Composition, and threaded connection for pipes including lubricant coating layer formed from the composition

• Main Authors: GOTO, Kunio, ABE, Tomoka
• Format: Patent
• Language: English
• Published: 11.08.2022
• Subjects: BLASTING; CHEMICAL SURFACE TREATMENT; CHEMISTRY; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; COATING MATERIAL WITH METALLIC MATERIAL; COATING METALLIC MATERIAL; DIFFUSION TREATMENT OF METALLIC MATERIAL; ENGINEERING ELEMENTS AND UNITS; FUELS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL; JOINTS OR FITTINGS FOR PIPES; LIGHTING; LUBRICANTS; LUBRICATING COMPOSITIONS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METALLURGY; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THERMAL INSULATION IN GENERAL; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION; WEAPONS

Provided are a composition for the purpose of obtaining a threaded pipe joint having excellent anti-galling properties and excellent high torque properties, and a threaded pipe joint provided with a lubricant coating layer formed from the composition, and having excellent anti-galling properties and excellent high torque properties. This composition is for the purpose of forming a lubricant coating layer (21) on a threaded pipe joint, and contains polyisobutylene, metallic soap, wax, and a basic aromatic organic acid metal salt. This threaded pipe joint comprises: a pin (3) having a pin-side contact surface (34) containing a pin-side threaded section; a box (4) having a box-side contact surface (44) containing a box-side threaded section; and a lubricant coating layer (21) comprising the composition and serving as the outermost surface layer on the pin-side contact surface (34) and/or the box-side contact surface (44).