	US 12,146,039 B2
	Resin composition for carbon fiber composite material, towpreg
Reo Takaiwa, Pau (FR); and Ichiro Taketa, Ehime (JP)
Assigned to Toray Industries, Inc., Tokyo (JP)
Appl. No. 17/424,657
Filed by Toray Industries, Inc., Tokyo (JP)
PCT Filed Dec. 19, 2019, PCT No. PCT/IB2019/001382 § 371(c)(1), (2) Date Jul. 21, 2021, PCT Pub. No. WO2020/161515, PCT Pub. Date Aug. 13, 2020.
Claims priority of application No. 19305156 (EP), filed on Feb. 8, 2019.
Prior Publication US 2022/0119607 A1, Apr. 21, 2022
Int. Cl. C08J 5/24 (2006.01); C08J 3/24 (2006.01); C08L 63/00 (2006.01)

CPC C08J 5/249 (2021.05) [C08J 3/242 (2013.01); C08J 5/243 (2021.05); C08L 63/00 (2013.01); C08J 2363/00 (2013.01); C08J 2481/06 (2013.01)]

19 Claims

1. A towpreg comprising a reinforcing fiber bundle aligned in one direction and impregnated with an epoxy resin composition, wherein the epoxy resin composition contains the following components [A] to [C]:

[A] an epoxy resin which is solid at 23° C. in an amount of 30 parts or more in 100 parts by mass of total epoxy resin components,

[B] a polyfunctional amine type epoxy which is liquid at 23° C. in an amount of 20 parts or more in 100 parts by mass of total epoxy resin components, and

[C] organophilic phyllosilicates.