US 11,939,420 B2
Epoxy resin curing agent, epoxy resin composition, and use of amine composition
Yuma Ohno, Kanagawa (JP); Kazuki Kouno, Kanagawa (JP); Kousuke Ikeuchi, Kanagawa (JP); Emi Ota, Tokyo (JP); and Aoi Yokoo, Niigata (JP)
Assigned to MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP)
Appl. No. 18/025,275
Filed by MITSUBISHI GAS CHEMICAL COMPANY, INC., Tokyo (JP)
PCT Filed Aug. 19, 2021, PCT No. PCT/JP2021/030282
§ 371(c)(1), (2) Date Mar. 8, 2023,
PCT Pub. No. WO2022/059411, PCT Pub. Date Mar. 24, 2022.
Claims priority of application No. 2020-154773 (JP), filed on Sep. 15, 2020.
Prior Publication US 2023/0323017 A1, Oct. 12, 2023
Int. Cl. C08G 59/50 (2006.01)
CPC C08G 59/5026 (2013.01) 7 Claims
 
1. An epoxy resin curing agent comprising an amine composition or a modified product thereof,
wherein the amine composition comprises bis(aminomethyl)cyclohexane (A) and a compound (B) represented by the following formula (1), and
wherein the content of the component (B) based on 100 parts by mass of the component (A) is from 1.5 to 20.0 parts by mass:

OG Complex Work Unit Chemistry
wherein R1 is an alkyl group having 1 to 6 carbon atoms optionally having a hydroxy group, R2NHCH2—, where R2 represents an alkyl group having 1 to 6 carbon atoms, or a group represented by the following formula (1A), and p is a number of 0 to 2,

OG Complex Work Unit Chemistry
wherein R3 represents a hydrogen atom or NH2—.