Thermoplastic elastomer composition

A thermoplastic elastomer composition comprising:

• a thermoplastic elastomer having a carbonyl-containing group and a nitrogen-containing heterocycle in a side chain thereof;
• and
• an amino group-containing compound,
• wherein said amino group-containing compound is selected from the group consisting of methylamine, ethylamine, propylamine, butylamine, hexylamine, octylamine, nonylamine, decylamine, dodecylamine, tridecylamine, tetradecylamine, pentadecylamine, hexadecylamine, cetylamine, laurylamine, stearylamine, oleylamine, dimethylamine, trimethylamine, benzyldimethylamine, methylenediamine, ethylenediamine, tetramethyl-1,6-hexanediamine, xylylenediamine, tetramethylxylylenediamine, diethylenetriamine, diethylaminopropylamine, N-aminoethylpiperazine, tris(dimethylaminomethyl)phenol, triethylenetetramine, N,N′-dimethylethylenediamine, N,N′-diethylethylenediamine, N,N′-diisopropylethylenediamine, N,N′-dimethyl-1,3-propanediamine, N,N′-diethyl-1,3-propanediamine, N,N′-diisopropyl-1,3-propanediamine, N,N′-dimethyl-1,6-hexanediamine, N,N′-diethyl-1,6-hexanediamine, N,N′,N″-trimethylbis(hexamethylene)triamine, dipyridylamine, dipyridyl, ethylenedipyridyl, trimethylenedipyridyl, phenazine, purine, pteridin, dipyridylamine, 1,2-bis-(4-pyridyl)-ethane, 2 (or 4)-(β-hydroxyethyl)-pyridine, 2 (or 4)-(2-aminoethyl)-pyridine, 2 (or 4)-aminopyridine, 2,6-diaminopyridine, 2-amino-6-hydroxypyridine, 6-azathymine, metaphenylenediamine, diaminodiphenylmethane, diaminodiphenylsulfone, 3-amino-1,2,4-triazole, polyamide, polyurethane, urea resin, melamine resin, polyvinylamine, polyallylamine, polyacrylamide, polymethacrylamide, polyaminostyrene, and amino group-containing polysiloxane,
• wherein one or more hydrogen atoms of the amino group-containing compound can be substituted by an alkyl group, an alkylene group, an aralkylene group, an oxy group, an acyl group or a halogen atom, and a hetero atom can be added into a skeleton of the amino group-containing compound.