METHOD OF PREPARING ALKYL-TERT-ALKYL ESTERS AND/OR ETHER-CONTAINING MIXTURES Russian patent published in 2001 - IPC

FIELD: petrochemistry. SUBSTANCE: hydrocarbon mixtures containing at least tert-alkenes and C₄ alkadienes in concentration of more than 5% and also other hydrocarbons are reacted with aliphatic alcohols in the presence of acid ion-exchange catalyst followed by distillation of at least unreacted C₄. hydrocarbons. In this case, dissolved hydrogen is removed at least from original steam of alcohol(s) or mixture thereof with alcohol(s). Original hydrocarbon mixture and alcohols/are admitted into reaction zone(s) in total amount from 0.3 to 4.5 l/l of catalyst per hour and temperature at reaction zone(s) inlet is maintained at not higher then 50 C, preferably lower than 40 C and outlet temperature is maintained at not higher than 60 C. EFFECT: no polymeric deposits on catalyst and deactivation thereof for prolonged period of service. 10 cl, 3 tbl