Synthetic resin composition and automotive interior/exterior material

A synthetic resin composition comprising a hindered amine compound (A) having a partial structure represented by the following general formula (1):

• (wherein R1, R2, R3 and R4 each independently represents a lower alkyl group having 1 to 4 carbon atoms, and R represents an alkyl group having 1 to 18 carbon atoms, the alkyl group being optionally substituted by a hydroxy group, or a cycloalkyl group having 5 to 8 carbon atoms) in an amount of 0.01 to 20 parts by mass with respect to 100 parts by mass of the synthetic resin;
• and a benzoate compound (B) represented by the following general formula (2):
• (wherein R5 and R6 each independently represents an alkyl group having 1 to 8 carbon atoms, and R7 represents an alkyl group having 1 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, an alkyl-, dialkyl- or trialkyl-aryl group having 7 to 30 carbon atoms, or an arylalkyl group having 7 to 30 carbon atoms) in an amount of 0.01 to 20 parts by mass with respect to the same, at a component mass ratio of (A)/(B) between 1/1 and 1/5.