Japan Intellectual Property Rights: METHOD FOR PRODUCING 2,2'-BIS(2-HYDROXYETHOXY)-1,1'-BINAPHTHALENE

Japan, March 5 -- TAOKA CHEM CO LTD has got intellectual property rights for 'METHOD FOR PRODUCING 2,2'-BIS(2-HYDROXYETHOXY)-1,1'-BINAPHTHALENE.' Other related details are as follows:

Application Number: JP,2022-051750

Category (FI): C07C43/23@A,C07C41/58

Stage: PROBLEM TO BE SOLVED: To provide a method for producing 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene that is more suitable for industrial-scale execution.SOLUTION: It was found that the problem can be solved by precipitating crystals of 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene from a solution of 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene and a solvent comprising an aromatic hydrocarbon and methanol at a specific ratio and, thereby, 2,2'-bis(2-hydroxyethoxy)-1,1'-binaphthalene can be produced efficiently on an industrial scale.SELECTED DRAWING: None (Grant)

Filing Date: March 28, 2022

Publication Date: Oct. 21, 2022

The original document can be viewed at: https://www.j-platpat.inpit.go.jp/p0100

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