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Use of quaternized imidazoles as non-ferrous metal corrosion inhibitors and antifreeze concentrates and coolant compositions containing the corrosion inhibitors
Use of quaternized imidazoles as non-ferrous metal corrosion inhibitors and antifreeze concentrates and coolant compositions containing the corrosion inhibitors
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机译:季铵化咪唑作为有色金属腐蚀抑制剂和含有该腐蚀抑制剂的防冻剂和冷却剂组合物的用途
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PCT No. PCT/EP97/00648 Sec. 371 Date Aug. 11, 1998 Sec. 102(e) Date Aug. 11, 1998 PCT Filed Feb. 13, 1997 PCT Pub. No. WO97/30133 PCT Pub. Date Aug. 21, 1997Quaternized imidazoles I in which R1 and R3 independently of one another are saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nonadjacent oxygens, R2, R4 and R5 independently of one another are hydrogen or saturated or unsaturated hydrocarbon radicals of 1-12 carbon atoms which can be substituted by oxygen-functional groups or interrupted by nonadjacent oxygens, it being possible for R4 and R5, together with the corresponding imidazole carbons, to form a five- or six-membered ring, and X(-) is an anion, are used as corrosion inhibitors in the corrosion protection of nonferrous metals, especially for car radiator protection.
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