Method for preparing 2,2-bis(4-hydroxycyclohexyl)propane
AssigneeChina Petrochemical Development Corporation, Taipei (Taiwan)
InventorsYi-Chi Wang, Hsin-Wei Chang, Weng-Keong Tang, Chia-Hui Shen
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Abstract
The present invention provides a method for preparing 2,2-bis(4-hydroxycyclohexyl)propane, comprising: hydrogenating a reactive solution containing 2,2-bis(4-hydroxyphenyl)propane under a hydrogen atmosphere in a reactor with catalyst within a temperature range of 80-165° C. and a pressure range of 85-110 kg/cm2 to prepare the 2,2-bis(4-hydroxycyclohexyl)propane. The method of present invention has an advantage of high yield properties and achieves mass production easily, thereby enhancing the value of the industrial application.
Claims17
A method for preparing 2,2-bis(4-hydroxycyclohexyl)propane, comprising:
- performing a hydrogenation reaction of a reaction solution of 2,2-bis(4-hydroxyphenyl)propane with hydrogen gas in a reactor containing a catalyst at 80-165° C. under a pressure condition of 85-110 kg/cm2 to obtain 2,2-bis(4-hydroxycyclohexyl)propane,
- wherein the reaction solution contains water of not more than 0.5 wt %,
- wherein the catalyst includes an active metal and a carrier bearing the active metal, and wherein the active metal is at least one selected from the group consisting of Fe, Co, Ni, Ru, Rh, Pd, Os, Ir and Pt,
- wherein the catalyst is in the form of powders or particles, and
- wherein the catalyst has a specific surface area of 150-300 m2/g.
Dependencies are inferred from the claim text.