| 摘要 |
<p>A method for producing a polyurethane molding is provided to increase productivity and maintain high weather resistance of the molding by reacting a polyols containing component and a polyisocyanate component under no-water conditions. A polyols containing component includes a polyether polyols in which hydroxy group is 15 to 60mgKOH/g, and a chain extender in which molecular weight is 60 to 200 and a functional group is 2 to 4. A polyisocyanate component includes 19 to 28 weight% of NCO having an aromatic polyisocyanate and modification substances of the aromatic polyisocyanate. The polyols containing component and the polyisocyanate component are reacted with each other under catalyst without water and are solidified for less than 10 sec, wherein the catalyst contains more than one kind selected from a group having organic acid bismuth, organic acid tin, organic acid zinc, diazobicyclo-alkene, and salt.</p> |
