Patent ID: 7674866

Claim:
A method of producing a polymer, comprising: polymerizing at least one type of a radical-polymerizable monomer in the presence of a radical-polymerization initiator by using as a polymerization catalyst at least one iron complex selected from the group consisting of iron complexes represented by general formulas (1) to (5) and (7): wherein any one of Fe is a bivalent cation; X 1 represents Cl − , Br − I − ; X 2 represents Cl − , Br − , CN − or S − —Ph where Ph represents a phenyl group; and R represents a methyl group or an ethyl group; wherein any one of Fe is a bivalent cation; X 3 represents Cl − , Br − or I − ; R represents a methyl group or an ethyl group; and A − represents an anion; wherein Fe is a bivalent cation; X 4 represents Cl − , Br − , CN − , S − —Ph or S − —R 1 where Ph represents a phenyl group and R 1 represents a methyl group or an ethyl group; L 1 represents CH 3 CN or CO; R represents a methyl group or an ethyl group; and A— represents an anion; wherein Fe is a bivalent cation; X 5 represents Cl − , Br − , CN − , S − —Ph or S − —R 1 where Ph represents a phenyl group and R 1 represents a methyl group or an ethyl group; D + represents a cation; and R represents a methyl group or an ethyl group; wherein Fe is a bivalent cation; X 6 represents Cl − , Br − , CN − , S − —Ph or S − —R 1 where Ph represents a phenyl group and R 1 represents a methyl group or an ethyl group; L 2 represents CH 3 CN or CO; and R represents a methyl group or an ethyl group; and wherein any one of Fe is a tervalent cation; X 8 represents Cl − , Br − or I − ; and R represents a methyl group or an ethyl group.