Title:
PREPREG AND PRODUCTION METHOD THEREFOR, AND MOLDED OBJECT
Document Type and Number:
WIPO Patent Application WO/2022/181804
Kind Code:
A1
Abstract:
A prepreg which comprises carbon fibers and a matrix resin including a polyetherimide resin (A) having repeating units represented by general formula (a), wherein the matrix resin satisfies requirement (1). Requirement (1): To have a tensile elongation retention of 15-90%, which is obtained by: determining the TD tensile elongation at break (T1) of a film obtained by extrusion-forming the matrix resin into a film shape; immersing said film in a specific oil at 23°C for 1,000 hours and thereafter determining the TD tensile elongation at break (T2); and making a calculation using equation (1). Equation (1): Tensile elongation retention = [(tensile elongation at break (T2))/(tensile elongation at break (T1))]×100 (In formula (a), m is a number of 5-1,500.)
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Inventors:
FURUHASHI YUMA (JP)
OKADA KAZUYA (JP)
OKADA KAZUYA (JP)
Application Number:
PCT/JP2022/008069
Publication Date:
September 01, 2022
Filing Date:
February 25, 2022
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C08J5/04; C08G73/10; C08L79/08
Domestic Patent References:
| WO2019168009A1 | 2019-09-06 | |||
| WO2020004638A1 | 2020-01-02 |
Foreign References:
| JP2002226699A | 2002-08-14 | |||
| JP2019510860A | 2019-04-18 | |||
| JP2002212314A | 2002-07-31 | |||
| JP2007051256A | 2007-03-01 | |||
| JP2002105221A | 2002-04-10 | |||
| JP2021029143A | 2021-03-01 | |||
| JP2004107626A | 2004-04-08 | |||
| JP2005239843A | 2005-09-08 |
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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