Patent ID: 8623310
Filing Date: 2014-01-07
Classification: A23L,C01B

Abstract:
1. A process for preparing a material having the formula: where M is a cation selected from the group consisting of monovalent cations, divalent cations, and trivalent cations; H is hydrogen, P 2 O 7 is the pyrophosphate anion, and y is a number between 2.2 and 3.8; and x is a value sufficient to balance the overall charge of said compound comprising the steps of: a. mixing equal parts on a mole basis of 105-112% polyphosphoric acid and a compound having a monovalent metal cation or a divalent metal cation or a trivalent metal cation; b. heating the mixture prepared in step a.; c. mixing the heated step b. mixture.