公开(公告)号：US11840522B2

公开(公告)日：2023-12-12

申请号：US17416206

申请日：2019-12-20

Applicant: TOSOH CORPORATION ,  TOSOH FINECHEM CORPORATION

Inventor： Hideki Miyauchi ,  Shota Nishida ,  Daisuke Inoue ,  Yusuke Shigeta ,  Norihisa Kondo ,  Makoto Watanabe ,  Shohei Yumino ,  Tomoya Shimono

IPC: C07D317/42 ,  C07B63/04

CPC classification number: C07D317/42 ,  C07B63/04

Abstract: A method of stabilizing perfluoro(2-methylene-4-methyl-1,3-dioxolane) (hereinafter simply referred to as a “stabilization method”), including incorporating at least one selected from the group consisting of a hydroxy group-containing fluoroaromatic compound represented by General Formula (1) below and a hydroxy group-containing fluoroaromatic compound represented by General Formula (2) below into a composition containing perfluoro(2-methylene-4-methyl-1,3-dioxolane):




(in the formula, R1 to R6 each independently represent one selected from the group consisting of a fluorine atom, a perfluoroalkyl group and a hydroxy group, and at least one of R1 to R6 is a hydroxy group);





(in the formula, R7 to R14 each independently represent one selected from the group consisting of a fluorine atom, a perfluoroalkyl group and a hydroxy group, and at least one of R7 to R14 is a hydroxy group).

公开(公告)号：US11459410B2

公开(公告)日：2022-10-04

申请号：US16637729

申请日：2018-08-06

Applicant: TOSOH FINECHEM CORPORATION

Inventor： Yusuke Shigeta ,  Shinji Ozoe ,  Akihiro Fuji

IPC: C08F12/30 ,  B01J41/14 ,  C07C209/68 ,  C07C211/62 ,  C07C211/63 ,  C07C303/22 ,  C07C309/30

Abstract: The present invention provides a high-purity arylsulfonic acid amine salt vinyl monomer which is an extremely industrially useful arylsulfonic acid monomer with excellent storage stability and amphiphilic solubility in both water and organic solvents, a simple and practical method for producing the same, a polyarylsulfonic acid amine salt which is a polymer thereof, and a method for producing the same. In the arylsulfonic acid amine salt vinyl monomer, a tertiary amine having 2 or 3 different substituents that each have 1 to 7 carbon atoms and also containing at least one or more of tertiary carbon or quaternary carbon or cyclic skeleton in the structure is applied to an amine moiety thereof, and in addition, a polyarylsulfonic acid amine salt having high purity in terms of sulfonation rate and polymerization conversion rate and a polymer thereof are used.