Abstract:
A repair enamelling process with several layers of enamel is disclosed. A metallic base enamel is sprayed and dried on the prepared old enamel, a clear lacquer is applied on the base layer and the clear lacquer is then dried together with the base lacquer. The process is characterised in that the aqueous base coating composition is applied in such a way that (a) in a first spraying step the aqueous base coating composition is applied on the prepared surface of the old enamel until a certain limit is reached; (b) the surface of the old enamel coated during step (a) is then coated during a second spraying step with the aqueous base coating composition; (c) steps (a) and (b) of the process are repeated in the area of the old enamel adjacent to the previously coated area of the old enamel, again until a certain limit is reached; and (d) step (c) is repeated until the whole area to be coated is provided with a base layer.
Abstract:
The invention concerns a method of producing a multi-coat repair paint coating, the method calling for the damaged area and the areas of the existing paint coating surrounding it to be prepared and then sprayed with a metallic primer so that the primer covers the whole of the damaged area and runs out over the existing paint coating. Finally, a clear vanish is applied over the primer and optionally also over the surrounding areas of existing coating. The method is characterized in that: 1) when the primer is being applied to the areas of existing paint surrounding the damaged area, the spray gun is angled towards the damaged area and, 2) when applying the primer, the spray gun is operated at normal or slightly reduced pressure.
Abstract:
A system (65) for depositing a film on a substrate in a CVD process has a second-source injection sub-system (83) for injecting a control gas. The deposition rate of the material deposited in the CVD process is a function of the concentration of the control gas at the point that material is deposited. The second source injection sub-system (83) provides a concentration gradient of the control gas relative to the substrate surface coated, and alters the thickness uniformity of the film. By controlling the gradient one may control the thickness uniformity profile. In another embodiment, the invention applies to dry etching with reactive gas, and the etching rate is controlled by second source provision of a control gas.
Abstract:
By a process for the cleaning and protection, including corrosion protection, preservation and disinfection, of all surfaces subjected to daily, periodic or current cleaning, and which between treatment and cleaning may be exposed to water having pH /= 9, whereby also the dirt settled on the film is removed. Thereafter the surfaces may be applied with a new film. Hereby it is possible without use of aggressive chemicals, hot water and pressure equipment, and without risk of build-up of resistant bacteria, in a very short time to perform cleaning and protection of rooms and equipment. Savings on water, energy, cleaning agents and personnel are obtained, and both internal and external environment are spared.
Abstract:
A method of obtaining a relief image on a carrier consists in printing a flat pattern of the image on the carrier at least once and by means of at least one composition which includes a liquid dispersion destabilizer, and subsequent treating the carrier with the flat pattern by means of a liquid dispersion. The relief image is formed by deposition of the dispersed phase from the dispersion.
Abstract:
A novel coating for waterproofing and sealing a sewage system structural unit using a styrene polymeric film cast from an organic solvent is disclosed. The coating is easily maintained as damaged areas and imperfections can be repaired by simply applying additional liquid composition to the damaged area, and the liquid composition remelts the existing film allowing the newly formed film to be continuous. In addition, the composition can be applied to structural units in sub-freezing temperatures or to wet surfaces. Novel methods relating to the use of the liquid, chemically resistant coating composition are also disclosed including application to concrete and masonry units used in sewage systems.
Abstract:
A novel, layered, indicia-containing, surface-coating composite for application to a substrate F such as a floor is disclosed. The novel composite comprises a layer of pressure-sensitive adhesive (16) and a layer of indicia (14, 15) having the layer of pressure-sensitive adhesive (16) on one side thereof. The pressure-sensitive adhesive layer (16) secures the indicia layer (14, 15) to the floor F. "Tack" properties of the pressure-sensitive adhesive (16) may range from 50 to 2000 grams per square centimeter. The novel composite further includes an alkali-soluble transparent polymeric layer (18) on the opposite side of the indicia layer (14, 15). Also disclosed is a method of applying, and then selectively removing, such an indicia-containing surface-coating composite from the floor F.
Abstract:
A process for protecting a surface from non-desired contamination and for facilitating removal of said contamination from said surface, characterized by the steps: a) preparing a solution of polysaccharides containing at least two components, wherein one component is constituted by a first polysaccharide which, when precipitated from a solution by evaporation of the solvent thereof, directly forms a film, and wherein the second component is constituted by a second polysaccharide which, when precipitated from a solution by evaporation of the solvent thereof, forms a film via at least partial gel formation, or by interaction with said first polysaccharide, said films being redissolvable or swellable; b) applying the solution from step a) onto said surface before subjected to contamination; c) allowing the applied solution to dry so as to form a solid film on said surface via at least partial gel formation; d) treating the film-coated surface with a liquid capable of redissolving film or provided swelling thereof; and e) removing the non-desired contamination by complete or partial removal of the film from the surface.
Abstract:
Polyurethane-backed substrates such as attached cushion carpeting are prepared from a polyurethane forming composition based on a soft segment prepolymer of MDI or an MDI derivative. The use of the prepolymer provides a backing having good strength properties and good resiliency.
Abstract:
A method of forming a temporary barrier between a substrate and the atmosphere to protect the atmosphere from deleterious materials (e.g. noxious fumes from spills) or to protect a substrate from adverse atmospheric conditions (e.g., protecting plants from unseasonable frost). The method comprises applying to the substrate a layer of foam generated from an aqueous composition comprising, in an approximately 1:1 molar ratio, at least one anionic surface active sulfate and a carboxylic acid salt. Compositions adapted for this purpose are also provided.