| abstract |
PURPOSE: To obtain a polymeric material composition with improved stability to light, by incorporating a polymeric material with a hindered amine light stabilizer and specific alkylidene bus (benzotriazolephenol) compound. n CONSTITUTION: The objective composition can be obtained by incorporating (A) 100pts.wt. of a polymeric material such as polypropylene or polyethylene with (B) 0.001W5pts.wt. of at least one sort of a hindered amine light stabilizer (e.g., 4-benzolyoxy-2,2,6,6-tetramethylpiperizine), (C) 0.001W5pts.wt. of at least one sort of compound of formula (RX is H or alkyl; R 2 is alkyl or aralkyl; X is H, halogen, alkyl, etc.) [e.g., 2,2'methylenebis(4-methyl-6- benzotriazolylphenol)] and, preferably, (D) such ingredients as phenolic antioxidant, sulfur-based antioxidant or phosphorus-contg. compound. n COPYRIGHT: (C)1986,JPO&Japio |