FIELD: stabilizers for divinyl-styrene elastomers. SUBSTANCE: initial substituted phenols include intermediate fraction resulting from isolation of 2,6-di-tert-butylphenol prepared by method of alkylation of phenol with isobutylene on aluminium-containing catalyst and by method of rectification of so-called ortho-fraction containing (wt%): 10-25 phenol; 15-30 2,6-di-tert-butyl phenol (2,6 DTBPh and 2-tert-butyl phenol (2 TBPh), the balance. The claimed process is carried out in the presence of 15-30 wt.-% 2,4-di-tert-butylphenol (2,4-DTBPh) at hexamethylene tetramine to ortho-fraction weight ratio of 1-6.5-7.5. EFFECT: more efficient preparation process. 1 tbl
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