US 12,435,194 B2
Fiber-reinforced thermoplastic resin substrate
Kenji Ishitake, Nagoya (JP); Masayuki Koshi, Nagoya (JP); and Koki Yoshino, Nagoya (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 17/910,541
Filed by Toray Industries, Inc, Tokyo (JP)
PCT Filed Mar. 16, 2021, PCT No. PCT/JP2021/010526
§ 371(c)(1), (2) Date Sep. 9, 2022,
PCT Pub. No. WO2021/187459, PCT Pub. Date Sep. 23, 2021.
Claims priority of application No. 2020-047770 (JP), filed on Mar. 18, 2020.
Prior Publication US 2023/0128101 A1, Apr. 27, 2023
Int. Cl. C08J 5/24 (2006.01)
CPC C08J 5/243 (2021.05) [C08J 2381/02 (2013.01)] 4 Claims
 
1. A fiber-reinforced thermoplastic resin substrate comprising a plurality of continuous reinforcing fibers and a polyphenylene sulfide resin with which the plurality of continuous reinforcing fibers are impregnated, wherein the polyphenylene sulfide resin has a weight average molecular weight of 75,000 or more and 150,000 or less, and the polyphenylene sulfide resin has an ash content of 0.001 wt % or more and 0.30 wt % or less, and the polyphenylene sulfide resin has a carboxyl group content of 5 μmol/g or more and 20 μmol/g or less.