公开(公告)号：US20200181063A1

公开(公告)日：2020-06-11

申请号：US16627055

申请日：2018-06-27

Applicant: Kemira Oyj

Inventor： Reijo AKSELA ,  Jonas KONN ,  Anna-Maija PERANDER ,  Anna HAARALA ,  Riitta ILMONIEMI ,  Hanna HOFFREN

IPC: C07C227/16 ,  D21C9/10 ,  C07C229/12

Abstract: The present invention relates to a process for in situ the preparation of mixtures of chelating agents by catalyzed reactions of diethanolamine derivatives with maleic acid and then with 2-halocarboxylic acid, to mixtures of chelating agents and methods using such chelating agents.

公开(公告)号：US20200223786A1

公开(公告)日：2020-07-16

申请号：US16627016

申请日：2018-06-27

Applicant: Kemira Oyj

Inventor： Reijo AKSELA ,  Jonas KONN ,  Anna-Maija PERANDER ,  Anna HAARALA ,  Riitta ILMONIEMI ,  Hanna HOFFREN

IPC: C07C227/16 ,  D21C9/10 ,  B01J23/10

Abstract: The present invention relates to a process for the in situ preparation of mixtures of chelating agents by catalyzed reactions of diethanolamine with maleic acid and then with 2-halocarboxylic acid, mixtures obtainable using said process and mixtures of chelating agents. In addition, the invention relates to methods where such mixtures are used.