BINDER FOR BRAZING HARDENING ALUMINUM

PROBLEM TO BE SOLVED: To provide a binder for brazing Al or Al alloy by adding a resin of a specified quantity containing oxirane group in which the oxirane group concentration in the dry condition is in a specified range to a methacrylic acid ester copolymer whose acid number in the dry condition i...

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Bibliographische Detailangaben
Hauptverfasser:	HASEGAWA YOSHIHARU, YANAKA ICHIRO, TEJIMA KIYOHIDE, SHIBATA HIKARI
Format:	Patent
Sprache:	eng
Schlagworte:	ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY CLADDING OR PLATING BY SOLDERING OR WELDING COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING DYES FILLING PASTES INKS MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PERFORMING OPERATIONS POLISHES SOLDERING OR UNSOLDERING TRANSPORTING USE OF MATERIALS THEREFOR WELDING WOODSTAINS WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a binder for brazing Al or Al alloy by adding a resin of a specified quantity containing oxirane group in which the oxirane group concentration in the dry condition is in a specified range to a methacrylic acid ester copolymer whose acid number in the dry condition is a specified value. SOLUTION: A resin of 0.1-20 pts.wt. containing oxirane group in which the oxirane group concentration in the dry condition is 0.1-100 m mol/g is added to 100 pts.wt. methacrylic acid ester polymer whose acid number in the dry condition is 1-100. A resin containing 0.1-20 pts.wt. polyoxazoline in which oxazoline group concentration in the dry condition is 0.1-100 m mol/g, or isocyanate group in which NCO % is 1-50 in the dry condition, is added. A resin of 1-20 pts.wt. containing isocyanate group in which NCO % in the dry condition is 1-50 is preferably added to 100 pts.wt. methacrylic acid ester copolymer whose hydroxyl number in the dry condition is 1-100.