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Process for the preparation of bismuth vanadate pigments, and novel bismuth vanadate pigments of high color strength
Process for the preparation of bismuth vanadate pigments, and novel bismuth vanadate pigments of high color strength
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机译:钒酸铋颜料的制备方法,以及高色强度的新型钒酸铋颜料
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摘要
An improved process for the preparation of bismuth vanadate pigments and solid solutions based on bismuth vanadate by a) mixing a solution of a bismuth (III) salt containing, if required, one or more further metal salts or a mixture thereof with the aqueous solution of a vanadate salt containing, if required, a molybdate, tungstate or sulfate salt or a mixture thereof and b) subjecting the suspension thus obtained to a subsequent aftertreatment to convert the particles first precipitated in amorphous form into crystalline compounds, wherein during the mixing and/or during the subsequent aftertreatment step fluoride ions are used.
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