STABILIZER FOR ORGANIC POLYMERIC MATERIAL AND ORGANIC POLYMERIC MATERIAL COMPOSITION

摘要

A stabilizer composition for organic polymeric materials which comprises (a) a 6-hydroxychroman compound, (b) a phosphorus compound antioxidant selected among biphenylene phosphonite compounds, aryl phosphite compounds, pentaerythritol phosphite compounds, and oxaphosphocin compounds, and (c) a phenolic antioxidant, the amount of ingredient (a) and the sum of ingredients (b) and (c) being 0.5 to 10 wt.% and 99.5 to 90 wt.%, respectively, based on the total amount of ingredients (a), (b), and (c); and an organic polymeric material composition comprising an organic polymer and the stabilizer composition incorporated therein. By using the stabilizer composition as a stabilizing agent for an organic polymeric material, a stabilized organic polymeric material composition can be obtained which has excellent thermal stability during processing and is extremely industrially useful.