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OwnerNicola N M Gurusinghe, Sankarapillai Neelakandtapillai Hari +2inventors
InventorsNicola N M Gurusinghe, Sankarapillai Neelakandtapillai Hari, Isuru Jayasinghe, Selvaraj Princy
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A polyurethane-coated fabric product, particularly a polyurethane-coated glove, has a fabric liner and, on the surface of the liner, a microporous foam layer comprising polyurethane and a bifunctional sulphur-containing alkoxysilane. The microporous foam layer exhibits increased abrasion resistance, durability and increased resistance to water penetration. Preferably, the bifunctional sulphur-containing alkoxysilane is bis(triethoxysilylpropyl)tetrasulphane. The polyurethane-coated fabric product is manufactured by a method that includes providing a fabric liner, applying a io coating to at least part of the surface of the liner, wherein the coating comprises a solution, in a polar aprotic solvent, of a polyurethane resin and a bifunctional sulphur-containing alkoxysilane, treating the coated fabric with water, thereby causing the polyurethane to coagulate and form a microporous foam layer on the fabric liner, and drying the polyurethane-coated fabric is product.
A polyurethane-coated fabric product comprising a fabric liner and, on the surface of the liner, a microporous foam layer comprising polyurethane and a bifunctional sulphur-containing alkoxysilane.
A method according to 7, wherein the bifunctional sulphur-containing alkoxysilane is selected from bis(triethoxysilylpropyl)disulphane, bis(triethoxysilylpropyl)trisulphane, bis(triethoxysilylpropyl)tetrasulphane and bis(triethoxysilylpropyl)-pentasulphane and mixtures of any two or more of these.
Dependencies are inferred from the claim text.