Weather resistance improver, weather resistance improver-containing resin composition for coating metal nanowire-containing layers, and metal nanowire-containing laminate

A weather resistance improver comprising a compound (A) and at least one of a compound (B) and a compound (C):

• compound (A):
• a compound represented by general formula (1) or (2) below general formula (1)
• in general formula (1), R1 represents a hydrogen atom, an alkyl group of 1 to 12 carbon atoms, or a (di)carboxyalkyl group having an alkyl group of 1 to 3 carbon atoms, general formula (2)
• in general formula (2), R2 represents a hydrogen atom, an alkyl group of 1 to 12 carbon atoms, or a (di)carboxyalkyl group having an alkyl group of 1 to 3 carbon atoms,
• compound (B):
• gallic acid, a gallic acid derivative, or tannic acid
• compound (C):
• a compound represented by general formula (3) below general formula (3)
• in general formula (3), X represents an oxygen atom or a sulfur atom, R3 represents a hydrogen atom, an acetyl group, a pyrazole group, or an aminothiazolyl group, R4 represents an alkyl group of 1 to 4 carbon atoms, or a benzothiazolyl group, and R5 represents an alkyl group of 1 to 4 carbon atoms, or an isobutyric acid alkyl ester group having an alkyl group of 1 to 4 carbon atoms.