| abstract |
The present invention relates to a method for preparing a polyurethane synthetic leather having uniform fine pores therein, by coagulating a polyurethane mixture solution prepared by mixing an additive containing sucrose with a polyurethane resin composition, and then removing the additive in the coagulated polyurethane mixture solution. The present invention can not only form a smooth surface after a sanding process but also improve an air permeability and softness due to fine pores formed in the polyurethane synthetic leather. n In addition, the size and density of the fine pores can be optionally adjusted by adjusting the content of the additive, and the present invention can provide various types of synthetic leathers depending on the product use. |