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US 5,912,196 AGranted
Flame inhibitor composition and method of application
AssigneeKimberly-Clark Corporation
InventorsFred Robert Radwanski, Henry Skoog, Terry Ray Cleveland, Phillip Sherman Warren, William Francis Cartwright
Life of this patent
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Abstract
A flame retardant composition for treating a high pulp content nonwoven web is provided. The flame retardant composition includes soluble solids formed from inorganic salts, such as ammonium polyphosphate and sulfur. The TGA range of such soluble solids is from about 175.degree. C. to about 370.degree. C. The flame retardant composition may be continuously and uniformly applied to the high pulp content nonwoven web by a non-compressive process.
Claims5
A flame retardant nonwoven web comprising:
- fibrous cellulosic material;
- and
- flame retardant water soluble solids further comprising at least one inorganic salt having an element selected from the group consisting of bromine, boron, nitrogen, sulfur, phosphorous, chlorine, and antimony wherein the percent solid add-on ranges from between about 15 to about 35, and the average char length, determined by NFPA 701 Vertical Flame Test, does not exceed 5.5 inches.
Dependencies are inferred from the claim text.