| abstract |
Conventionally known urethane resins having a hydroxy group may not have sufficient peel resistance from a metal substrate. The organic polymer of the present invention is a reaction product (I) of a urethane prepolymer (A) having an isocyanate group and a compound (B) represented by the formula (1), and a polyamine compound (II). The urethane prepolymer (A) is a reaction product of a polyol (a1) and a polyisocyanate (a2), and the polyol (a1) is a high molecular weight polyol (a1-1) and a low molecular weight polyol (a1-2). )including. [In the formula (1), R 1 independently represents a single bond or a hydrocarbon group having 1 to 10 carbon atoms. R 2 represents a hydrocarbon group having 1 to 50 carbon atoms, and −CH 2 − contained in the hydrocarbon group may be replaced with −O −. L 1 represents −O—CO—O−. ] |