Novel anhydrous sodium tripolyphosphate
AssigneeRhone-Poulenc Industries
InventorsJean-Paul Bourgeois, Frederic Couffin, Claude Magnier
Life of this patent
Estimating the term…
Abstract
A novel anhydrous sodium tripolyphosphate, well adapted as an additive for foodstuffs and detergent compositions, has an Na/P ratio of essentially 1.667.+-.0.01, an apparent density of from 0.5 to 1.1, a mean agglomerate size of less than 100 microns, a phase I content ranging from 15 to 6% by weight, is devoid of insoluble fraction, and displays zero solidification or caking in a quiescent solvent medium.
Claims7
Anhydrous sodium tripolyphosphate, having the formula Na.sub.5 P.sub.3 O.sub.10 wherein the Na/P ratio thereof is 1.667.+-.0.01, and being characterized by a less than 0.02% weight loss of water at 150.degree. C., a phase I content of from 15 to 60% by weight, being devoid of insolubles fraction and exhibiting zero solidification or caking in a quiescent solvent medium.
Dependencies are inferred from the claim text.