| 摘要 |
PURPOSE:The titled composition of a solventless type providing a film of coating having improved durability, having short drying period, capable of being applied thickly, obtained by blending a polyol component containing a castor oil, etc. with an aromatic diamine and a xylene resin in a specific ratio to give a main agent, and mixing the main agent with a polyisocyanate. CONSTITUTION:(A) A main agent component comprising (i) 15-90wt% castor oil, (ii) 0-80wt% polyol which is a reaction product of a polyhydric alcohol and an alkylene oxide, and has 100-600 hydroxyl number and <=1,100 number- average molecular weight, (iii) 0.1-20wt% aromatic diamine (e.g., 4,4'- diaminodiphenylmethane, (iv) 3-40wt% xylene resin having 200-3,000 number- average molecular weight, and (v) 1-20wt% smoothness auxiliary (e.g., zeolite powder, etc.) is blended with (B) a curing agent component consisting of a polyisocyanate (e.g., tolylene diisocyanate, etc.) in a ratio of NCO/OH of 0.6-2.0/1.0, to give the aimed composition.
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