PURPOSE: To obtain a material for a pattern having excellent quality and productivity by using a composition mixed with 0.1W10wt% gelatin to a urea.

CONSTITUTION: The composition mixed with 0.1W10wt% gelatin to the urea is used as the material for the pattern. In this case, the addition of ≤0.1% gelatin has only a little effect for reducing the surface defect, and ≥10% requires a long time for solidification. Then, in case of mixing the gelatin with the urea, both powers are mixed under heating. In this way, by mixing the prescribed quantity of the gelatin, the excellent material for the pattern having a little surface defects and shrinkage ratio, and short solidifying time, is obtd.