Fire retardant concentrates and methods for preparation thereof

Details Fire retardant concentrates and methods for preparation thereof Fire retardant concentrates and methods for preparation thereof

A - Human Necessities

62

D

31/6

A62D 1/00 (2006.01)

Patent

CA 1333215

The present invention is directed to an aque- ous concentrate adapted to be diluted with water and used in fire control. The concentrate exhibits a viscosity of less than about 2000 centipoise and con- taining between about 0.75% and about 6% by weight a thickening agent and at least about 24% by weight of certain fire retardants, particularly diammonium phos- phate, diammonium sulfate, a blend of diammonium phos- phate and diammonium sulfate, a blend of monoammonium phosphate and diammonium phosphate having a nitrogen to phosphorus ratio of at least about 1.25, and a blend of monoammonium phosphate, diammonium sulfate and diammon- ium phosphate having a nitrogen to phosphorus ratio of at least about 1.25. Processes for the preparation of such concentrates and for use thereof are also dis- closed.

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