A composition and a method for coating metallic surfaces with a silane/silanol/siloxane/polysiloxane-containing composition, whereby the composition contains a) at least one compound selected from the silanes, silanols, siloxanes and polysiloxanes, b) at least two compounds selected from titanium-,
A composition and a method for coating metallic surfaces with a silane/silanol/siloxane/polysiloxane-containing composition, whereby the composition contains a) at least one compound selected from the silanes, silanols, siloxanes and polysiloxanes, b) at least two compounds selected from titanium-, hafnium-, zirconium-, aluminum- or boron-containing compounds, optionally c) at least one type of cation selected from cations of metals of the 1st to 3rd and 5th to 8th sub-groups including the lanthanides and the 2nd main group of the periodic table of the elements or at least one corresponding compound, d) at least one organic compound selected from monomers, oligomers, polymers, copolymers and block copolymers or e) at least one substance affecting the pH value, water and optionally at least one organic solvent.
대표청구항▼
1. A process comprising coating a metallic surface with a composition, wherein said composition consists of a) from 0.02 to 1 g/L of at least one compound selected from the group consisting of a silane, a silanol, a siloxane and a polysiloxane, wherein the silane, the silanol, the siloxane or the po
1. A process comprising coating a metallic surface with a composition, wherein said composition consists of a) from 0.02 to 1 g/L of at least one compound selected from the group consisting of a silane, a silanol, a siloxane and a polysiloxane, wherein the silane, the silanol, the siloxane or the polysiloxane contains at least one group selected from the group consisting of an amino group, a urea group and a ureido group;b) at least two complex fluorides of formula MeF6 wherein Me is a metal selected from the group consisting of titanium, hafnium, zirconium, aluminum and boron;water, andc) at least one cation selected from the group consisting of cerium, chromium, iron, calcium cobalt, copper, magnesium, manganese, molybdenum, nickel, niobium, tantalum, yttrium, zinc, and tin;wherein the total amount of the complex fluorides ranges from 0.01 to 100 g/L. 2. The process of claim 1, wherein prior to drying, at least one member selected from the group consisting of a lacquer, a primer and an adhesive is applied to the coating. 3. The process according to claim 1, further comprising the step of applying a lacquer, a lacquer-like coating, a primer or an adhesive to the freshly applied silane-based coating that have not yet dried thoroughly. 4. The process according to claim 1, wherein the rinsing is conducted with demineralized water. 5. The process according to claim 1, wherein the coated surface is dried after rinsing. 6. The process according to claim 5, wherein the coated surface is dried after rinsing at a temperature of 120° C. 7. The process of claim 1, wherein the drying is conducted at a temperature above 70° C. 8. A process comprising coating a plurality of metallic surfaces in a bath of a composition consisting of a) at least one compound selected from the group consisting of a silane, a silanol, a siloxane and a polysiloxane ranging from 0.02 to 1 g/L and wherein the silane, the silanol, the siloxane or the polysiloxane has at least one member selected from the group consisting of an amino group, a urea group GP and a ureido group;b) at least two complex fluorides of formula MeF6 wherein Me is a metal selected from the group consisting of titanium, hafnium, zirconium, aluminum and boron;water,c) at least one cation selected from the group consisting of cerium, chromium, iron, calcium cobalt, copper, magnesium, manganese, molybdenum, nickel, niobium, tantalum, yttrium, zinc, and tin, andd) at least one organic compound selected from monomers, oligomers, polymers, copolymers and block copolymers based on acrylic or urethane in a weight ratio of from 1:0.05 to 1:2 of compounds based on silane, silanol, siloxane or polysiloxane, calculated on the basis of the corresponding silanols, to compounds based on organic polymers, calculated as added solids, in the composition, andandrinsing the coating when freshly applied and prior to thorough drying; wherein said plurality of metallic surfaces comprise at least two different metals and said plurality of surfaces are coated in the same said bath, wherein the composition has a free fluoride content in the range of from 0.01 to 1 g/L, and wherein the total amount of the complex fluorides ranges from 0.01 to 100 g/L. 9. The process according to claim 8, wherein said weight ratio is 1:0.05. 10. The process according to claim 8, wherein said weight ratio is 1:2. 11. A process comprising coating a metallic surface with a composition, wherein said composition consists of at least one silane, siloxane or polysiloxane having at least one member selected from the group consisting of an amino group, a urea group and a ureido group;at least two compounds complex fluorides of formula MeF6 wherein Me is a metal selected from the group consisting of titanium, hafnium, zirconium, aluminum and boron;water, andat least one cation selected from the group consisting of cerium, chromium, iron, calcium cobalt, copper, magnesium, manganese, molybdenum, nickel, niobium, tantalum, yttrium, zinc, and tin,wherein the total amount of the complex fluorides ranges from 0.01 to 100 g/L.
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