US 12,234,331 B2
Method for producing epoxy resin composition
Isao Imamura, Kanagawa (JP); Sachiko Yamauchi, Kanagawa (JP); Hiroki Kihara, Kanagawa (JP); Haruka Yamaji, Tokyo (JP); and Yasushi Iijima, Tokyo (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jan. 7, 2021, as Appl. No. 17/143,349.
Claims priority of application No. 2020-005947 (JP), filed on Jan. 17, 2020; and application No. 2020-182573 (JP), filed on Oct. 30, 2020.
Prior Publication US 2021/0221964 A1, Jul. 22, 2021
Int. Cl. C08J 3/20 (2006.01); C08K 13/02 (2006.01)
CPC C08J 3/203 (2013.01) [C08K 13/02 (2013.01); C08J 2363/00 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A method for producing an epoxy resin composition containing an epoxy resin, a solid amine-based latent curing agent, and a polythiol, the method comprising:
producing a mixture 1 by kneading the epoxy resin with the solid amine-based latent curing agent; and
producing a mixture 2 by kneading the polythiol with the mixture 1,
wherein the epoxy resin is selected from the group consisting of a bisphenol A-type epoxy resin and an epoxy novolac resin, and
wherein the polythiol is pentaerythritol trispropanethiol.