Hot melt adhesive composition containing α-olefin/aromatic vinyl compound random copolymer

A hot melt adhesive composition comprising:

• 100 parts by weight of base polymer (A),
• 1 to 900 parts by weight of tackifier (B), and
• 1 to 1000 parts by weight of ethylene/α-olefin/aromatic vinyl compound random copolymer (C), wherein, in random copolymer (C), the α-olefin has from 3 to 20 carbon atoms, and the molar ratio of structural units derived from ethylene to structural units derived from α-olefin having 3 or more carbon atoms (ethylene/α-olefin) is in the range of from 100/0 to 40/60.

A hot melt adhesive composition comprising:

• 100 parts by weight of base polymer (A),
• 10 to 300 parts by weight of tackifier (B), and
• 10 to 400 parts by weight of ethylene/α-olefin/aromatic vinyl compound random copolymer (C), wherein in random copolymer (C), the α-olefin has from 3 to 20 carbon atoms, and the molar ratio of structural units derived from ethylene to structural units derived from α-olefin having 3 or more carbon atoms (ethylene/α-olefin) is in the range of from 100/0 to 40/60.