US 9,802,384 B2 · Fire retardant laminates

Abstract

Fire retardant laminates including a textile layer, a protective layer, and a fire retardant are provided. The protective layer includes a porous membrane and a coating layer. The porous membrane is positioned between the textile layer and the coating layer. The fire retardant includes one or more phosphonate esters of the general formula: where n=0 or 1, R1 and R2 are C1-C4 alkyl, R3 is H or C1-C4 alkyl, and R4 is a linear or branched alkyl. At least a portion of the phosphonate ester in the fire retardant laminate resides in the coating layer. The fire retardant laminates are suitable for use in protective garments that provide full flammability and burn protection, even after exposure to flammable materials such as petroleum, oils, and lubricants. A method of rendering the fire retardant laminate fire retardant is also provided.

Claims37

Dependent claims

A fire retardant laminate comprising:

a first textile layer;
a first porous membrane;
a coating layer, said porous membrane being positioned between said first textile layer and said coating layer, and wherein the first porous membrane and coating layer form a protective layer;
and
a fire retardant comprising one or more phosphonate esters having the general formula:
wherein n=0 or 1, R1 and R2 are C1-C4 alkyl, R3 is H or C1-C4 alkyl, and R4 is a linear or branched alkyl,
wherein 1 wt % to 5 wt % of the phosphorus present as phosphonate ester in the fire retardant laminate resides in the first porous membrane and coating layer, and
wherein said fire retardant at least partially penetrates said coating layer.

5 more elements

Dependencies are inferred from the claim text.

Fire retardant laminates

Life of this patent

Fire retardant laminates

Life of this patent

Abstract

Claims37