摘要:
The invention provides a leather-like sheet material which is excellent in surface appearance, texture and physical properties and considerate of the environment; a process for the production thereof; and interior, clothing, and industrial materials made by using the same. A leather-like sheet material made from a nonwoven fabric which is constituted of ultra-fine fibers having a mean single-fiber fineness of 0.001 to 0.5 dtex and impregnated with a self-emulsifiable polyurethane, wherein the self-emulsifiable polyurethane and the ultra-fine fibers do substantially not adhere closely to each other, the moieties of the polyurethane have a nonporous structure, and the polyurethane has a structure crosslinked by siloxane bond in the molecular structure.
摘要:
The invention provides a leather-like sheet material which is excellent in surface appearance, texture and physical properties and considerate of the environment; a process for the production thereof; and interior, clothing, and industrial materials made by using the same. A leather-like sheet material made from a nonwoven fabric which is constituted of ultra-fine fibers having a mean single-fiber fineness of 0.001 to 0.5 dtex and impregnated with a self-emulsifiable polyurethane, wherein the self-emulsifiable polyurethane and the ultra-fine fibers do substantially not adhere closely to each other, the moieties of the polyurethane have a nonporous structure, and the polyurethane has a structure crosslinked by siloxane bond in the molecular structure.
摘要:
This invention provides a moisture-permeable, waterproof film characterized in that it consists of two or more resin layers comprising, as polymerizing components, bishidroxyalkyl aliphatic acid and alkyleneglycol, said bishydroxyalkyl aliphatic acid content is 0.08 mmol/g to 0.5 mmol/g, at least a part of said alykyleneglycol is polyethylene glycol contained in an amount of 40 wt % to 80 wt % based on said solid resin, and a moisture permeability by JIS L-1099 “Potassium Acetate Method” (B-1 method) at average film thickness of 20 micrometers being not less than 3×103 g/m2·24 h and not more than 200×103 g/m2·24 h, and a moisture-permeable waterproof composite material to which said moisture-permeable, waterproof film is provided at least on one surface of a substrate material and its moisture permeability by JIS L-1099 “Potassium Acetate Method” (B-1 method) being not less than 1×103 g/m2·24 h and not more than 50×103 g/m2·24 h. This invention makes use of a polymer having excellent moisture permeability, waterproofness durability and capability of being made aqueous, and accordingly, this invention provides a moisture-permeable, waterproof film and a composite material which can be manufactured by an ecological process.