Rapidly hexahydrated sodium tripolyphosphate detergent compositi

Details Rapidly hexahydrated sodium tripolyphosphate detergent compositi Rapidly hexahydrated sodium tripolyphosphate detergent compositi

1985-10-15

1987-05-12

Lieberman, Paul

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

25217421, 252DIG14, 423315, C11D 1700

Patent

active

046648380

ABSTRACT:
Na tripolyphosphate compositions very rapidly hexahydrated, e.g., in water, and well suited for detergency applications, are comprised of a mass of sodium tripolyphosphate particulates prehydrated with a plurality of hexahydrated sodium tripolyphosphate crystals homogeneously distributed therethrough, (i) said particulates displaying a ratio of phase I crystalline form content to the total content of the phase I plus phase II crystalline forms of at least 50%, (ii) a homogeneous distribution of phase I crystalline form throughout both said particulates and said mass, (iii) a particle size distribution such that the average Rosen-Rambler-Bennett particle diameter ranges from 130 to 250.mu., with the maximum amount by weight of particles larger than 630.mu. in diameter being about 5% and the maximum amount by weight of particles smaller than 25.mu. in diameter being about 20%, (iv) a content in water ranging from about 0.4 to 4% by weight, said water content essentially consisting of the bound water constituting said hexahydrated sodium tripolyphosphate crystals, and (v) with each crystal population of particle sizes being homogeneously distributed throughout said mass.

REFERENCES:
patent: 3356447 (1967-12-01), Tafler
patent: 3397947 (1968-08-01), Shaver
patent: 4326979 (1982-04-01), Bus et al.
patent: 4511487 (1985-04-01), Pruhs et al.

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