Patent ID: 11939430
Assignee: J.M. HUBER CORPORATION
Field: Materials, metallurgy (Chemistry)
Classification: CPC C | IPC C

Claim 13:
14. A process for producing a polyphosphate composition, the process comprising:
(a) continuously introducing a phosphate compound into a polymerization vessel, the phosphate compound comprising melamine magnesium phosphate and/or melamine zinc phosphate;
(b) polymerizing the phosphate compound at a temperature in a range from about 250 to about 450° C. for a time period sufficient to form the polyphosphate composition; and
(c) continuously discharging the polyphosphate composition from the polymerization vessel, wherein the polyphosphate composition comprises:
at least about 8 wt. % of a polyphosphate, the polyphosphate comprising a melamine poly(magnesium phosphate) and/or a melamine poly(zinc phosphate); and
less than or equal to about 35 wt. % of the phosphate compound.