Patent ID: 8883910

Claim:
A resin composition for coating, comprising: 35-65 wt % of a high-molecular weight polypropylene resin (A) having a weight average molecular weight of 100,000-300,000 and an isotactic chain molar fraction, L, as defined in the following Mathematical Formula 1, of 0.30-0.70; 30-60 wt % of a low-molecular weight polypropylene resin (B) having a weight average molecular weight of 10,000-50,000 and an isotactic chain molar fraction, L, as defined in the following Mathematical Formula 1, of 0.30-0.70; and 0.1-5.0 wt % of a highly crystalline, low-molecular weight polypropylene resin (C) having a weight average molecular weight of 5,000-50,000 and an isotactic chain molar fraction, L, as defined in the following Mathematical Formula 1, of 0.70-0.75 1 T m - 1 T m 0 = - R Δ ⁢ ⁢ H U ⁢ ln ⁢ ⁢ L [ Mathematical ⁢ ⁢ Formula ⁢ ⁢ 1 ] wherein T m is melting point of a resin, T m 0 is melting point of a perfect crystal, R is the gas constant, ΔH u is melting enthalpy per mol of crystallizable units, and L is an isotactic chain molar fraction.