US 12,012,485 B2
Heat-curable citraconimide resin composition
Yoshihiro Tsutsumi, Annaka (JP); Naoyuki Kushihara, Annaka (JP); and Rina Sasahara, Annaka (JP)
Assigned to SHIN-ETSU CHEMICAL CO., LTD., Tokyo (JP)
Filed by Shin-Etsu Chemical Co., Ltd., Tokyo (JP)
Filed on Mar. 4, 2022, as Appl. No. 17/687,420.
Claims priority of application No. 2021-048102 (JP), filed on Mar. 23, 2021.
Prior Publication US 2022/0306808 A1, Sep. 29, 2022
Int. Cl. C08G 73/10 (2006.01); C08J 5/18 (2006.01); C08J 5/24 (2006.01); C09J 179/08 (2006.01)
CPC C08G 73/1082 (2013.01) [C08J 5/18 (2013.01); C08J 5/24 (2013.01); C09J 179/08 (2013.01); C08J 2379/08 (2013.01)] 14 Claims
 
1. A heat-curable citraconimide resin composition comprising:
(A) a citraconimide compound represented by the following formulae (5), (6) or (7),

OG Complex Work Unit Chemistry
wherein p is 1 to 10 and C36H72 represents a dimer acid frame,

OG Complex Work Unit Chemistry
wherein q is 1 to 10 and C36H72 represents a dimer acid frame;
(B) an epoxy resin having at least two epoxy groups in one molecule; and
(C) a reaction promoter,
wherein a mass ratio between the components (A) and (B) is (A):(B)=99:1 to 1:99.