Abstract: Painting of an article formed of a synthetic resin, e.g. an automobile bumper formed of polyurethane resin, is accomplished by simplified operations and at reduced cost by using a paint of a desired color containing 5-40 wt % of an aprotic polar solvent, preferbly N-methyl-2-pyrrolidone. The paint is applied directly to a cleaned surface of the plastic article, followed by usual drying and baking. Application of a usual primer is omitted since the paint containing an adequate amount of aprotic polar solvent is excellent in adhesion to plastic surfaces. The obtained paint film is comparable to an ordinary top coat paint film formed on a primer layer in appearance, whether resistance and chemical resistance. When a two-toned paint coat is wished, another paint not containing any aprotic polar solvent is applied onto a selected area of the initially formed paint film, followed by drying and baking.

Abstract: A method of, and apparatus for, repairing mechanical and/or chemical damage to the surface of glass bottles destined for re-use. A bottle to be repaired is brought to a temperature in the region of the transformation point of the glass of the bottle, its surface is thermally treated with laser beams, and during the treatment the bottle surface is linearly scanned with the laser beams while rotating the bottle about its longitudinal axis to repair the surface. The apparatus comprises a laser source and optical means for directing the laser beam generated by the laser source onto the surface of a bottle being treated.

Abstract: An improved process for applying a multilayer finish on a primer coated substrate by using a guide coating composition that is applied over the primer of the substrate and then a water borne base coating composition containing metallic pigments and a clear coating composition are applied; before the base coating composition is applied, the guide coating composition is dried at ambient temperatures or at elevated temperatures but not fully cured or crosslinked; the guide coating contains a polymeric latex in an aqueous carrier, preferably an acrylic latex, and optionally, a crosslinking agent and metallic flake pigments; the process improves the appearance, particularly head-on-brightness of water borne basecoat/clear coat finishes in which the base coat contains metallic flake pigments.

Abstract: Disclosed herein is a reinforced flexible graphite sheet uniformly containing a thermosetting resin prepared by impregnating a flexible graphite sheet with a liquid thermosetting resin having the carbonizing yield of more than 20% under a reduced pressure and thereafter, heat-setting the resin, an amount of the resin impregnated being in the range of 0.5 to 20% by weight based on the flexible graphite sheet.

Abstract: Wood golf club heads are first subjected to a vacuum and then immersed in a solution of resin while under a source of vacuum condition. The heads are then subjected to an elevated pressure. The pressure is then removed and the heads dried. Apparatus for effectively carrying out the process utilizes a treatment chamber arranged to receive one or more of the heads. This chamber is associated with vacuum and elevated pressure supply apparatus to selectively subject the chamber to vacuum or pressure. A resin chamber is supported on top of the treatment chamber and has a valved conduit for controlling the supply of resin introduced to the treatment chamber.

Abstract: Finely divided mineral ore is pelletized using a soluble synthetic polymer. Preferably the polymer is in the form of beads made by reverse phase polymerization and all having a size of below 300 .mu.m. When the ore gives a pH in water of below 8 the soluble polymer is preferably cationic.

Abstract: An apparatus and method for treating one side of a moving web includes a pair of laterally spaced vertical end members. The web to be treated passes in a downwardly extending loop around the lower arcuate edges of the end members and is sealed thereto by tension in the web. The web and end members form a trough containing a flowable treatment material, and the web moves past the flowable material to be contacted and treated thereby. Guide means direct the web downwardly to the inlet side of the trough and upwardly from the exit side of the web-formed trough.

Abstract: A process for improving the hygroscopic, soil release and other properties of a polymer substrate is provided in which the substrate is contacted with a suitable aqueous mixture containing a water-soluble cross-linking vinyl monomer and an organic hydrophobic carrier compound at a temperature of between about 40.degree. C. to 100.degree. C. Polymerization of the monomer is thereafter initiated by a chemical or physical initiator to form a vinyl polymer evenly disposed on the substrate. The hygroscopic, soil release and other surface properties of the substrate are thereby improved. The mixture may be in the form of an emulsion wherein the hydrophobic carrier compound is emulsified by an appropriate agent. The invention also pertains to the improved substrates prepared in accordance with the present process.

Abstract: A medical material comprising a shaped article made of a soft vinyl chloride resin composition, a layer formed on the shaped article and composed essentially of crosslinked gelatin having good bio-compatibility with a living body, and an intermediate bonding layer firmly bonding the crosslinked gelatin layer to the shaped article.

Abstract: A process for protecting an article from wear, wherein a frictionally transformable material is provided at the surface of the article, and then the surface of the article is subjected to frictional wear. The wear transforms the outermost layer of the material to the amorphous state, which is more wear resistant and corrosion resistant than is the material in its nonamorphous state. As the material is worn away gradually, the frictional transformation continues, thereby replenishing the amorphous outermost layer, so that a protective outermost layer remains.

Abstract: A method of and apparatus for co-extruding upon a first continuous coating adhered to a substrate band (such as a pressure-sensitive adhesive), periodic top coat sections of coating material of different characteristics (such as non-stick properties), as for such purposes as providing laminating adhesive strips in desired regions only, as for use in diaper laminates and the like.

Abstract: Phosphors are coated and deaggregated by treatment with ultrasonic energy during the coating step. The phosphor aqueous dispersion is continuously passed through an ultrasonic chamber at a rate of flow so as to prevent aggregated phosphor particles from settling out and avoiding deaggregation.

Abstract: A treatment for finely divided silica reinforcing fillers is provided which utilizes low temperature and hydroxy or alkoxy containing diorganopolysiloxane as the treating agent. The treatment of fillers in this manner facilitates the manufacture and incorporation into silicone rubbers.

Abstract: Disclosed is a method and apparatus for continuously forming and depositing a layer of monomolecular amphiphilic molecules on a substrate. The present invention includes an apparatus and method for transferring and compressing an uncompressed molecular layer from one liquid surface region to another adjacent liquid surface region by using non-moving or static mechanical components which do not come into direct contact with the monomolecular layer. The present invention is based on the fact that by continuously flowing liquid from one region to an adjacent region by using non-moving or static mechanical components that do not touch the monomolecular layer, a monomolecular layer having surprisingly little damage can be transported to the adjacent region and simultaneouly compressed by the flowing liquid surface. The monomolecular layer can then be coated onto a substrate.

Abstract: A process is described in which a particulate detergent composition which is speckled in appearance is made by spraying an aqueous coloring medium, such as dye solution, containing polyacrylic acid, onto the surface of a moving bed of detergent composition particles containing an alkaline builder, thereby forming a coherent colored surface section or "skin" of detergent composition particles. The coherent section or skin of particles is next broken up and the colored particles are mixed with uncolored particles from the bed to make the speckled detergent composition. Normally, the bed of detergent composition particles is on a moving conveyer belt, which conveyer belt is preferably a weigh-belt, and the amount of coloring medium being sprayed onto the moving bed is automatically regulated by the weight of detergent composition particles on the belt passing under the spray nozzle(s), and the belt speed.

Abstract: The invention relates to treating wood with a wood preservative by applying in one or more recesses made in the wood solid material together with the wood preservative in such a way that the solid material fills up the recesses at least partly, said solid material having a lower water content than the wood treated and exerts a reinforcing effect upon this wood, when it absorbs water and in result expands and/or when a permanent pressure is exerted upon it.Furthermore, the invention relates to products to be used for this treatment, with which by one single act the filling-up of a recess in the wood to be treated and the closing thereof can be effected.

Abstract: An acid and a water-soluble film former are used as a primer for hard tissue (e.g., dentin). The acid has a pK.sub.a less than or equal to that of phenol and the acid and its calcium salt(s) are soluble in the film former. The primer is free of adhesively detrimental quantities of calcium salts that are not soluble in the film former.

Abstract: A composite sheet material is manufactured by steps of impregnating a synthetic resin in a glass fiber sheet material, heating one surface of material to cure and cooling its other surface to retain as uncured.

Abstract: A high strength self-consolidating particle comprised of a particulate substrate, a substantially cured inner resin coating and a fusible curable outer resin coating.

Abstract: A material is provided for adding image areas to grained lithographic offset plates. A polyester resin with imbedded fibers changes the surface characteristics of the printing plate from an oily ink repellant condition to an oily ink receptive condition. In a preferred embodiment, a resin of PBT or PET is provided in generally solid form which may be shaped to a desired form for application to the plate. Corrections may be made to a plate either on or off a printing press and at any stage of the print run.