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US4334933A Process for preparing stable inorganic pigment 失效
制备稳定无机颜料的方法

Process for preparing stable inorganic pigment
摘要:
A process for preparing a stable inorganic pigment coated with a fine amorphous silica which comprises forming a silica sol in an aqueous prepared slurry of an inorganic pigment by reacting an alkali silicate solution with one or more acid gases so that a fine silica sol covers the surfaces of the particles of the inorganic pigment.
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