Patent ID: 8525017

Claim:
A solar battery sealing material comprising 1 to 30 parts by weight of polypropylene (i) which has the content of a structural unit derived from propylene of more than 90 mol %; and 70 to 99 parts by weight of a propylene-ethylene-based copolymer (ii) which has a structural unit derived from propylene of 45 to 90 mol %, a structural unit derived from ethylene of 10 to 25 mol %, and a structural unit derived from α-olefin having 4 to 20 carbon atoms of 0 to 30 mol % (total amount of (i) and (ii) is 100 parts by weight), wherein the solar battery sealing material further comprises an ethylene-α-olefin copolymer (B) having the molecular distribution (Mw/Mn) of 3 or less within the amount of 5 to 40 parts by weight, based on 95 to 60 parts by weight of the total amount of (i) and (ii) (total amount of (i), (ii), and (B) is 100 parts by weight), wherein the ethylene-α-olefin copolymer (B) has a structural unit derived from ethylene of 80 to 90 mol %.