Patent ID: 7652088

Claim:
A method for producing an organic-inorganic composite material comprising: at least one organic polymer selected from the group consisting of polyamide, polyurethane, and polyurea, and an inorganic compound particle selected from the group consisting of metal oxides of groups 3 to 12 transition metal elements of the periodic table, metal oxides of main metal elements selected from the group consisting of 13 Al, 31 Ga, 32 Ge, 49 In, 50 Sn, 51 Sb, 82 Pb and 83 Bi of the periodic table, metal hydroxides of said transition and main metal elements, and metal carbonates of said transition and main metal elements, which is finely dispersed in the organic polymer matrix, wherein the inorganic compound particles have an average particle size which is not greater than 500 nm, and the content of the inorganic compound particles in the composite is from 20 to 80 weight % per 100 weight % of the composite, said method comprising: mixing and reacting: (A) an organic solution formed by dissolving at least one compound selected from the group consisting of halide dicarboxylates, dichloroformate compounds and phosgene compounds in an organic solvent; and (B) a basic aqueous solution comprising: a metal compound of at least one of a metal oxide, a metal hydroxide and a metal carbonate of at least one alkali metal element and at least one metal element selected from the group consisting of groups 3 to 12 transition metal elements of the periodic table and main metal elements selected from the group consisting of 13 Al, 31 Ga, 32 Ge, 49 In, 50 Sn, 51 Sb, 82 Pb and 83 Bi of the periodic table, and a diamine.