Global Patent Index - EP 0976851 A1

EP 0976851 A1 2000-02-02 - Vapour phase corrosion inhibitors, their use and method of producing the same

Title (en)

Vapour phase corrosion inhibitors, their use and method of producing the same

Title (de)

Dampfphasen-Korrosionsinhibitoren, deren Verwendung und Verfahren zu deren Herstellung

Title (fr)

Inhibiteurs de la corrosion en phase vapeur, leur utilisation et méthode de leur fabrication

Publication

EP 0976851 A1 (DE)

Application

EP 99113942 A

Priority

DE 19834226 A

Abstract (en)

A sublimable corrosion inhibitor consists of a combination of (1) aromatic mercaptothiazole or triazole, (2) water-insoluble, poly-substituted phenol and (3) L-ascorbic acid or one of its salts. An Independent claim is also included for a process for the production of corrosion inhibiting combinations by mixing the above components together.

Abstract (de)

Die Erfindung betrifft Stoffkombinationen mit (1) einem aromatischen Mercaptothiazol oder Triazol, (2) einem wasserunlöslichen, mehrfach substituierten Phenol, (3) L-Ascorbinsäure oder einem ihrer Salze, sowie ggf. (4) einem geeigneten Carbonsäure/Salz-Paar, das nach dessen Sublimation und Kondensation auf Metalloberflächen dort den pH-Wert eines kondensierten Wasserfilmes im Bereich 4,8 <= pH <= 6,5 (bezogen auf 25°C) stabilisieren kann, und die Verwendung der Stoffkombinationen als Dampfphasen-Korrosionsinhibitoren in Verpackungen oder bei der Lagerung in geschlossenen Räumen zum Schutz von vorzugsweise nichtpassivierbaren Metallen, wie Kupfer, Silber, Mangan, Magnesium und deren Legierungen gegen atmosphärische Korrosion.

IPC 1-7 (main, further and additional classification)

C23F 11/02

IPC 8 full level (invention and additional information)

C09K 15/08 (2006.01); C09K 15/30 (2006.01); C23F 11/02 (2006.01)

CPC (invention and additional information)

C23F 11/02 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0976851 A1 20000202; EP 0976851 B1 20020102; AT 211511 T 20020115; BR 9903022 A 20000328; DE 19834226 C1 20000210; JP 2000087268 A 20000328; US 6540959 B1 20030401

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