| abstract |
The invention provides a self-extinction polyurethane resin and a preparation method thereof. The resin is mainly prepared from raw materials such as polyether polyol, isocyanate, dihydric alcohol, crylic acid grafting substances, a hydrophilic chain extender, a cross-linking agent and 5-7 parts of an amino chain extender. According to the self-extinction polyurethane resin provided by the invention, as the crylic acid grafting substances which can absorb light can extinct light in a chemical manner, leather coated with the self-extinction polyurethane resin has the light extinction effect with natural color and gloss, and meanwhile through the addition of the crylic acid grafting substances, the water resistance and the solvent resistance of the self-extinction polyurethane resin are greatly improved. |