Ultraviolet absorber for synthetic resin and synthetic resin composition containing the same

An ultraviolet absorber for synthetic resins, comprising a triazine compound represented by general formula (I) shown below

• wherein (R represents an alkyl group having 1 to 4 carbon atoms, n is 0 or an integer of up to 2, and X represents a group selected from the group consisting of (a) and (d) below:
• wherein (R1 represents an aliphatic group having 5 to 60 carbon atoms, which is a group selected from the group consisting of an alicyclic group and an alkyl group having an alicyclic group at the terminal or in the chain thereof, when the aliphatic group has 5 to 8 carbon atoms;
• a group selected from the group consisting of an alicyclic group, and an alkyl group having an alicyclic group at the terminal or in the chain thereof, when the aliphatic group has 9 to 19 carbon atoms;
• or
• a group selected from the group consisting of an alicyclic group, and an alkyl group having an alicyclic group at the terminal or in the chain thereof, when the aliphatic group has 20 to 60 carbon atoms;
• R′ represents an aliphatic diyl group having 5 to 60 carbon atoms, which is a group selected from the group consisting of an alicyclic group and an alkanediyl group having an alicyclic group at the terminal or in the chain thereof, when the aliphatic group has 5 to 8 carbon atoms;
• a group selected from the group consisting of an alicyclic group, and an alkanediyl group having an alicyclic group at the terminal or in the chain thereof, when the aliphatic group has 9 to 19 carbon atoms;
• or
• a group selected from the group consisting of an alicyclic group, and an alkanediyl group having an alicyclic group at the terminal or in the chain thereof, when the aliphatic group has 20 to 60 carbon atoms;
• R and n have the same meaning as those described in the general formula (I).