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US 4,153,466 AGranted
Compositions comprising phosphate salts of poly-2-oxazoline and fire retardant formulations
AssigneeThe Dow Chemical Company
InventorWilliam L. Smith
Life of this patent
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Abstract
The title compositions impart fire retardancy to and are not readily leached from various cellulosic substrates. For example, wood treated with a composition comprising a phosphate salt of poly(2-ethyl-2-oxazoline) and a 40:60 mixture of mono- and diammonium phosphate is not only rendered fire retardant but the phosphates exhibit good resistance to leaching.
Claims28
A composition comprising a phosphorylated poly-2-oxazoline having a weight average molecular weight of at least about 1000, the poly-2-oxazoline being about 25 to 90 percent phosphorylated, and an inorganic salt fire retardant formulation.
Dependencies are inferred from the claim text.