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AssigneeFujikura Rubber Works, Ltd.
InventorsIsamu Negishi, Kazumi Hunyu
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A base fabric for polyurethane-coated fabics which comprises a layer of polyurethane prepolymer under half cross-linked conditions partially formed on at least one surface of the water repellent-unfinished fabric. A process for the production of a base fabric for polyurethane-coated fabrics, which comprises partially coating a solution of polyurethane prepolymer containing a cross-linking agent on at least one surface of the water repellent-unfinished fabric, drying and aging until the polyurethane prepolymer is caused to be under half cross-linked conditions. A polyurethane-coated fabric, which comprises a one-pack polyurethane layer with fine air-permeable pores formed on a water repellent-unfinished base fabric having partially formed on at least one surface thereof a layer of a two-pack polyurethane resin, the fabric and one-pack polyurethane layer being adhered to the layer of the two-pack polyurethane resin as a result of a cross-linking reaction of the polyurethane prepolymer. A process for the production of a polyurethane-coated fabric, which comprises coating, on a base fabric which was prepared by partially coating a solution of polyurethane prepolymer containing a cross-linking agent on at least one surface of a water repellent-unfinished fabric, drying and aging in order to modify the polyurethane prepolymer solution to a half cross-linked polyurethane prepolymer layer, a one-pack polyurethane resin solution having incorporated therein powders capable of dissolving in an eluent, but incapable of dissolving in any solvent of the resin solution, drying, aging in order to adhere and integrate the two-pack polyurethane prepolymer layer, the one-pack polyurethane resin layer and the fabric with each other, and dipping in eluent.
A process for the production of base fabric for polyurethane-coated fabrics, which comprises partially coating a solution of polyurethane prepolymer containing a cross-linking agent on at least one surface of a water repellent-unfinished fabric at coverage rate of 10 to 30 g/m.sup.2, drying at a temperature between 70.degree. and 150.degree. C. for 30 seconds to 15 minutes and aging at a temperature between room temperature and 70.degree. C. for less than 48 hours until said polyurethane prepolymer is caused to be under half crosslinked conditions.
A process for the production for polyurethane-coated fabric, which comprises coating on a base fabric, which base fabric was prepared by drying and aging a solution of polyurethane prepolymer containing a cross-linking agent which was partially coated on at least one surface of a water repellent-unfinished fabric in order to modify the polyurethane prepolymer solution to a half cross-linked polyurethane prepolymer layer, a one-pack polyurethane resin solution having incorporated therein powders capable of dissolving in an eluent and which are incapable of dissolving in any solvent of the resin solution, drying and aging in order to cross-link the polyurethane prepolymer layer into a two-pack polyurethane resin layer and dipping in an eluent in order to form a one-pack polyurethane resin layer with fine air-permeable pores.
A polyurethane-coated fabric, which comprises a one-pack polyurethane layer with fine air-permeable pores formed on a water repellent-unfinished base fabric having partially formed on at least one surface thereof a layer of a two-pack polyurethane resin, the fabric and the one-pack polyurethane layer being adhered to the layer of the two-pack polyurethane resin as a result of a cross-linking reaction of the polyurethane prepolymer.
Dependencies are inferred from the claim text.