	US 12,221,524 B2
	Polymerization initiator, curable composition, dental material, and preparation kit for curable composition
Takenori Mitamura, Chiba (JP); and Yoko Kosugi, Ichihara (JP)
Assigned to MITSUI CHEMICALS, INC., Tokyo (JP)
Filed by MITSUI CHEMICALS, INC., Tokyo (JP)
Filed on Jun. 16, 2023, as Appl. No. 18/336,172.
Application 18/336,172 is a division of application No. 17/057,188, abandoned, previously published as PCT/JP2019/030517, filed on Aug. 2, 2019.
Claims priority of application No. 2018-150314 (JP), filed on Aug. 9, 2018; and application No. 2018-202660 (JP), filed on Oct. 29, 2018.
Prior Publication US 2023/0323084 A1, Oct. 12, 2023
Int. Cl. C08F 4/10 (2006.01); C08F 20/10 (2006.01); C08K 5/00 (2006.01); C08K 5/092 (2006.01); C08K 5/14 (2006.01); C08K 5/3445 (2006.01)

CPC C08K 5/3445 (2013.01) [C08F 4/10 (2013.01); C08F 20/10 (2013.01); C08K 5/0025 (2013.01); C08K 5/092 (2013.01); C08K 5/14 (2013.01)]

5 Claims

1. A kit for preparing a curable composition, comprising

a first pack containing a compound (A) selected from the group consisting of a pyrazolidinedione compound and/or pyrazolidine (di) thione compound (A1), and a salt (A2) of the compound (A1), and

a second pack containing a transition metal compound (B),

wherein at least one of the first pack and the second pack contains a polymerizable monomer (C) and a peroxide (D).