US 12,466,732 B2
Method for producing halogen oxyacid solution
Takayuki Negishi, Yamaguchi (JP); Takafumi Shimoda, Yamaguchi (JP); Akihiro Saito, Yamaguchi (JP); Naoki Matsuda, Yamaguchi (JP); and Masayuki Moriwaki, Yamaguchi (JP)
Assigned to TOKUYAMA CORPORATION, Yamaguchi (JP)
Appl. No. 17/618,762
Filed by TOKUYAMA CORPORATION, Yamaguchi (JP)
PCT Filed Apr. 16, 2021, PCT No. PCT/JP2021/015751
§ 371(c)(1), (2) Date Dec. 13, 2021,
PCT Pub. No. WO2021/210682, PCT Pub. Date Oct. 21, 2021.
Claims priority of application No. 2020-074063 (JP), filed on Apr. 17, 2020.
Prior Publication US 2022/0356061 A1, Nov. 10, 2022
Int. Cl. C01B 11/04 (2006.01); C07C 209/68 (2006.01)
CPC C01B 11/04 (2013.01) [C07C 209/68 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A method for producing halogen oxyacid, which comprises a step of continuously supplying and mixing an organic alkali solution and a halogen into a reactor, and continuously collecting a reaction solution containing the halogen oxyacid generated,
wherein a residence time of the reaction solution is from 0.1 to 120 minutes,
the reaction solution is continuously collected after a pHI of the reaction solution in the reactor becomes constant,
the pH of the reaction solution in the reactor is from 10.5 to 14.5, and
an amount of the reaction solution in the reactor is kept constant.