PROCESS FOR PREPARING PHOSPHOTARTARIC ACID AND SALTS THEREOF

• Main Authors: HATER, Wolfgang, WOLF, Florian, LUNKENHEIMER, Rudolf
• Format: Patent
• Language: English; French; German
• Published: 23.01.2019
• Subjects: ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAININGELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN,SULFUR, SELENIUM OR TELLURIUM; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; METALLURGY; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLICMATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASSC23 AND AT LEAST ONEPROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25; NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; ORGANIC CHEMISTRY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

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.