Flame retardant with improved durability comprising an alkali metal polyantimonate and cellulosic materials treated therewith in the absence of chlorine
AssigneeThe Harshaw Chemical Company
InventorDestin A. LeBlanc
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Abstract
A process for improving the flame-retardant properties of cellulose containing fibrous materials in the absence of halogen compounds which comprises treating said fibrous materials with an effective amount of a colloidal aqueous dispersion of an alkali metal polyantimonate containing a mole ratio of alkali metal to antimony in the dispersion of at least about 0.3:1, and drying said materials is described.
Claims22
A process for improving the flame-retardant properties of cellulose-containing fibrous materials in the absence of halogen compounds which comprises treating said fibrous materials with an effective amount of a colloidal aqueous dispersion of an alkali metal polyantimonates containing a mole ratio of alkali metal to antimony in the dispersion of at least about 0.3:1, and drying said materials.
A process for improving the flame-retardant properties of cellulose-containing fibrous materials in the absence of halogen compounds which comprises
- (a) impregnating said materials with an effective amount of a colloidal aqueous dispersion of an alkali metal polyantimonate and from about 0.5 to 5% by weight of an organic polymeric binder, the mole ratio of alkali metal to antimony in the dispersion being at least 0.45:1, and
- (b) drying said impregnated material.
Flame retardant cellulose-containing fibrous materials treated with a colloidal aqueous dispersion of an alkali metal polyantimonate containing a mole ratio of alkali metal to antimony of at least 0.3:1.
Dependencies are inferred from the claim text.