摘要:
The invention relates to novel organosiloxanyl derivatives of the general formula: to a process for preparing these derivatives, to the use thereof for preparing organomodified siloxanes and to the use thereof as paint additives.
摘要:
The present invention relates to silicone poly(meth)acrylates, to a process for their preparation from alkoxysiloxanes and hydroxy-functional poly(meth)acrylates and to their use as an additive in coatings, especially as an antigraffiti additive.
摘要:
The invention relates to an anti-corrosive coating agent for metal workpieces. For the purpose of good cathodic corrosion prevention, the anti-corrosive coating agent comprises an organic binder having a silicon-organic compound and particulate metal. The workpiece having an anti-corrosive coating is characterized in that the anti-corrosive coating comprises an organic binder having a silicon-organic compound and particulate metal. The method for producing an anti-corrosive coating on a workpiece is characterized by applying, in liquid form, a first coating, comprising an organic binder having a silicon-organic compound and particulate metal as the anti-corrosive coating, and then applying a second coating the composition of which preferably differs from that of the anti-corrosive coating.
摘要:
The invention relates to aqueous dispersions of polysiloxane-polyurethanes based on selected, substantially difunctional starting materials, to their preparation and use for preparing coating compositions, and to a coating composition comprising as substantial binder component polysiloxane-polyurethanes of the kind mentioned. The coating compositions of the invention are especially suitable for use as soft feel coatings.
摘要:
A mixer system, for preparing two-component water-dilutable coating agents, includes a plurality of substantially water-free base colors and a pigment-free aqueous component. One or more of the base colors can be mixed together with a suitable amount of the aqueous component to match a preexisting coating color on a substrate to be repaired. Each of the base colors includes a pigment, an organic solvent and a first binder. The pigment-free aqueous component includes water and a second binder. The second binder is a polymer made from a mixture which includes a monomer component, an initiator, and an aqueous dispersion of a polyurethane resin. Cured coatings which are prepared from compositions using the disclosed mixer system exhibit improved condensation resistance, as compared with previously known coatings.
摘要:
The invention relates to an apparatus (1, 101, 201) for electrochemically coating a workpiece (22), including a coating reservoir (2, 102, 202) with a charge opening (5) and a supply reservoir (3, 103, 203), wherein the two reservoirs are in communication through a passage opening (4, 104, 204). The apparatus has at least one electrode (11) and one counter electrode (14). In order to prevent contamination of a coating liquid (20, 120, 220) during an electrochemical deposition process, the apparatus can be switched between a coating position and a rest position by rotating the supply and the coating reservoirs about at least one common axis (A, A′, A″) so that the center of gravity of the volume of the coating reservoir (2, 102, 202) in the coating position is lower in relation to the center of gravity of the volume of the supply reservoir (3, 103, 203) than in the rest position. The invention further relates to a method for coating workpieces.
摘要:
The invention relates to a method for the electrochemical coating of a workpiece through precipitation of an aluminum-containing metal layer from an ionic liquid, which contains aluminum ions, on the surface of the workpiece. In order to suggest measures, which enable an improvement of the surface properties of a workpiece coated with aluminum, it is provided that the ionic liquid contains particles and these particles are incorporated into the metal layer. The particles have a Mohs hardness of at least 5 and which are selected from silicic acid, aluminum oxide, titanium oxide particles, in particular of the rutile or anatase type, silicon oxide, zirconium oxide, tungsten carbide, chromium carbide, boron carbide, silicon nitride, silicon carbide and diamond particles as well as hollow micro-glass balls or a mixture of these and/or particles that contain lubricants and/or particles that contain graphene and/or fullerenes.
摘要:
The invention relates to a binding agent comprising an aqueous, film-forming, polymeric siloxane. The invention also relates to a coating agent that is produced using said binding agent and to a workpiece that is coated with said coating agent.
摘要:
The invention relates to a process for the preparation of a two-coat finish on a substrate surface, in which process a basecoat is employed which contains as binder a polymer which can be obtained by subjecting an ethylenically unsaturated monomer or a mixture of ethylenically unsaturated monomers to free-radical polymerization in an aqueous dispersion of a polyurethane resin which has a number-average molecular weight of from 1000 to 30,000 and contains on average from 0.05 to 1.1 polymerizable double bonds per molecule, and in the presence of a water-insoluble initiator or of a mixture of water-insoluble initiators, the weight ratio of the polyurethane resin to the ethylenically unsaturated monomer or to the mixture of ethylenically unsaturated monomers being between 1:10 and 10:1.
摘要:
A method for producing a coating powder is provided, including the steps of providing a powdery basic composition, comprising binders, and mixing at least one powdery aggregate with the powdery basic composition to produce a finished coating powder, wherein, during mixing, a powdery state of the aggregate and the basic composition is maintained, and wherein at least one lubricant is used as said powdery aggregate which does not melt as the binder cures.