BENZOTRIAZOLES AND THEIR USE AS UV LIGHT STABILISERS

摘要

Compounds which have a benzotriazole and a hindered amine moiety in the same molecule are typified by the formula A: wherein at least one of G2, R1 or R2 contains a hindered amine moiety are extremely effective light stabilizers having both the UV absorbing activity of a benzotriazole and the light stabilizing efficacy of a hindered amine in the same molecule. These compounds are effective stabilizers for thermoset resin compositions, thermoplastic resin compositions, for photographic applications, for pigmented or dyed polypropylene, polyamide or polyester fibers, and for white, dyed, dipped, unscented and/or scented candle wax against discoloration and fading incorporated therein alone or in combination with an antioxidant.