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A process for the preparation of a high absorbency sodium tripolyphosphate hexahydrate and tripolyphosphate thus prepared.
A process for the preparation of a high absorbency sodium tripolyphosphate hexahydrate and tripolyphosphate thus prepared.
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机译:由此制备高吸收性的三水合磷酸三钠六水合物和三水合磷酸酯的方法。
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摘要
Solid, free-flowing, essentially nonfriable powdery detergent particulates of recrystallized sodium tripolyphosphate hexahydrate having high absorption capacity and a pore volume of at least 0.70 cm3/g, at lest 80% of the intercrystalline porosity thereof comprising pore sizes ranging from 0.5 mu m to 30 mu m, are prepared by (i) spraying water or an aqueous medium over a first fraction of anhydrous sodium tripolyphosphate, the majority of which fraction comprises phase 1 tripolyphosphate, (ii) spraying water or an aqueous medium over a separate second fraction of anhydrous sodium tripolyphosphate, which second fraction essentially consists of phase 2 triplyphosphate, (iii) intimately admixing said first and said second sprayed fractions, (iv) suspending the resulting admixture in water or an aqueous medium, and then (v) drying the resulting suspension, e.g., by atomization.
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