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EP0070046A1 Expired / Lapsed EP ⏱️ 0.0 years remaining

Process for the preparation of a zinc salt of 2-mercapto-pyridine-N-oxide in an easily filtratable but well suspendable form

Assignee: Weyl ruetgers AG GmbH
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Filing: 1982-04-16
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Granted: —
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Expires: 2002-04-16
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Abstract

Abstract Translated from German Zink-2-merkaptopyridin-N-oxid läßt sich leicht filtrieren und auswaschen und mit diesem Stoff hergestellte wäßrige Suspensionen bleiben lange stabil, wenn die Fällung des Zink-2-merkaptopyridin-N-oxids aus wäßrigen Lösungen des entsprechenden Natriumsalzes durch Zugabe von wasserlöslichen Zinksalzen im Temperaturbereich von 35 - 100°C in Gegenwart wasserlöslicher oder teilweise wasserlöslicher organischer Lösungsmittel erfolgt. Zinc-2-mercaptopyridine-N-oxide can be easily filtered and washed out, and aqueous suspensions prepared with this substance remain stable for a long time if the precipitation of zinc-2-mercaptopyridine-N-oxide from aqueous solutions of the corresponding sodium salt by adding water-soluble zinc salts in the temperature range of 35-100 ° C in the presence of water-soluble or partially water-soluble organic solvents.

Inventors

  • 👤 Manfred Dr. Maurer
  • 👤 Winfried Dr. Orth
  • 👤 Werner Dr. Fickert

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-05 02:52
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/89

Claims Analysis

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References Cited (Backward Citations)

US2809971A Cited
US3159640A Cited
US3700676A Cited
EP0034385A2 Cited

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