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EP0262086A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Corrosion inhibitor

Assignee: Novartis AG
•
Filing: 1987-08-27
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Granted: —
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Expires: 2007-08-27
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Abstract

Abstract Translated from German Korrosionsschutzmittel enthaltend a) ein Imidazolin der Formel I, worin R¹ Wasserstoff, C₁-C₆-Hydroxyalkyl, C₁-C₆-Aminoalkyl, C₂-C₁₉-­Carboxyalkyl oder dessen Ammonium- oder Aminsalze und R² Wasser­stoff, C₁-C₁₇-Alkyl oder C₂-C₁₇-Alkenyl bedeuten, b) eine heterocyclische Polysäure der Formel II, worin R³ C₂-C₆-Carboxyalkyl oder dessen Alkali-, Erdalkali-, Ammonium- oder Aminsalze bedeutet, c) mindestens ein Alkanolamin der Formel III, worin R⁴ C₁-C₆-Hydroxyalkyl bedeutet und R⁵ und R⁶ gleich oder verschieden sind und Wasserstoff, C₁-C₆-Alkyl oder C₁-C₆-­Hydroxyalkyl bedeuten, und d) Wasser eignen sich hervorragend zur korrosionsinhibierenden Behandlung von Eisen- und Stahlformstücken. Containing anti-corrosion agents a) an imidazoline of the formula I, wherein R¹ is hydrogen, C₁-C₆-hydroxyalkyl, C₁-C₆-aminoalkyl, C₂-C₁₉-carboxyalkyl or its ammonium or amine salts and R² is hydrogen, C₁-C₁₇-alkyl or C₂-C₁₇-alkenyl, b) a heterocyclic polyacid of the formula II, wherein R³ is C₂-C₆-carboxyalkyl or its alkali, alkaline earth, ammonium or amine salts, c) at least one alkanolamine of the formula III, wherein R⁴ is C₁-C₆-hydroxyalkyl and R⁵ and R⁶ are identical or different and are hydrogen, C₁-C₆-alkyl or C₁-C₆-hydroxyalkyl, and d) water are ideal for the corrosion-inhibiting treatment of iron and steel fittings.

Inventors

  • 👤 Ulrich Dr. Häring

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-09 22:38
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/141; C23F11/142; C23F11/149

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