| 摘要 |
PURPOSE: An aqueous polyurethane resin, its preparation method and a method for preparing artificial leather using the polyurethane resin are provided, to obtain the aqueous polyurethane resin with the alkali resistance and the organic solvent resistance without organic solvent. CONSTITUTION: The aqueous polyurethane resin is prepared by adding dimethylol propionic acid to the blend comprising 0.2-1 mol of a mixture of polytetramethylene ether glycol and polyethylene glycol with an average molecular weight of 400-3,000 and 2 mol of an aliphatic diisocyanate and 0.2-1 mol of an aliphatic diamine; mixing them with triethylamine; and emulsifying the mixture by using a self-emulsifier. The leather is prepared by mixing the polyurethane resin with a crosslinking agent having a carbodiimide represented by -N=C=N=1; and infiltrating the obtained one into textile or coating the obtained one on the surface and the back face of textile.
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