMOAKI (JP)
Application Number:
PCT/JP2020/044968
Publication Date:
July 01, 2021
Filing Date:
December 03, 2020
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08F290/00; C08J5/24
Domestic Patent References:
| WO2017110446A1 | 2017-06-29 | |||
| WO2019065209A1 | 2019-04-04 | |||
| WO2014119234A1 | 2014-08-07 | |||
| WO2017110446A1 | 2017-06-29 |
Foreign References:
| JP2017214463A | 2017-12-07 | |||
| JP2017114936A | 2017-06-29 | |||
| JP2019510848A | 2019-04-18 | |||
| JPS62292839A | 1987-12-19 |
Other References:
See also references of EP 4083092A4
Attorney, Agent or Firm:
OGAWA Shinji (JP)
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