SULFUR BASED CORROSION INHIBITOR

• Main Authors: STANDISH MICHAEL L, WARD ERIC C, FOSTER JR ALVIE L, WEIDNER IVONNE C
• Format: Patent
• Language: English
• Published: 24.11.2005
• Edition: 7
• Subjects: ACYCLIC OR CARBOCYCLIC COMPOUNDS; 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; HETEROCYCLIC COMPOUNDS; 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

PROBLEM TO BE SOLVED: To provide alternative sulfur based corrosion inhibitors overcoming sensitivity to chlorine as the fault of tolyltriaozole widely used as corrosion inhibitors to yellow metal. SOLUTION: The fact that dithiocarbamate compounds are sufficiently strongly effective as sulfur based corrosion inhibitors to be bonded with metals, particularly with copper since they form protective barriers or protective films has been found. Further, the fact that, in the compounds as inhibitors, at the time when the substitutional groups of the aliphatic or aromatic series are changed, remarkably influence is exerted on the performance of being filmed has been found. By optimizing the balance between the hydrophobicity and cubic properties of the shields in the substitutional groups, the improved corrosion inhibitors can be provided. COPYRIGHT: (C)2006,JPO&NCIPI