| 摘要 |
PURPOSE:To obtain the titled synthetic leather able to be wrinkled, by applying a polyether polyurethane having a specific modulus to a fiber texture of a woven or knit fabric, etc., laminating a microporous coating layer and laminating a top-coat interposing a specific binder coat therebetween. CONSTITUTION:A polyether polyurethane containing polypropylene glycol as a polyol component and having a 100% modulus of 150-400kg/cm<2> is applied to a fiber texture of a woven or knit fabric, etc., and coagulated. The coagulated layer is coated with a microporous coating layer composed of a polyether polyurethane containing polypropylene glycol as a polyol component and having a 100% modulus of 15-100kg/cm<2> to obtain a fibrous substrate. Separately, a binder coat composed of a polyether polyurethane containing polytetramethylene glycol as a polyol component and having a 100% modulus of 15-50kg/cm<2> is laminated on a top-coat composed of a polycarbonate polyester polyurethane having a 100% modulus of 200-600kg/cm<2> with yield value. The above microporous substrate is hot-pressed to the surface of the laminate and the product is crumpled to obtain the objective wrinkled synthetic leather.
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