Coated fabric
AssigneeGraniteville Company
InventorsJames M. McKinney, John G. Hodson
Life of this patent
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Abstract
A flame retardant, water-proof fabric useful for tenting, tarpaulins and protective clothing comprises a woven substrate formed from synthetic fibers intimately coated with a homegeneous composition of binders, flame retardants and plasticizers. The composition includes a blocked polyester/polyether urethane prepolymer which, when cured at a temperature sufficient to unblock the urethane, provides strong film integrity to bond the coating to the substrate and thereby increase the effective life of the product.
Claims40
A coated fabric which is tear resistant, abrasion resistant, water repellant and flame retardant formed of a substrate woven from yarns of synthetic fibers, a liquid coating containing flame retardant chemicals, a polymeric binder, and a thermosetting blocked urethane prepolymer applied to the woven substrate and cured by heat, whereby the thermoset coating is tightly adhered to the woven fabric.
A coated fabric formed of a substrate tightly woven from flat filaments, a liquid composition including flame retardants, a polymeric binder and a thermosetting blocked polyester/polyether urethane prepolymer applied to the substrate, and then cured by heat to unblock the urethane and adhere the thermoset coating to the substrate.
A method of making a coated fabric having tear resistance abrasion resistance, water repellance and flame retardance comprising the steps of:
- (a) providing a substrate woven from synthetic fibers,
- (b) providing a liquid composition including flame retardants, a polymeric binder and a thermosetting blocked urethane,
- (c) applying the liquid composition to the substrate,
- (d) drying the liquid composition on the substrate, and
- (e) heat curing the coated substrate sufficiently to unblock the urethane and adhere the coating to the substrate.
A method for making a coated fabric having tear resistance and abrasion resistance and being water repellant and flame retardant, said method comprising
- (a) forming a liquid composition including
- (1) a blocked polyester/polyether urethane polymer and constituting less than ten percent (10%) of the dried liquid composition;
- (2) a polymeric binder constituting less than ten percent (10%) of the dried liquid composition;
- (3) flame retardant chemicals including antimony trioxide constituting between twenty (20%) and twenty-five percent (25%) of the dried liquid composition and decabromodiphenyl oxide comprising between fifteen (15%) and twenty percent (20%) of the dried liquid composition, and zinc borate comprising between fifteen (15%) and twenty percent (20%) of the dried liquid composition;
- (4) stabilizers including epoxy resin and barium-cadmium constituting less than one percent (1%) of the dried liquid composition;
- (5) a thickening agent comprising fumed silica constituting less than one percent (1%) of the dried liquid composition;
- (6) a water repellant comprising zirconium wax constituting less than one percent (1%) of the dried liquid composition;
- (b) covering every surface of the substrate with the liquid composition;
- (c) drying the liquid composition;
- and
- (d) applying heat to the coated substrate for a period of time and at a temperature sufficient to unblock and cross-link the urethane polymer and fuse the coating on the substrate.
A method for making a coated fabric having tear resistance and abrasion resistance and being water repellant and flame retardant, said method comprising
- (a) forming a liquid composition including
- (1) a blocked polyester/polyether urethane polymer and constituting less than ten percent (10%) of the dried liquid composition;
- (2) a polymeric binder constituting less than ten percent (10%) of the dried liquid composition;
- (3) flame retardant chemicals including antimony pentoxide constituting between twenty (20%) and twenty-five percent (25%) of the dried liquid composition and decabromodiphenyl oxide comprising between fifteen (15%) and twenty percent (20%) of the dried liquid composition, and barium metaborate comprising between fifteen (15%) and twenty percent (20%) of the dried liquid composition;
- (4) stabilizers including epoxy resin and barium-cadmium constituting less than one percent (1%) of the dried liquid composition;
- (5) a thickening agent comprising fumed silica constituting less than one percent (1%) of the dried liquid composition;
- (6) a water repellant comprising zirconium wax constituting less than one percent (1%) of the dried liquid composition;
- (b) covering every surface of the substrate with the liquid composition;
- (c) drying the liquid composition;
- and
- (d) applying heat to the coated substrate for a period of time and at a temperature sufficient to unblock and cross-link the urethane polymer and fuse the coating on the substrate.
Dependencies are inferred from the claim text.