| 摘要 |
Fire retardant compositions in pelletized and in aqueous solution form constituting mixtures containing in a ratio by weight about 30-50% monoammonium phosphate and 70-50% diammonium phosphate, and optionally a corrosion inhibitor, which in solution form are of substantially neutral pH and contain in a 10-part ratio by weight about 3-7.9 parts total monoammonium phosphate and diammonium phosphate and 7-2.1 parts of water, and optionally a surfactant; methods of using such compositions in solution form for providing composite fire retardant cellulosic products in which the solution is intimately intermixed with cellulosic fiber material to form loose fibers thereof containing such solution substantially absorbed therein, e.g. in a 100-part ratio by weight of about 6-16 parts of solution and 94-84 parts of cellulosic material and having a bulk density corresponding to a settled bulk density of about 2.0-3.1 lbs/ft3, optionally with the addition of a finely divided solid supplemental fire retardant material to form corresponding loose fibers of such cellulosic material also containing such supplemental fire retardant material substantially distributed thereon, e.g. in a 100-part ratio by weight of about 6-16 parts of solution, 1-9 parts of supplemental fire retardant material and 93-75 parts of cellulosic material; and composite fire retardant cellulosic products produced thereby.
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