Abstract: A device for depositing an electrifiable material, e.g. cut strands, fleece, flock, upon an adhesive-coated surface comprises a vibrating sieve which is formed by a multiplicity of cylindrical parallel elements in line contact along respective generatrices and in line contact with an enclosure. In the interstices between these elements the electrifiable material passes through a grid on the bottom of this sieve which is connected to a high voltage source so that electrostatic forces assist in a transfer of the material to the adhesive. The application pattern is determined by a mask on the upper portion of the sieve and a complementary mask on a similar sieve through which excess particles are evacuated from the application region.

Abstract: A method of making an enamel bead and resulting bead which includes the provision of a short length of copper tubing forming a bead core member wherein the copper tubing is heated to a red hot state and rolled in copper enamel flux one or more times to coat the tubing following which the flux coated tubing is again heated to a red hot state and rolled in particulate enamel material to coat the tubing externally with enamel material, then heating the enamel material coating until it melts and is distributed throughout the tubing outer surface in the desired bead configuration and finally cooling the enamel coating to form a highly durable bead having a copper tubing core with an outer layer of enamel of a selected color.

Abstract: The method of providing on location a vitreous enamel bathtub with traction means in a predetermined pattern comprising the steps of:(a) cleaning the vitreous enamel surface;(b) securing a stencil having cutouts therein to the bottom of the tub and, in the stencil cutouts;(c) removing the glaze by etching with acid, scrubbing and sanding;(d) rewashing the cutouts;(e) applying an enamel coat;(f) sprinkling on silica sand;(g) top coating with enamel; p0 (h) removing the stencil;(i) curing the resulting traction means with heat; and(j) removing any excess sand.

Abstract: The invention is a process for the manufacture of substantially pore-free shaped articles from polycrystalline material, such as tungsten carbide, silicon nitride, titanium boride or silicon carbide, in which encased articles preformed from pulverulent materials and having open pores are isostatically hot-pressed in a vacuum-sealed casing of vitreous or ceramic-like material in a high-pressure autoclave using an inert gas as pressure-transfer medium. Before the application of the casing material, a first layer comprising material that can be decomposed or melted, such as an organic wax or a resin-like product, or of a compressible heat-resistant material such as inorganic fibers or felts, is applied to the preformed articles. Then, the encased articles are thermally treated until the glass or ceramic layer is fused or sintered gas-tight. The articles pretreated in this manner are then isostatically hot-pressed.

Abstract: A reinforced bitumen pipe has an inner, strength-providing, reinforced thermosetting resin layer which is coated on its inner and outer sides with a bitumen layer. The bitumen layer on the inner side, and preferably also the bitumen layer on the outer side, is separated from the strength-providing reinforced thermosetting resin layer with the aid of an insulating glass fiber layer into which the thermosetting resin and the bitumen partially penetrate without finding their way up to each other.

Abstract: The present invention relates to bonding a coating of polyarylene sulphide, for example polyphenylene sulphide, to a steel backing by the use of a ceramic or other non-metallic inter-layer or bonding layer. In some cases the bonding layer comprises a layer of fine particles bonded to the backing followed by a layer of coarser particles to which the coating can be more effectively bonded. This results on a coated steel backing capable of being deformed without the coating becoming detached. Such a coated backing is suitable for use as a bearing material, a chemically resistant material or as cookware.

Abstract: A separating material for thin-layer chromatography, comprising a substrate material coated with a thin sorbent layer, wherein the sorbent layer optionally contains a binder, an indicator, or both, is improved in that the sorbent layer has a surface modified by reacting the sorbent layer with a silanizing agent without the exclusion of moisture.

Abstract: A seal coat for use in a traffic surface is formed by reacting a first component comprising a liquid epoxy resin and a blocked polyisocyanate prepolymer with a second component comprising an aliphatic or cycloaliphatic polyamine, and allowing the mixture to cure. Advantageous results are achieved if the mixture, before curing, is allowed to impregnate a matrix, e.g. a non-woven synthetic material.

Abstract: A process of forming a roofing composite comprising applying to a roofing substrate a self-bonding room temperature vulcanizable silicone rubber composition comprising a linear organopolysiloxane, a filler, an alkyl silicate or a hydrolyzate product of an alkyl silicate and a nitrogen functional silane of the formula, ##STR1## where R is selected from the class consisting of monovalent hydrocarbon radicals and halogenated monovalent hydrocarbon radicals, .SIGMA. is a hydrolyzable group selected from the class consisting of alkoxy, phenoxy, halo, aminodialkylamino, and tertiary hydroperoxy and .theta. is a saturated, unsaturated or aromatic hydrocarbon residue functionalized by a member selected from the class consisting of amino, carbonyl, carboxy, isocyano, azo, diazo, thio, thia, dithia, isothiocyano, oxo, oxa, halo, ester, nitroso, sulfhydryl, hydrocarbonylamido, sulfonamido and multiples and combinations thereof and wherein a is a whole number that varies from 0 to 2.

Abstract: Process for preparation of multicolor surprint proofs from a composite photoimaged element, e.g., photopolymer element, having, in order, a sheet support, at least two colored photoimaged elements, and a layer of colloidal silica applied thereon, said colloidal silica being coated from a substantially aqueous dispersion wherein the colloidal silica has an average particle diameter of less than 500 nm and wherein at least 75% of the solids of said dispersion are silica, the silica layer being at least 20 mg/dm.sup.2 when dried. The multicolor proofs obtained contain a sharp image free from any three-dimensional effects and have a delustered, matte appearance which simulates printed press sheets.

Abstract: A method of providing a substrate with a layer of a tertiary compound comprising silicon, silicon carbide and a transition series metal. In accordance with the method, a substrate having at least a surface layer thereon of a transition series metal is coated with silicon carbide particles having an average particle diameter in the range of up to about two microns. The coated substrate is then heated in an inert atmosphere to a temperature between 1000.degree. and 1300.degree. C. for sufficient time to allow diffusion to occur between the silicon carbide and the transition series metal layer, thereby forming the tertiary compound. Substrates coated with the tertiary compound are particularly suitable for preparation of alkali metal/polysulfide batteries wherein the substrate may be exposed to corrosive attack by molten polysulfide salts.

Abstract: In a two-layer enamelling process in which the ground coat and surface coat powders are electrostatically applied to metallic substrates and subsequently baked together, the improvement which comprises employing a ground coat powder having an electrical resistivity of about 10.sup.10 to 10.sup.14 ohm. cm and a surface coat powder having an electrical resistivity of about 10.sup.14 to 10.sup.16 ohm. cm. Advantageously the surface tension of the ground coat amounts to at least about 0.280 N/m and the surface tension of the surface coat to at most about 0.260 N/m, the difference between the surface tensions of the ground coat and surface amounts to at least about 0.050 N/m, the ground coat powder has an electrical resistivity 10.sup.12 to 10.sup.14 ohm. cm and at least about 10.sup.2 ohm.

Abstract: This invention relates to a magnetic recording medium comprising a non-magnetic support and magnetic layer provided thereon containing a ferromagnetic metal powder, the magnetic layer having a multilyaer structure consisting of a lower layer containing acicular grains obtained by dry process reduction and an upper layer containing chain-like grains obtained by wet process reduction, the upper layer being provided on the lower layer. This magnetic recording medium is particularly suitable for high density recording.

Abstract: A method and apparatus for making particle-containing plastic coatings on articles comprises cascading onto prepared surfaces of the articles a mixture of powdered resin and particulate material and adhering and curing the mixture onto the prepared surfaces by heating.

Abstract: A unique method for applying a lightweight cementitious coating to either existing or new roof surfaces. The invention relates to the method of preparing the coating mixture and its manner of application.

Abstract: A rotor blade is manufactured by making a soft alloy into a blade body with a curved section, joining a hard alloy to the leading edge of the blade body, coating the back side surfaces of the leading and trailing edge portions of the blade by alternately giving at least one coat each of a Ni-Cr-B-Si alloy and WC by spraying and fusing the coats onto the backing surfaces, and then coating the entire front side surface of the blade in the same way.

Abstract: Method and apparatus for conditioning the surface of the strings of a racquet such as used in tennis and other racquet sports. The method comprises a first step of applying a first primer coat of adhesive to the strings in the central portion of the racquet by spraying it through a template. The first coat of adhesive is applied to both sides of the strings and after drying a second coat is applied thereto. A granular substance, such as white quartz fractured to the size of 1/50th of an inch having a general cubical-shape, is sprinkled over the second coat of adhesive while damp. After the abrasive settles in and dries, a final sealing layer of adhesive is sprayed over the quartz crystals and second coat. This process both coats and locks the strings together at the intersections to lengthen strike-life and also forms a rough frictional surface on the strings to provide better ball control and create a better spin on the ball when hit.

Abstract: In one exemplar embodiment a simulated stone article having a pre-formed acrylic sheet "skin" is integrally bonded to a simulated stone matrix layer. The surface of the acrylic "skin" is cleaned with an inert organic solvent to make the surface more receptive to molecular bonding. A coat of urethane is applied to the acrylic "skin" surface and permitted to cure. The simulated stone matrix is a composition including a catalyzed polyester bonding resin, a simulated stone aggregate mix, coloring, veining and pigmentation agents and an exothermic reducing agent for slowing the setting time and lowering the temperature of the bonding resin for permitting greater flexing of the composition during shrinkage of the resin while curing for improving the bond between the acrylic "skin" and cured urethane, and the bonding resin of the simulated stone matrix.

Abstract: A method and composition for enameling ferrous objects which eliminates the necessity of pickling and nickel coating the ferrous object prior to enameling. The ferrous surface is merely cleaned and then a reactive fritted coating is applied to the clean surface. The chemical and physical properties of the reactive coating are such that the coating fuses at a relatively low temperature to provide a fused coating which chemically etches the underlying ferrous surface to provide a good bond between the two. The reactive coating should contain at least 5% of one or more adhesion promoting oxides, and at least 1% of the 5% mentioned consists of cupric oxide. A cover coat of a conventional frit may be applied over the reactive coating. During firing, the reactive coat melts first and bonds itself to the underlying ferrous surface, whereupon the cover coat fuses and forms the finished procelain enamel coating.

Abstract: A recording material for use in a pressure sensitive copying system has an undercoating layer which is formed on a surface of a base sheet and on which a color former coating layer including microcapsules each encapsulating an oil droplet containing a color former material dissolved or dispersed therein. The undercoating layer comprises finely divided inorganic pigment particles and a binder and is substantially unreactive with the color former material included in the color former layer.

Abstract: Described is a method for protecting metallic substrates which comprises applying thereto silicon containing compositions produced by the steps of:1. providing a mixture of an organo silicate or a partial hydrolysate thereof in a solvent therefor;2. adding a weak acid to said mixture and maintaining the pH acidic, preferably at a range from about 1 to about 4;3. partially hydrolyzing the mixture; and4. adding a strong acid to said mixture to further hydrolyze the mixture; and curing the composition.The composition may contain also glass flakes.

Abstract: A flexible anti-skid material for application to various outdoor and indoor surfaces to produce a long lasting, low-cost, non-skid waterproof surface is formed of a smooth layer of paint adhered to one side of a flexible carrier material and one or more layers of paint each having particles of sand embedded therein adhered to the other side of the flexible carrier material, the anti-skid material being applied to desired surfaces with the use of an adhesive. A method of making the flexible anti-skid material includes coating a hard, smooth substrate with paint, placing a flexible carrier material on the coating of paint, coating the flexible carrier material with paint, distributing sand on the coating of paint, repeating the latter two steps to produce a desired thickness for the anti-skid material, allowing the anti-skid material to dry, and removing the substrate.

Abstract: An article of manufacture, such as cookware, having a composite layer adhered thereto and a process for forming it are disclosed, characterized in that the layer is a porous ceramic body having a continuous, communicating pore structure, and a film-forming, polymerized organic resinous impregnant, such as a silicone compound, fills at least some of the pores. The impregnant is adapted to serve as a release agent. As a result, the article acquires a composite layer having at least the abrasion resistance of the ceramic and the release properties of the resinous impregnant.

Abstract: Linear elements such as filaments having grafted nibs are disclosed. The grafted nibs are generally fibrils and/or scales which can be flexible or rigid. The nibs can be randomly grafted onto the linear element or they can be inclined or oriented in one direction so as to offer relatively little resistance to penetration into a material and greater resistance to pulling out. The linear element with grafted nibs can be twisted or spun into a yarn or it can be used as a yarn component. The linear element with grafted nibs or a yarn thereof can be used as a non-slip thread, as laces, and the like or they can be a component of woven and non-woven articles.Also disclosed is a method for making the linear elements having a plurality of nibs physically bonded thereto. A substantially linear element such as a thread, a wire, a monofilament, a yarn, a ribbon or the like is contacted with a static or agitated mass of nibs thereby causing same to become physically bonded to the linear element.

Abstract: This is concerned with a method of making a pipe to increase its wear resistance by coating the interior thereof with a wear resistant coating which includes wear resistant particles, and the pipe produced by such a method.

Abstract: Farinaceous material and water are mixed in proper proportion, applied to panels to be decorated and/or protected in desired designs or embedded with various inert materials, and then dried. The coating material cracks, then it is stained and coated with shellac, lacquer or varnish to give further protection. After staining, the coating material has the appearance of inlaid stone.

Abstract: Structures for supporting printing particles in spaced aggregates as mounds and towers, for use in pulsed electrical printers, and method for their production. The structures comprise a base sheet having a roughened or microcavernous surface to receive the printing particles. The base sheet may be formed of or coated with conductive material, and may comprise a magnetizable material useful in forming and retaining the aggregates.

Abstract: A reinforcement member for concrete bodies includes a bamboo rod having a roughened surface consisting of the bamboo cortex, and a substantially continuous coating of crystallized sulfur adhering to the roughened surface to prevent moisture absorption and swelling of the bamboo rod. The rod may have a helical wrapping of wire to further prevent swelling. The manufacture of the member includes roughening the rod by removing the bamboo article to expose the cortex, and dipping the rod in a bath of molten sulfur coating.

Abstract: The invention disclosed is a process for the production of a cellular thermosetting foam provided on at least one surface with a reinforcing and fire resisting layer of particulate material. A foamable composition is distributed on a suitable substrate surface and a layer of particulate material is evenly distributed on the surface of said composition prior to complete curing. As inexpensive material such as sand or gravel may be used, the process is economic and easy to apply. It can be used for the production of slabs of cellular plastic or of foam layers with a protective coating on e.g. wall panels, roofs, insulating material and the like.

Abstract: A method for producing a barrier in a thermally insulated container lined with polyurethane foam for storage or transport of liquefied gases, wherein a plurality of layers of an epoxy resin formulation and a glass-fiber material are applied in a particular sequence resulting in a barrier of superior quality essentially free of pinhole flaws.

Abstract: A method for manufacturing an object of silicon nitride by isostatic pressing of a preformed body of silicon nitride powder utilizing a pressure medium at a temperature sufficiently high to sinter the silicon nitride. The preformed body is subjected to a degassing operation before isostatic pressing. An inner porous layer of a first material and then an outer porous layer of a second material are applied on the preformed powder body. The inner porous layer is transformable, at a temperature below the sintering temperature for silicon nitride, into a pressure medium impermeable layer. The outer porous layer is also transformable into a pressure medium impermeable layer, but at a temperature which is lower than the temperature when the inner porous layer is converted into its pressure medium impermeable form.

Abstract: A process and resulting product are disclosed characterized by superimposing two layers of essentially dry, differing frit compositions onto a substrate and then firing only once to form a dual coat coherent ceramic layer. The composition of the two frits is such that the first or base coat fuses and stabilizes during the firing operation at temperatures below that at which the second or cover coat fuses and stabilizes. Desirably, the first layer forms an amorphous glass adherent to the substrate that is predominantly an alkaline oxide borosilicate glass and preferably an alkaline borofluorosilicate glass.

Abstract: The laminate includes a partially cured, flexible acrylic face sheet having a primer layer on one surface thereof bonded to a binder layer having a layer of reflective glass beads embedded therein and protruding therefrom and a sealer layer on the exposed surfaces of the glass beads, the laminate being completed with a spacer layer bonded to the sealer layer and having a reflective mirror-like thin metal coating on the outer surface thereof. The binder layer, sealer layer and spacer layer, or films are all made from basically the same uncured polyvinyl butyral material. The method of forming the acrylic face layer, the use of soft rubber pressure rolls in bonding a glass bead carrying partial laminate to a preformed spacer film, and the method of making the laminate of the invention and the compositions used therein.

Abstract: The present invention provides a method of producing a shaped object by coating a pattern with a slurry of a refractory powder in a binder. The binder comprises an acidic zirconium salt and also a gellation delaying agent. The slurry is caused to gell by contacting it with ammonia vapor.

Abstract: Retroreflective-treated fabrics, and products and methods for forming the treatments are taught. As an example, a free-flowing mass of minute retroreflectorization particles that each comprise hemispherically reflectorized transparent microspheres supported in a softenable binder material are cascaded onto a fabric. The binder material is softened during application to provide adhesion of the particles to the fabric. A very sparse retroreflective treatment can be provided, which leaves the fabric with nearly its full original appearance as well as hand, feel, and breathability. Yet the treatment will greatly increase the safety of a pedestrian by making him visible at night.

Abstract: A method of forming a porous capillary layer of a metal oxide ceramic material onto a metal oxide ceramic substrate, which comprises covering the surface of the substrate with an aqueous slurry of a powdered mixture comprising the metal oxide of the ceramic substrate, silica and an alkali metal or alkaline-earth metal oxide, the powder mixture having a maximum particle size of about 44 microns, removing excess of slurry, depositing onto the wet surface a layer of granular ceramic material having a particle size of about 250 to about 500 microns, the granular ceramic material being applied in excess relative to the powder of the aqueous slurry to insure that a porous capillary structure will be obtained and causing the slurry to be drawn up between the particles so as to absorb substantially all the slurry, and firing the coated surface at a temperature to effect bonding of the ceramic layer, the powdered constituents of the mixture being proportioned to provide liquid phases at about 200.degree.-300.degree.

Abstract: Retroreflective sheeting having improved resistance to delamination is prepared by imparting a grid pattern to a monolayer of glass spheres having a light reflecting layer thereon, applying a sphere binder layer over the grid pattern imposed on the monolayer of glass spheres so as to adhere to the reflective layer on the monolayer of glass spheres, and pressure consolidating the resulting composite against a clear, protective overlay film, wherein the overlay film bonds to the sphere binder layer in the grooves formed by the grid pattern.

Abstract: This disclosure relates to multi-layer coatings of ceramic paint and teaches how they may be made and used. It discloses that such coatings are made by applying finely-divided material, such as -100 micron silica, to ceramic paint while it is wet, curing without fusing the paint, and then applying another coat of ceramic paint. Many uses, in places where known ceramic coatings or claddings have exhibited poor resistance, adhesion, or life, are disclosed.

Abstract: An elastomeric pavement repair composition for pavement failure and a method of preparation thereof comprising of paving grade asphalt and rubber. The asphalt is heated to an elevated temperature and the rubber is combined therewith. The resulting composition is mixed to form a hot jellied composition which can be applied to cracked or distressed pavements to repair the same.

Abstract: The dissolving and/or dispersing of relatively large proportions of reclaimed rubber into molten paving asphalts is facilitated by incorporating into the asphalt a minor proportion of a highly aromatic, high-boiling, high-flash-point mineral oil. The resulting mixtures can be held at temperatures above 300.degree. F for substantial periods of time without becoming too viscous for convenient handling, thereby facilitating the application thereof to roadways. The rubberized asphalt mixtures are particularly useful in the form of stress absorbing membrane interlayers between old, damaged pavement surfaces and an overlayer of new asphalt concrete, for providing chip-seal coatings over old pavement, as crack fillers in Portland Cement concrete or asphalt concrete pavements, and bridge deck waterproofing membranes.

Abstract: The pigment layer side of a base sheet having a layer of tacky adhesive on one side and a layer of pigment and a binder therefor on the opposed side is coated with a silicon composition. The coarse surface texture of the pigment layer contributes to the formation of a discontinuous silicon composition layer. The discontinuities in the silicon layer enable the side of the base sheet associated therewith to be printable and strippable with respect to the tacky adhesive.

Abstract: Aluminum substrates are provided having a coating of particulate material bound thereto by means of an in situ formed binder of aluminum hydroxyoxide. The coated aluminum constructions have utility in imaging and reproduction processes (e.g., as printing plates, as electrographic elements, etc.), as magnetic recording surfaces, controlled roughness surfaces, decorative panels, protective surfaces, etc.

Abstract: Ceramic color compositions which are moisture or steam settable are described. The compositions are formulated from a dispersion of ceramic pigments or glass colors in certain moisture or steam set type vehicles and can be applied to green or bisque ceramic ware using standard decorating techniques and then set to a coating by exposure to moisture or steam. Over-glazing of the coating provides decoratively glazed ware of excellent quality and durability.

Abstract: A compound mica sheet is prepared by bonding a mica sheet to a woven fabric through a powdered epoxy resin with curing agent. The mica sheet holds a cured thermosetting resin composition impregnated therein and has an uncured epoxy resin composition including a curing agent impregnated therein. When thermosetting resin is forcedly impregnated, through vacuum/pressure impregnation, into a coil wound with the compound mica sheet which is adapted for use in medium and high voltage electric apparatus, and then cured, an excellent insulated coil is obtained.

Abstract: A method of removing immiscible fluids such as oil spills from the surface of bodies of water which comprises placing an adsorbant compound on the water surface in contact with the immiscible fluid and maintaining contact between the surface of the immiscible fluid and the adsorbant material until the immiscible fluid is adsorbed. The adsorbant compound consists of an admixture comprising from between about 30% and 70% by weight of lead slag mineral wool, with the balance being a finely divided natural stone substance containing substantial quantities of iron, aluminum, and magnesium oxides, including such natural stones as trap rock, basalt and gabbro. The lead slag mineral wool is treated with a hydrophobic-oil-soluble hydrocarbon chain substance, such as oleic acid to wet the surface of the mineral wool prior to mixing with stone flour. The lead slag mineral wool is preferably fragmented into nodules having a diameter of, for example, from 1/2 inch to 1 inch.

Abstract: Abradable seal composite structure having a porous, abradable ceramic surface layer which is resistant to high temperature oxidation and a metallic bottom layer capable of being bonded to a metallic substrate, with at least two intermediate layers consisting of ceramic/metal mixtures. The intermediate layer next to the ceramic layer has the highest ceramic content, with the remaining intermediate layers having progressively lower ceramic content and correspondingly higher metallic contents. The composite is made by laying up the layers in wet paste form and then drying them, after which the composite can be heated to bond it to the metallic substrate.

Abstract: A submersible object having a drag reducing coating thereon, and a method r its preparation, which comprises applying to the object a binding agent and sufficient hydrophobic silica to provide the object with a nonuniform coating, the function of the binding agent being merely to fix the hydrophobic silica on the submersible object.

Abstract: Crosslinkable ethylene-vinyl acetate copolymer resins are rendered amenable to forming adherent laminates with cross-linkable silicone rubber by dusting the surface of either the resin or rubber, or both, with a bonding agent.

Abstract: Refractory linings for molten metal containers, e.g. tundishes, are protected by applying thereon first a layer comprising essentially unbonded carbonaceous particulate material and then on top of the first layer a second layer of bonded particulate material.

Abstract: Retroreflective-treated fabrics, and products and methods for forming the treatments are taught. As an example, a free-flowing mass of minute retroreflectorization particles that each comprise hemispherically reflectorized transparent microspheres supported in a softenable binder material are cascaded onto a fabric. The binder material is softened during application to provide adhesion of the particles to the fabric. A very sparse retroreflective treatment can be provided, which leaves the fabric with nearly its full original appearance as well as hand, feel, and breathability. Yet the treatment will greatly increase the safety of a pedestrian by making him visible at night.