Compound, a process for the preparation thereof, and a resin composition

摘要

Novel polyester compounds having a benzotriazole group of the invention are obtained by a ring-opening addition-polymerisation of lactones with the alcoholic hydroxyl group of 3-(5-chloro-2H-benzotriazol-2-yl)-5-(1,1-dimethyl-ethyl)-4-hydroxy-benzene-propanol, 3-(2H-benzotriazol-2-yl)-4-hydroxy-benzene-ethanol, 3-(5-methyl-2H-benzotriazol-2-yl)-5-(1-methyl-ethyl)-4-hydroxy-benzene-propanolbis[3-(2H-benzotriazol-2-yl)-4-hydroxy-benzene-ethanol]methane or the like. These compounds are used as ultraviolet-rays absorbents for thermoplastic resins. The resulting resin composition has an excellent light resistance and chemical resistance.