Low smoke, low toxicity carpet
First Claim
1. A low smoke, fire resistant carpet comprising:
- carpet fibers adhered to a carpet backing including a polymeric binder having fire retardant components dispersed therein;
said fire retardant components being present in a major proportion by weight in the polymeric binder and permitting the carpet to meet aircraft flammability, smoke generation and toxic gas emission standards;
said fire retardant components comprising at least a fire retardant spumescent, a catalyst, and a char former;
said backing being made from a formulation comprising a dispersion of said fire retardant components and said binder in a solvent having water as the major proportion; and
said formulation being coated on said carpet fibers and cured to provide said fire resistant carpet.
2 Assignments
0 Petitions
Reexamination
Accused Products
Abstract
A fire resistant carpet backing formulation has five components of:
a) a polyurethane dispersion;
b) fire retardant components having at least
a) ammonium polyphosphate,
b) melamine, and
c) a char former;
c) solvents including water;
d) filler, pigment and grinding aids; and
e) surfactants.
Preferred char formers are pentaerythritol and polysaccharides. The polyurethane dispersion is present in about 18-30% by weight, the fire retardant components of part (b) are present in about 39-61% by weight and the solvents of part (c) are present in about 9-25% by weight in the preferred embodiments. Nylon carpets made with this backing are fire retardant and meet the airline standards for fire safety.
38 Citations
24 Claims
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1. A low smoke, fire resistant carpet comprising:
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carpet fibers adhered to a carpet backing including a polymeric binder having fire retardant components dispersed therein;
said fire retardant components being present in a major proportion by weight in the polymeric binder and permitting the carpet to meet aircraft flammability, smoke generation and toxic gas emission standards;
said fire retardant components comprising at least a fire retardant spumescent, a catalyst, and a char former;
said backing being made from a formulation comprising a dispersion of said fire retardant components and said binder in a solvent having water as the major proportion; and
said formulation being coated on said carpet fibers and cured to provide said fire resistant carpet. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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21. The carpet according to claim 1, wherein the catalyst is an ammonium polyphosphate and the fire retardant spumescent is a melamine.
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22. The carpet according to claim 21, wherein the polymeric binder is a polyurethane.
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23. The carpet according to claim 22, wherein said formulation further comprises a filler, pigment and grinding aids mixed therein.
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24. The carpet according to claim 22, wherein said formulation further comprises a surfactant mixed therein.
Specification