	US 11,905,235 B2
	Method for preparing 2,2-bis(4-hydroxycyclohexyl)propane
Yi-Chi Wang, Kaohsiung (TW); Hsin-Wei Chang, Kaohsiung (TW); Weng-Keong Tang, Kaohsiung (TW); and Chia-Hui Shen, Kaohsiung (TW)
Assigned to CHINA PETROCHEMICAL DEVELOPMENT CORPORATION, TAIPEI (TAIWAN), Kaohsiung (TW)
Filed by CHINA PETROCHEMICAL DEVELOPMENT CORPORATION, TAIPEI (TAIWAN), Kaohsiung (TW)
Filed on Jun. 14, 2022, as Appl. No. 17/839,762.
Claims priority of application No. 110142565 (TW), filed on Nov. 16, 2021.
Prior Publication US 2023/0150903 A1, May 18, 2023
Int. Cl. C07C 29/20 (2006.01)

CPC C07C 29/20 (2013.01) [C07C 2601/14 (2017.05)]

17 Claims

1. 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/cm²to 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.