2. Method for producing 6-di-tert-butylphenol

Abstract

Abstract PURPOSE:The reaction of a phenol with isobutylene is effected in the presence of a catalyst of an aluminum phenolate, the resulting crude product is crystallized to produce the titled compound of high purity without previous separation of the catalyst. CONSTITUTION:In the presence of an aluminum salt of a phenol, preferably phenol or 2-tert.-butyl-phenol, the reaction between phenol and/or 2-tert.-butyl- phenol and isobutylene, preferably at a molar ratio of 1-3, is effected and the crude product is crystallized out to give 2,6-di-tert.-butylphenol. Thus, more than 60% of the product in the crude mixture are recovered in 99% purity. The mother liquor containing the catalyst is decomposed at 150-350 deg.C and the catalyst solution free from phenol and isobutylene as thermal decomposition products is recycled to the reactor.

Inventors

• 👤 Eiji Takahashi
• 👤 英二 高橋
• 👤 Kazuo Ozaki
• 👤 尾崎　和男
• 👤 Tsutomu Idai
• 👤 伊台　務
• 👤 Akio Takahashi
• 👤 高橋　晨生

Bibliographic Details