PRODUCTION OF SURFACE-METALLIZED POLYETHYLENE TEREPHTHALATE RESIN MOLDING

摘要

PURPOSE:To provide excellent adhesive strength to a plating film to a thermoplastic polyester resin molding contg. polybutyrene terephthalate and titanium dioxide having specific grain sizes at a specific ratio by subjecting said molding to a surface roughening treatment with an alkali soln. CONSTITUTION:A thermoplastic polyester resin molding is formed by incorporating 10-250pts.wt. titanium oxide having 1-6mu average grain size to 100pts.wt. polybutyrene terephthalate and is subjected to a surface roughening treatment with an alkali soln. The polybutyrene terephthalate is a polymer formed by condensation polymn. of a dicarboxylic acid component of which about >=90mol% is a terephthalic acid component and a diol component consisting essentially of 1,4-butanediol. The alkali treating soln. is preferably an aq. soln. dontg. sodium hydroxide. The molding is treated for about 1-120min at about 30-95 deg.C and is washed. The molding having good adhesion to a metallic plating film and excellent surface brightness is thus obtd.