Separately packed curable composition

1. A polymerization initiator kit comprising:

a first member including:

(b) a polymerizable monomer having an acidic group, and

(c) a transition metal compound; and

a second member including:

(d) an aromatic amine compound,

(e) at least one compound selected from sulfinic acid and a salt thereof, and

(fa) a peroxyester compound and/or (fb) an alkyl peroxide,

the aromatic amine compound (d) and the at least one compound (e) being accommodated together or separately.

2. The polymerization initiator kit according to claim 1 , which is a curable composition kit

wherein at least one polymerizable monomer is included in either one of the first member or the second member, or included in another member other than the first member and the second member.

3. The polymerization initiator kit according to claim 1 , which is a separately packed curable composition, wherein:

a first pack (A) comprises the first member and further contains:

(a1) a polymerizable monomer having no acidic group; and

a second pack (B) comprises the second member and further contains:

(a2) a polymerizable monomer having no acidic group.

4. The polymerization initiator kit according to claim 3 , wherein the metal constituting the transition metal compound (c) is an early transition metal.

5. The polymerization initiator kit according to claim 3 , wherein the transition metal compound (c) is a vanadium compound.

6. The polymerization initiator kit according to claim 3 , wherein the second pack (B) contains a photopolymerization initiator (g).

7. The polymerization initiator kit according to claim 3 , wherein at least one of the first pack (A) and the second pack (B) contains a filler (h).

8. The polymerization initiator kit according to claim 3 , wherein a total of the transition metal compound (c), the aromatic amine (d), and the at least one compound (e) selected from sulfinic acid and a salt thereof is 0.02 to 30 parts by mass based on 100 parts by mass of a total of the polymerizable monomers (a1) and (a2) having no acidic group and the polymerizable monomer (b) having an acidic group that are included in the first pack (A) and the second pack (B).

9. The polymerization initiator kit according to claim 3 , wherein a content of the transition metal compound (c) in the first pack (A) is 0.001 to 5 parts by mass based on 100 parts by mass of a total of the polymerizable monomers (a1) and (a2) having no acidic group and the polymerizable monomer (b) having an acidic group that are included in the first pack (A) and the second pack (B).

10. The polymerization initiator kit according to claim 3 , wherein a content of the aromatic amine (d) in the second pack (B) is 0.01 to 5 parts by mass based on 100 parts by mass of a total of the polymerizable monomers (a1) and (a2) having no acidic group and the polymerizable monomer (b) having an acidic group that are included in the first pack and the second pack (B).

11. The polymerization initiator kit according to claim 3 , wherein a content of the at least one compound (e) selected from sulfinic acid and a salt thereof in the second pack (B) is 0.01 to 20 parts by mass based on 100 parts by mass of a total of the polymerizable monomers (a1) and (a2) having no acidic group and the polymerizable monomer (b) having an acidic group that are included in the first pack (A) and the second pack (B).

12. A cured product of a mixture comprising the first pack (A) and the second pack (B) of the polymerization initiator kit according to claim 1 .

13. A dental material comprising the polymerization initiator kit according to claim 1 .

14. The dental material according to claim 13 , wherein the dental material is one dental material selected from the group consisting of a dental adhesive resin cement, a dental composite resin, a dental backing material, a dental root filler, an orthodontic adhesive, a mobile tooth fixing material, and a dental sealant.