[EN] PROCESS FOR THE C-ALKYLATION OF AROMATIC HYDROXYL COMPOUNDS<br/>[FR] PROCEDE DE C-ALKYLATION DE COMPOSES HYDROXYLE AROMATIQUES
申请人:EASTMAN CHEM CO
公开号:WO2002055461A1
公开(公告)日:2002-07-18
Disclosed is a process for the preparation of dialkyl aromatic hydroxyl compounds such as dialkylphenols, dialkylbenzenediols, diakylnaphthols and dialkylnaphthalenediols, especially 2,5-dialkyl-hydroquinone, by contacting an aromatic hydroxy compound with an olefin in the presence of a sulfonic acid and sulfuric acid wherein the sulfonic acid:sulfuric acid molar ratio is in the range of0.3:1 to 3:1.