Improvements in or relating to metal protecting preparations

Surfaces containing Ag, Cu, or Ni are treated and protected with a preparation containing a dialkyl disulphide R-S-S-R, where R preferably has 8 to 22 carbon atoms and is derived from an alcohol or glycol. For cleaning, the preparation may contain an abrasive or a chemical reactive tarnish remover a...

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Bibliographische Detailangaben
Hauptverfasser:	COX BERNARD CARLTON, THORNTON JAMES COWARD, FORD IAN ALASTAIR MONCRIEFF
Format:	Patent
Sprache:	eng
Schlagworte:	ANIMAL AND VEGETABLE OILS, FATS, FATTY SUBSTANCES AND WAXES CANDLES CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DETERGENT COMPOSITIONS DETERGENTS DIFFUSION TREATMENT OF METALLIC MATERIAL FATTY ACIDS THEREFROM 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 RECOVERY OF GLYCEROL RESIN SOAPS SOAP OR SOAP-MAKING USE OF SINGLE SUBSTANCES AS DETERGENTS
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Beschreibung
Zusammenfassung:	Surfaces containing Ag, Cu, or Ni are treated and protected with a preparation containing a dialkyl disulphide R-S-S-R, where R preferably has 8 to 22 carbon atoms and is derived from an alcohol or glycol. For cleaning, the preparation may contain an abrasive or a chemical reactive tarnish remover and may be in liquid, paste powder or semi-solid form and may be impregnated into fibre or fabric. For pickling, brightening, descaling and etching baths the disulphide may be first dissolved in an organic solvent. The disulphide can replace the mercapto carboxylic acid in preparations described in Specification 1,070,383.ALSO:Surfaces containing Ag, Cu, or Ni are treated and protected with a preparation containing a dialkyl disulphide R-S-S-R where R preferably has 8 to 22 carbon atoms and is derived from an alcohol or glycol. For cleaning, the preparation may contain an abrasive or a chemical reactive tarnish remover and may be in liquid, paste, powder or semi-solid form and may be impregnated into fibre or fabric. For pickling, brightening, descaling and etching baths the disulphide may be first dissolved in an organic solvent. The disulphide can replace the mercapto carboxylic acid in preparations described in Specification 1,070,383.