摘要:
The present invention provides an inexpensive, non-chromium anticorrosive coating composition and anticorrosion treatment method, which are superior in anticorrosion to conventional chromium-containing anticorrosive compositions. The anticorrosive coating composition of the invention comprises 0.2 to 50 g thiocarbonyl group-containing compound and 0.1 to 5 g phosphate ions in one liter of a composition based on the total amount of the aqueous resin and water or further comprises 10 to 500g of water-dispersible silica. The anticorrosion treatment method of the invention comprises coating zinc type coated steel or non-coated steel with the anticorrosive coating composition.
摘要:
It is an object of the invention to provide a chemical conversion treating agent which contains no chromium and can give good effect of chemical conversion treatment equal to or better than that of zinc phosphate treatment to all metals such as iron, zinc, aluminum and the like. The present invention provides a chemical conversion treating agent comprising zirconium, fluorine and a water-soluble epoxy compound, wherein the content of the zirconium in the chemical conversion treating agent is 20 to 10000 ppm on the metal equivalent basis, the water-soluble epoxy compound has a fundamental skeleton of bisphenol F, has an amino group and an isocyanate group, has a number-average molecular weight of 400 to 1000, and the content of the water-soluble epoxy compound in the chemical conversion treating agent is 100 to 2000 ppm in terms of the concentration of solid matters.
摘要:
It is an object of the present invention to provide a chemical conversion coating agent which places a less burden on the environment and can apply good chemical conversion treatment to all metals such as iron, zinc and aluminum, and a surface-treated metal obtained using the same. A chemical conversion coating agent comprising:
at least one kind selected from the group consisting of zirconium, titanium and hafnium; fluorine; and a water-soluble resin , wherein said water-soluble resin has, in at least a part thereof, a constituent unit expressed by the chemical formula (1) : and/or the chemical formula (2):
摘要:
The present invention has for its object to provide a nonchromate metallic surface-treating agent which is suited for metallic substrates, and despite the absence of chromium therein, is capable of imparting high processability and corrosion resistance in preparation for a coating or other procedure. This invention provides a nonchromate metallic surface-treating agent which comprises, in each liter thereof,
(a) 0.01 to 100 g/l of a silane coupling agent and/or a hydrolytic condensation product thereof, (b) 0.05 to 100 g/l of water-dispersible silica (as solids), and (c) 0.01 to 50 g/l, in terms of Zr ion, of a zirconium compound and/or 0.01 to 50 g/l, in terms of Ti ion, of a titanium compound and/or (d) 0.01 to 100 g/l of a thiocarbonyl-containing compound and/or (e) 0.1 to 100 g/l of a water-soluble acrylic resin.
摘要:
A method of treating a metallic surface which comprises treating a metal-coated steel panel with a nonchromate metallic surface treating agent containing, in each liter thereof, (a-1) a silane coupling agent and/or a hydrolytic condensation product thereof, (a-2) water-dispersible silica, and (a-3) a zirconium compound and/or a titanium compound, drying the treated steel panel and coating it with an anticorrosion coating agent containing, in each liter of an aqueous resin solution or dispersion, (b-1) a silane coupling agent and/or a hydrolytic condensation product thereof, (b-2) water-dispersible silica and (b-3) at least one phosphorus-containing ion selected from among phosphate ion, phosphite ion and hypophosphite ion.
摘要:
The present invention provides an anti-corrosive coating composition suitable for metal, particularly zinc-coated steel plates, which is free of chromium, is capable of conferring excellent corrosion resistance on the metal coated therewith, and is excellent in storage stability, in which silane coupling agent and/or hydrolyzate condensates thereof is contained in water or an aqueous resin solution or suspension; in addition the composition may additionally contain phosphorus containing ions and/or sulfur-containing compound or sulfur-containing ions; a method for anti-corrosive coating of metal materials and metal materials coated with the composition.
摘要:
The present invention is relates to pretreatment chemicals metal materials to be painted comprising at least one kind of sulfur-containing compounds and at least one of phosphorus ion-containing compounds, and an anticorrosive treatment of metal materials, by the pretreatment chemicals.