abstract |
The present invention relates to a kind of aqueous polyurethane coatings and preparation method thereof, belong to technical field of aqueous paint.The present invention passes through in the aqueous polyurethane coating that is prepared, by the modifying agent for introducing cyano-containing, the problem of being formd between polyalcohol and isocyanates and wear network altogether, improve the ageing-resistant performance of aqueous polyurethane coating under the high temperature conditions, avoiding coating discoloration. |