摘要:
Sequentially applying two different coatings, in two steps, to metallic surfaces. Metallic surfaces are contacted at temperatures from 10-100° C. with aqueous solution A and then with aqueous solution B, or vice versa, wherein solution A contains an effective amount of zirconium, hafnium, titanium, silicon and/or boron, and of fluoride as ions and/or complex ions able to pickle metallic surfaces and generate a coating on the pickled metallic surface and that solution B contains an effective amount of one or more of XYZ, X*Y*Z* and/or X*Y*Z*Y*X* where Y is an organic group with 2-50 carbons, where X as well as Z is a group—each same or different—of OH—, SH—, NH2—, NHR—, CN—, CH═CH2—, OCN—, CONHOH—, COOR′, acrylamide-, epoxide-, CH2═CR″—COO—, COOH—, HSO3—, HSO4—, (OH)2PO—, (OH)2PO2—, (OH)(OR′)PO—, (OH)(OR′)PO2—, SiH3—, Si(OH)3—, where R′ is an alkyl group with 1-4 carbons, where R″ is hydrogen or an alkyl group with 1-4 carbons, and where X and Z are each bound to the Y in their terminal position, where Y* is an organic group with 1-30 carbons, where X* as well as Z* is a group—each same or different—of OH—, SH—, NH2—, NHR′—, CN—, CH═CH2—, OCN—, CONHOH—, COOR′, acrylamide-, epoxide-, CH2═CR″—COO—, COOH—, HSO3—, HSO4—, (OH)2PO—, (OH)2PO2—, (OH)(OR′)PO—, (OH)(OR′)PO2—, SiH3—, Si(OH)3—,N—CH2—PO(OH)2—, —N—[CH2—PO(OH)2]2— where R′ is an alkyl group with 1-4 carbons, where R″is hydrogen or an alkyl group with 1-4 carbons.
摘要:
A method for coating metal surfaces, in particular surfaces of wheels made of an aluminum alloy, in a multi-step method, wherein the metallic surfaces are first contacted with an aqueous composition predominantly containing silane/silanol/siloxane/polysiloxane and thereafter contacted with an aqueous composition predominantly containing at least one phosphonic compound.
摘要:
A method for coating metal surfaces, in particular surfaces of wheels made of an aluminium alloy, in a multi-step method, wherein the metallic surfaces are first contacted with an aqueous composition predominantly containing silane/silanol/siloxane/polysiloxane and thereafter contacted with an aqueous composition predominantly containing at least one phosphonic compound.
摘要:
A process for the treatment or pretreatment of containers made of aluminum, aluminum-containing alloys, magnesium-containing alloys, iron-containing materials such as steel, coated iron-containing materials such as galvanized steel, or aluminum alloys, tinplate, brass or bronze, in particular the treatment or pretreatment of bags, tubs, bottles, cans, canisters, casks or tubes, wherein the process steps for the treatment or pretreatment take place at the same time as the application of the lubricant, with the agent used for the pretreatment or treatment, which also contains or is a lubricant, not essentially consisting of titanium or zirconium with fluoride and polymer, the lubricant possibly being formed first in the agent for the pretreatment or treatment or in the formation of the coating produced therefrom.
摘要:
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.
摘要:
A brake device of a vehicle, containing an eddy current disk brake having a rotationally fixed stator and a rotating rotor, wherein the rotor or the stator bears an eddy current path and the stator or the rotor bears a magnetic arrangement, the magnetic field lines of which induce eddy currents in the eddy current path for generating a braking torque upon a relative movement of the rotor with respect to the stator, and a friction disk brake having at least one brake disk and brake pads cooperating with the brake disk for generating a braking friction torque between the brake disk and the brake pads, wherein the rotor of the eddy current disk brake is formed by the brake disk of the friction disk brake.
摘要:
A process for producing a repair coating on a metallic surface coated with a corrosion protecting coating A applied with a pretreatment composition, an organic composition or a silicon compound containing composition. Corrosion protecting coating A has been at least partially removed in the area Z, and a thin corrosion protecting coating B containing a silicon compound is applied with a solution or dispersion containing a silane, a silanol, a siloxane, a polysiloxane or a mixture thereof on at least a part of the area Z. A further corrosion protecting coating C which is generated with an organic composition like a primer, a wet-primer, an e-coat, a powder coat, a base-coat or a clear-coat or a composition which is the same or another siloxane composition as for the thin film B may also be applied to coating B.
摘要:
A process for producing a repair coating on a metallic surface coated with a corrosion protecting coating A applied with a pretreatment composition, an organic composition or a silicon compound containing composition. Corrosion protecting coating A has been at least partially removed in the area Z, and a thin corrosion protecting coating B containing a silicon compound is applied with a solution or dispersion containing a silane, a silanol, a siloxane, a polysiloxane or a mixture thereof on at least a part of the area Z. A further corrosion protecting coating C which is generated with an organic composition like a primer, a wet-primer, an e-coat, a powder coat, a base-coat or a clear-coat or a composition which is the same or another siloxane composition as for the thin film B may also be applied to coating B.
摘要:
A compositon 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.
摘要:
The invention relates to a process for coating metallic surfaces with a composition containing silane/silanol/siloxane/polysiloxane, wherein, in addition to a) at least one compound selected from silanes, silanols, siloxanes and polysiloxanes, b) at least one compound containing titanium, hafnium, zirconium, aluminium and/or boron, and c) at least one type of cation selected from cations of metals of subgroups 1 to 3 and 5 to 8, including lanthanides, and of main group 2 of the periodic table of the elements, and/or at least one corresponding compound, the composition contains at least one substance d) selected from: d1) silicon-free compounds having at least one amino, urea and/or ureido group in each case, d2) anions of nitrite and/or compounds having at least one nitro group, d3) compounds based on peroxide, and d4) phosphorus-containing compounds, anions of at least one phosphate and/or anions of at least one phosphonate, as well as e) water, and f) optionally also at least one organic solvent. The invention further relates to corresponding aqueous compositions.