PURPOSE: To produce the titled compound in high concentration, by using isobutylene oligomer and phenol as raw materials, controlling the water-content of the raw material mixture within a specific range, and reacting the compounds at a specific humidity in the presence of a catalyst such as synthetic silica alumina, etc.
CONSTITUTION: Isobutylene oligomer, preferably dimer, and phenol are used as the raw materials of the process. The water-content of the raw material mixture is adjusted within the range of formula [W is water-content of the raw material (wt%); t is reaction temperature (°C)], and the compounds are made to react with each other at 230W 300°C in the presence of synthetic silica alumina and/or active clay to obtain the objective compound in high concentration. The raw material mixture is fed to the system at a rate (V/F) of 0.2W6 wherein V is volume of the catalyst and F is volume of the raw material fed to the system per hour.
EFFECT: The system can be operated under low pressure by the use of the isobutylene oligomer compared with the case using a 4C olefin, and the initial and running costs of the apparatus can be saved.
USE: Raw material of oil-soluble phenolic resin, etc.
| JPS58121231 | NOVEL CRESOL DERIVATIVE AND ITS PREPARATION |
| JPH08231452 | PRODUCTION OF MONOALKYLATED CATECHOLS |
KANEKO KEIJI
KOBAYASHI TOMOTSUNE
MIYAJIMA HIROSHI
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