METHOD OF PRODUCING 2,6-DIISOBORNYL-4-METHYLPHENOL Russian patent published in 2013 - IPC C07C39/17 C07C37/14 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing 2,6-diisobornyl-4-methylphenol, which is of interest as an antioxidant and stabiliser of polymer materials. The method involves alkylation of p-cresol with camphene as a terpene while heating in the presence of a catalyst selected from a group of aluminium-containing compounds. The reaction mixture is diluted with an organic solvent selected from saturated hydrocarbons (octane, heptane, hexane), petroleum ether, aromatic hydrocarbons, chloroform, dichloromethane, methyl-tert-butyl ether, diethyl ether; aluminium oxide (neutral) and activated carbon are added in ratio of 1-100-0.1-1 in amount of 1-20 wt % to the reaction mixture; after mixing and settling, the sorbents are filtered, washed with an organic solvent and the solvent is evaporated at low pressure.

EFFECT: invention increases technological effectiveness of the process by avoiding formation of large amount of flush water.

9 ex