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US 11,834,395 B2Granted
Method for preparing hydrogenated bisphenol A
AssigneeKorea Kumho Petrochemical Co., Ltd.
InventorsKee Yoon Roh, Jung Hee Jang, Je Young Park, Nam Hyun Cho
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Abstract
An embodiment of the present invention provides a method for preparing hydrogenated bisphenol A, comprising: (a) heating a reactor in which bisphenol A, a solvent, and a ruthenium supported catalyst are added; (b) supplying hydrogen into the reactor to react; and (c) blocking the supply of hydrogen to react.
Claims6
A method for preparing hydrogenated bisphenol A, comprising:
- (a) heating a reactor in which bisphenol A, a solvent, and a ruthenium supported catalyst are added;
- (b) supplying hydrogen into the reactor to react;
- and
- (c) blocking the supply of hydrogen to react,
- wherein the reaction temperature in each of steps (b) and (c) is 140 to 160° C.,
- the reaction time in step (c) is 60 to 90 minutes, and
- a ratio of trans/trans isomer of hydrogenated bisphenol A in a product of step (c) is 51.58% or more.
4 more elements
Dependencies are inferred from the claim text.