초록 ▼

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 i

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.

대표청구항 ▼

Method of using a composition consisting essentially of a water-compatible intimate and uniform fire retardent mixture substantially free from water-insoluble ingredients and from alkali and alkaline earths and having a substantially neutral pH in aqueous solution form and being substantially free f

Method of using a composition consisting essentially of a water-compatible intimate and uniform fire retardent mixture substantially free from water-insoluble ingredients and from alkali and alkaline earths and having a substantially neutral pH in aqueous solution form and being substantially free from consitutents which are able to change such neutral pH to a basic pH, and containing in a ratio by weight substantially between about 30-50% monoammonium phosphate and 70-50% diammonium phosphate and at most up to about 2% free acid, said mixture being composed of finely divided particles in compacted solid pelletized dosage form and additionally containing an effective amount, of by weight substantially between about 0.05-0.3 part per part total monoammonium phosphate and diammonium phosphate, of a corrosion inhibitor or organic constitution provided in stable solution in a water system completely miscible with water and which is able to inhibit corrosion from both acid and basic constituents, for providing an improved composite fire retardant cellulosic product, said method comprising dissolving the compacted solid pelletized dosage form mixture in sufficient water to provide such mixture as a homogenous mixture in the form of an aqueous solution of substantially neutral pH containing in a 10 part ratio by weight substantially between about 3-7.9 parts total monoammonium phosphate and diammonium phosphate and 7-2.1 parts of water, and substantially intimately intermixing such aqueous solution with cellulosic fiber material in a 100 part ratio by weight of substantially between about 6-16 parts of such solution and 94-84 parts of such cellulosic fiber material and sufficiently to form loose fill fibers of such cellulosic material containing such solution substantially absorbed therein and having a settled bulk density of substantially between about 2.0-3.1 lbs/ft3.