Metal oxide particle and its use
A technology of oxide particles and oxides, applied in the direction of rare earth metal compounds, titanium oxide/hydroxide, oxide/hydroxide preparation, etc., can solve the problem of film thickness, lack of effectiveness, substrate transparency or color damage, etc. problem, to achieve the effect of good transparency and good absorption efficiency
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Embodiment A1-1
[0324] Prepare such a reaction apparatus, which comprises a pressure-resistant glass reactor that can be heated externally and is equipped with a stirrer, an addition inlet (connected directly to the addition tank), a thermometer, a distillation gas outlet, and a nitrogen feed inlet; connected to the above-mentioned addition inlet The addition tank and the condenser connected to the above-mentioned distilled gas outlet (connected directly to the trap).
[0325]A mixture containing 183 parts of anhydrous zinc acetate (zinc acetate anhydride) powder, 0.13 part of anhydrous copper (I) (zine acetate anhydride) powder and 3885 parts of 1-butanol was charged into the above-mentioned reactor, and then blown with nitrogen Sweep its gas phase part. Thereafter, the temperature of the mixture was raised from 20° C. under stirring, and heated and kept at 150° C. ± 1° C. for 10 hours to conduct a reaction to generate metal oxide particles, which were then cooled to obtain bright gray fine ...
Embodiment A1-2 to A1-13 and comparative example A1-1 to A1-2
[0328] The reaction solution (1-2) to (1-13) containing the fine particles (metal oxide particles) (listed in Table 2) of the concentration listed in Table 2 was prepared in the same manner as in Example A1-1 , (c1-1) and (c1-2), the difference is, as shown in Table 1, such as changing the type and amount of raw materials charged and the reaction conditions.
[0329] The metal oxide particles in each of the reaction liquids (1-2) to (1-13), (c1-1) and (c1-2) were subjected to the various measurements and evaluations described above. The results are listed in Table 2.
[0330] Incidentally, with regard to the particles produced in Examples A1-2, A1-5, A1-9, and A1-12, it was confirmed that the Si compound or Ti compound added as the surface-treated metal compound was bonded to the surface of the particles.
[0331] Raw materials for metal oxides
parts by weight
Compounds of added metal elements
parts by weight
Raw ...
Embodiment A1-14
[0336] Using the same reaction equipment as in Example A1-1, under stirring and at room temperature, a mixture containing 3000 parts of pure water, 50 parts of cerium (III) acetate monohydrate and 0.6 parts of anhydrous copper (II) acetate was charged into the reactor , and then add 50 parts of 30% aqueous hydrogen peroxide. Subsequently, the temperature of the mixture was raised from room temperature with stirring, and then heated at 90°C±2°C for 5 hours, and then 30% aqueous hydrogen peroxide solution was added. Thereafter, the temperature was heated at the above-mentioned same temperature and kept for another 1 hour to react to generate metal oxide particles, and then cooled to obtain fine particles containing yellowish and highly transparent feeling (metal oxide particles of the present invention) The reaction liquid (1-14) of object particle), its fine particle concentration is 0.8wt%.
[0337] Then, the resulting reaction solution (1-14) is filtered with an ultrafiltrat...
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