Process for the preparation of high absorptive sodium tripolypho

Details Process for the preparation of high absorptive sodium tripolypho Process for the preparation of high absorptive sodium tripolypho

1987-03-05

1988-03-29

Albrecht, Dennis

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252 91, 252174, 423315, 427215, C01B 2541, C11D 3075, C11D 716, C11D 1102

Patent

active

047342145

ABSTRACT:
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 cm.sup.3 /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.

REFERENCES:
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patent: 3054656 (1962-09-01), Cassidy
patent: 3394986 (1968-07-01), Shen
patent: 3574121 (1971-04-01), Merkenick
patent: 3639287 (1972-02-01), Gabler
patent: 3672826 (1972-06-01), Hornig
patent: 4310431 (1982-01-01), Joshi
patent: 4328114 (1982-05-01), Johnson
patent: 4362641 (1982-12-01), Peterson
patent: 4454054 (1984-06-01), Landgraber

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