An apparatus (2) for the impregnation of metal castings including an impregnation chamber (11) having an open end; a movable assembly (2) comprising a cover (20) for closing the open end of the impregnation chamber, a casting carrier (21), carrier transport means (22) for raising and lowering the casting carrier relative to the cover, and carrier rotating means (23); and transport means (24) for raising and lowering the movable assembly relative to the open end of the impregnation chamber. The i...

The invention concerns the use of monomer-free saturated or unsaturated polyester resins or mixtures of saturated and unsaturated polyester resins containing structural units of general formulae (I) and/or (II), in which n=1-10, as impregnation, sealing and coating compounds for electrical engineering and electronic components and for carrier substances for flat insulating materials. ##STR1##

A method for impregnating copper into aluminum interconnect lines on a semiconductor device is disclosed. In a first embodiment, an interconnect pattern is formed on an aluminum layer by etching while the aluminum is substantially free from copper, and the copper is thereafter introduced to the formed interconnect lines. In a second embodiment, copper is introduced to the aluminum layer prior to formation of the desired interconnect pattern. The copper-rich layer is removed from the areas to be ...

A method and apparatus for use in impregnating an absorbent fibrous layer or similar portion of a tubular liner with a curable resin material to prepare such a liner for installation into a pipe to repair the pipe. Several vacuum applicators such as hollow needles, all connected to a vacuum, are used simultaneously to evacuate air from the entire absorbent fibrous layer of the tubular liner, beginning at a time significantly before curable resin is first introduced to be absorbed. A timer is use...

An impregnation resin composition comprising an alicyclic epoxy compound, an acid anhydride, an aluminum compound having an organic group, and butylglycidyl ether, wherein the alicyclic epoxy compound contains not more than 30 ppm in concentration of Na ion component.

A process for improving the physical properties and chemical resistance of concrete, brick and like materials by impregnation with an epoxy resin and comprising the steps of A. drying the material to a moisture level below about 5% by weight, B. impregnating the dried material under conditions of vacuum and/or pressure with an epoxy resin composition comprising a mixture of an epoxy resin, from about 10 to about 50 parts per one hundred parts of resin of a reactive diluent for epoxy resins, and ...

A pre-packaged cleaning system or kit is used for transport, storage and solvent impregnation of one or more fabric rolls used for cleaning components of printing machines. A container holds one or more fabric rolls, and one or more bags containing a solvent. When the rolls are to be used, the bags are perforated, allowing the solvent to flow onto the rolls. Thus, the rolls can be impregnated with solvent immediately before use. Because they are stored separately, the rolls and solvent are not l...

An apparatus for dissolving oxygen in a body of water having a housing submerged in a body of water. A chamber in the housing containing a volume of oxygen in surface contact with the water. An apparatus for supplying oxygen to the chamber at a rate equal to the rate at which oxygen is absorbed by the water.

Apparatus is provided for carrying out a varnish impregnation method wherein a sheet-like base material is sequentially passed through a low-viscosity liquid storage region storing a low-viscosity liquid such as a solvent, a thermal syphon region, and a varnish storage region storing a varnish, the thermal syphon region being positioned between the low-viscosity liquid storage region and varnish storage region and communicating with both regions at air tight seals closed by liquid surfaces, and ...

The present invention provides a manganese nitrate coating having high conductivity and solid tantalum anode capacitors having low ESR by using an oven atmosphere which effectively treats all of the anodes in the oven. The manganese nitrate coating of the present invention is produced under highly oxidizing conditions by providing one or more oxidizing agents more active than nitrogen dioxide in the atmosphere of the oven during pyrolysis of manganese nitrate. The oxidizing agents include nitric...