Porous sodium tri:poly:phosphate hexa:hydrate prodn.

摘要

New form of Na tripolyphosphate hexahydrate (I) with high absorptive capacity has a pore vol. of at least 0.7 cc/g, with at least 80% of the pore vol. in 0.5-3 micron pores. - Prodn. of (I) with high absorptive capacity is effected by (a) spraying anhydrous Na tripolyphosphate (II) in phase 1 form with H2O or an aq. medium; (b) spraying anhydrous Na tripolyphosphate (III) in phase 2 form with H2O or an aq. medium; (c) mixing (I) and (II); (d) suspending the mixt. in H2O or an aq. medium; and (e) drying the suspension.