| abstract |
A grained leather-like sheet, which is provided with a fiber base material, a polyurethane skin layer attached to one side of the fiber base material, and a polyamine bonding the fiber base material and the polyurethane skin layer The grain-like leather-like sheet of the base formate adhesive layer, wherein the polyurethane adhesive layer contains water-based polyurethane as the main body, and contains 0.01 to 0.45% by mass of sulfate or alkyl in terms of sulfur atoms. Sulfate salt, and the color due to BCG (bromocresol green) solution is equivalent to pH 4.8 or less. |