	US 12,031,002 B2
	Prepreg, method for producing prepreg, and molded article
Naoki Katou, Takaishi (JP); and Tomoaki Shinchi, Takaishi (JP)
Assigned to DIC CORPORATION, Tokyo (JP)
Appl. No. 18/555,775
Filed by DIC Corporation, Tokyo (JP)
PCT Filed Mar. 17, 2022, PCT No. PCT/JP2022/012139 § 371(c)(1), (2) Date Oct. 17, 2023, PCT Pub. No. WO2022/249672, PCT Pub. Date Dec. 1, 2022.
Claims priority of application No. 2021-086990 (JP), filed on May 24, 2021.
Prior Publication US 2024/0101776 A1, Mar. 28, 2024
Int. Cl. C08J 5/24 (2006.01); B29B 15/10 (2006.01); C08K 5/17 (2006.01)

CPC C08J 5/249 (2021.05) [B29B 15/10 (2013.01); C08K 5/17 (2013.01)]

7 Claims

1. A prepreg, comprising:

a resin composition including

a urethane (meth)acrylate (A),

a polymerization initiator (B), and

an amine catalyst (C), wherein the amine catalyst is an acid-blocked amine catalyst; and

reinforcement fibers (D), wherein the urethane (meth)acrylate (A) is a reaction product of a polyisocyanate compound (a1) and a hydroxyl group-containing compound (a2), the polyisocyanate compound (a1) including polymethylene polyphenyl polyisocyanate and diphenylmethane diisocyanate, the hydroxyl group-containing compound (a2) including a compound having a hydroxyl group and a (meth)acryloyl group.