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The FeOOH yellow type glossy pigment, the production manner and its
The FeOOH yellow type glossy pigment, the production manner and its
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机译:FeOOH黄型光泽颜料,生产方式及其用途
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PURPOSE: To produce a miceous or platy yellow glossy δ-FeOOH pigment having fanciness used in the fields of a coating material, various fillers, cosmetics, etc., without using a hydrothermal treating apparatus. ;CONSTITUTION: An aq. alkali soln. is added to an aq. ferrous salt soln. at 40-100°C in an inert gaseous atmosphere by a larger amt. than the amt. required to neutralize the ferrous salt soln., neutralization is carried out and the resultant soln. is cooled to ≤50°C and oxidized with an oxidizing agent to produce the objective yellow glossy δ-FeOOH pigment having 0.5-15μm average particle diameter and 10-300nm thickness. The average plate shape ratio is within the range of 30:1 to 100:1.;COPYRIGHT: (C)1996,JPO
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