POLYAMIDE-IMIDE RESIN COMPOSITION FOR LUBRICATING COATING MATERIAL

• Main Authors: HATSUTORI TAKAHIRO, SHINO KATSUYA, IENE TAKEHISA, TANIGAWA MASATO
• Format: Patent
• Language: English
• Published: 10.04.2014
• Subjects: ADHESIVES; CHEMICAL PAINT OR INK REMOVERS; CHEMISTRY; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS; COMPOSITIONS BASED THEREON; CORRECTING FLUIDS; DYES; FILLING PASTES; FUELS; INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATINGCOMPOSITIONS; INKS; LUBRICANTS; LUBRICATING COMPOSITIONS; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; ORGANIC MACROMOLECULAR COMPOUNDS; PAINTS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; PEAT; PETROLEUM, GAS OR COKE INDUSTRIES; POLISHES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; THEIR PREPARATION OR CHEMICAL WORKING-UP; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATINGINGREDIENTS IN A LUBRICATING COMPOSITION; USE OF MATERIALS THEREFOR; WOODSTAINS

PROBLEM TO BE SOLVED: To provide a polyamide-imide resin composition for a lubricating coating material, which is superior in the solubility in a solvent containing gamma-butyrolactone that is a non-amide-based solvent while retaining excellent heat resistance (that is to say, high glass transition temperature) and mechanical strength (that is to say, high elastic modulus) of the polyamide-imide resin, and can keep a dissolution state for a long time even in a state that the solvent is liable to absorb moisture.SOLUTION: The polyamide-imide resin composition for a lubricating coating material comprises a polyamide-imide resin containing 50 mol% or more of a repeating unit represented by formula [I] mentioned below, when the total amount of repeating units in the structure of the polyamide-imide resin is 100 mol%, and comprises, as a solvent, gamma-butyrolactone.