An oligomeric stabilizer mixture, a process for production thereof and an organic material comprising the same

摘要

A stabilizer mixture obtained by the partial condensation of phosphorus trichloride (PCl3) with 2,2'-dimethyl-4,4'-dihydroxy-5,5'-di-tert.-butyl-diphenyl sulfide (DHDAS) shows a phosphorus content of 2-4 wt% and a DHDAS content of 0.5-50 wt%. Independent claims are also included for: (a) a process for the production of this stabilizer mixture by partial condensation of PCl3 with DHDAS in a mol ratio of (1:2.1)-(1:4.3); (b) organic material containing 0.01-5 (preferably 0.05-2) wt% stabilizer mixture.