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US 4,038,451 AGranted
Compositions comprising polyalkylenepolyamines and a mixture of mono- and diammonium phosphates as fire retardants for cellulosic substrates
AssigneeThe Dow Chemical Company
InventorsFrederick L. Brown, James L. Potter
Life of this patent
Estimating the term…
Abstract
Cellulosic substrates, e.g. wood, textiles or paper, have increased fire resistance when treated with an aqueous solution of a polyalkylenepolyamine (e.g. polyethylenimine) and a mixture of mono- and diammonium phosphate.
Claims10
A composition comprising a polyalkylenepolyamine having a number average molecular weight between about 1,000 and about 100,000 and a mixture of monoammonium phosphate and diammonium phosphate.
Dependencies are inferred from the claim text.