3,9-DISPHOSPHASPIROUNDECANES AND PROCESS FOR MAKING 3,9-DIPHOSPHASPIROUNDECANES

摘要

The present invention provides an improved process for making diphosphaspiroundecanes and product-by-process, wherein the process comprises reacting a hydroxyl-substituted organic compound, phosphorous trichloride and pentaerythritol to form an organic-substituted diphosphaspiroundecane such that formation of said organic-substituted diphosphaspiroundecane takes place in the presence of a tri-n-alkylamine having n-alkyl moieties such that each n-alkyl moiety has at least three carbon atoms. The present invention is also directed to bis-3,9-(2,6-di-t -alkyl-4-alkylphenoxy)-2,4,8,10-tetroxa-3,9-diphosphas-prio¢5.5!undecanes and polymer composition containing an effective amount of same.