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US 4,333,914 AGranted
Method for making aluminum trimetaphosphates from powder reactants
AssigneePPG Industries, Inc.
InventorsJames E. Neely, Jr., Chia-Cheng Lin, Charlene A. Falleroni, Annette Moff
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Abstract
A method for preparing aluminum trimetaphosphate comprising various chain form polyphosphate species by heating a mixture of aluminum hydroxide and ammonium phosphate is disclosed.
Claims6
A method for making aluminum trimetaphosphate comprising a mixture of chain form polyphosphate species comprising the steps of:
- a. mixing thoroughly in approximately stoichiometric quantities
- (1) an aluminum hydroxide compound and
- (2) a phosphate compound capable of reacting with the aluminum hydroxide compound to form aluminum trimetaphosphate;
- and
- b. heating the mixture at a sufficient temperature for a sufficient time to convert the reactants to a product which comprises a mixture of chain form polyphosphate species of aluminum trimetaphosphate.
2 more elements
Dependencies are inferred from the claim text.