Patent ID: 8101684

Claim:
A thermoplastic resin composition for sealing a solar cell comprising: (A) 10 to 50 parts by weight of a propylene-based polymer satisfying the following requisite (a) and (B) 50 to 90 parts by weight of a propylene-based copolymer satisfying the following requisite (b) (provided that a total amount of (A) and (B) is 100 parts by weight); (a): a melting point observed in differential scanning calorimetry is 100° C. or higher, (b): MFR measured at 230° C. and a load of 2.16 kg according to ASTM D-1238 falls in a range of 0.01 to 100 g/10 minutes, and at least one of the following requisites (b-1) and (b-2) is satisfied; (b-1): a syndiotactic triad fraction (rr fraction) measured by a 13 C-NMR method is 60% or more and (b-2): a structural unit derived from propylene is contained in an amount of 55 to 90 mole %, and a structural unit derived from at least one olefin selected from α-olefins having 2 to 20 carbon atoms (excluding propylene) is contained in an amount of 10 to 45 mole % (provided that the total of the structural unit derived from propylene and the structural unit derived from at least one olefin selected from α-olefins having 2 to 20 carbon atoms (excluding propylene) is 100 mole %); and an intrinsic viscosity [η] (dL/g) measured in decalin at 135° C. and MFR (g/10 minutes, 230° C., load: 2.16 kg) described above satisfy a relational equation: 1.50×MFR (−0.20) ≦[η]≦2.65×MFR (−0.20) and 0.01 to 10 parts by weight of a coupling agent (X) based on total 100 parts by weight of the propylene-based polymer (A) and the propylene-based copolymer (B).