| 摘要 |
<p>PENTAERYTHRITOL DIPHOSPHITE STABILIZERS AND PROCESS Pentaerythritol diphosphites corresponding to the formula wherein R1 and R2 are independently lower alkyl of 1 to 8 carbon atoms, R3 is -A-COOR4, A is a direct bond, methylene or ethylene; and R4 is methyl or alkyl of 12 to 18 carbon atoms being useful for stabilizing organic materials against thermal, oxidative and actinic degradation and a process for the preparation thereof.</p> |
