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1. (WO2017154556) PROCESS FOR PREPARING PHOSPHOTARTARIC ACID AND SALTS THEREOF

Pub. No.:    WO/2017/154556    International Application No.:    PCT/JP2017/006329
Publication Date: Fri Sep 15 01:59:59 CEST 2017 International Filing Date: Wed Feb 22 00:59:59 CET 2017
IPC: C07F 9/09
C02F 5/00
C02F 5/04
Applicants: KURITA WATER INDUSTRIES LTD.
Inventors: Rudolf Lunkenheimer
Wolfgang Hater
Florian Wolf
Title: PROCESS FOR PREPARING PHOSPHOTARTARIC ACID AND SALTS THEREOF
Abstract:
The present invention relates to a process for preparing phosphotartaric acid and salts thereof, wherein a reaction mixture containing epoxysuccinic acid or a salt thereof, an orthophosphoric acid source and water as main constituents is reacted, to compositions obtainable by this process and to the use of such compositions for treating water in water-bearing systems, in particular as an additive for inhibition of formation of scale or inhibition of corrosion in water bearing systems.