abstract |
The present invention relates to synergistic mixtures for stabilizing polymeric organics from light, heat and oxidation, wherein the synergistic mixtures comprise sterically hindered cyclic amines and 3-pyrazolidinones or 1,2,4-triazolidine- It contains specific derivatives of 3,5-dione. The present invention also relates to several novel derivatives of 3-pyrazolidinone or 1,2,4-triazolidine-3,5-dione. |