Abstract: A light-transmitting recording material for electrophotography is disclosed which has a light-transmitting base material and a surface layer. The surface layer contains a thermoplastic resin and a release agent having a melting point of from 40.degree. C. to 120.degree. C. Also, a heat fixing method is provided in which a toner image is formed and heat-fixed on the above light-transmitting recording material.

Abstract: The present invention relates to a process for adhering a powder to a substrate. The process includes the steps of: a) providing an oscillating magnetic field, b) continuously introducing into the magnetic field coating material, a substrate, and a means of affixing the coating material to the substrate by forming a fluidized bed of at least the coating material and providing sufficient force to cause the coating material to adhere to the surface of the substrate, and c) continuously collecting the coated substrate.

Abstract: An apparatus and method for nonextrusion manufacturing of catheters that can be used to produce catheters having a simple or complex configuration. A polymer material in a particulate preform is applied in a layer over an outer surface of a core member. By applying the polymer material in a particulate preform, a composition of the polymer material can be varied continuously as it is being applied to provide a variable hardness over the length of the catheter. A fibrous reinforcement can be used having a constant or variable pitch and a constant or variable number of fibers and fiber types. Sensors can be easily placed in a wall of the catheter as the catheter is being fabricated, thereby allowing more sensors to be used without placing conductors in the lumen of the catheter. Deflection passages can be provided in a wall of the catheter for inserting a wire to deflect the catheter.

Abstract: An improved article having a retention element applied to a predetermined portion thereof. The retention element is a soft pliable resin based material that has pockets formed in it through the use of a blowing agent that has been added to the material prior to coating and heating.

Abstract: An electrode is made by depositing a mixture of particulate carbon and very fine thermoplastic binder on the surface of a fluid permeable dielectric web. The coated web is then passed between a pair of rollers that apply heat to at least the Vicat softening point of the binder and simultaneously apply pressure to fuse the carbon and binder to the web. Two of such electrodes are employed to manufacture a flow-through capacitor suitable for use in water treatment.

Abstract: This invention concerns a process for imparting corrosion and creep resistance to a coating prepared from a particulate polymer composition and applied from a fluidized bed or by electrostatic spraying over metal substrates. The process of the present invention provides for maintaining the content of acid functionality of an acid-functionalized semicrystalline or acid-functionalized amorphous particulate polymer of the particulate polymer composition within a desired range. The acid functionality on the particulate polymer can be maintained, by crosslinking and/or neutralizing, within a desired range of the acid content which results in imparting corrosion and creep resistance to the coating applied over the metal substrates. Neutralizing the acid functionality of the polymer component results in hardening the coatings resulting therefrom. The process further provides for adding anticorrosive pigments to the composition for further improving corrosion resistance of the resultant coatings.

Abstract: Opaquely pigmented or thick filmed powder coatings for heat sensitive substrates, such as wood, wood composites, for example, medium density fiber board, and plastics, that can be fully cured, especially near the substrate, through the incorporation of a dual cure system in the powder comprising a thermal initiator, such as a peroxide, along with a UV initiator. The UV initiator cures the surface, while the thermal initiator cures at the substrate. Surprisingly, virtually no pregelation occurs during the heated melt and flow out step prior to UV curing. Consequently, the hardened film finish formed on the surface exhibits exceptional smoothness which is comparable to that of traditional UV curable powders. The hardened film finish is also fully cured throughout and exhibits exceptional adhesion to the substrate which cannot be achieved with traditional UV curable powders that have been pigmented.

Abstract: A mechanism and process for coating tapped holes in specialty articles having varying external configurations, such as metal stampings. The specialty article is positioned in a preselected orientation at a loading station, and is then engaged by a carriage assembly and moved from the loading station to a heating station, and then to a spray and discharge station. During movement between stations, the article is maintained in the preselected orientation to allow proper heating and spraying of the tapped holes.

Abstract: Low gloss appearance in a coating derived from UV curable powder coatings can be achieved by using UV curable powder containing crystalline resins or blends of crystalline and amorphous resins and after heat fusing the powders together, allowing the crystalline resins in the coating to cool and recrystallize to a low gloss finish before curing with UV radiation.

Abstract: Paints of different color brightness not deposited on the work to be coated in a powder coating process are recovered as a mixture, and a fresh paint of high or low color brightness is added to the mixture to adjust its color brightness and thereby prepare a fresh mixture of medium color brightness which can be used as a paint of medium color brightness.

Abstract: The invention is a method for improving the flow of particulate lacquer powders when the lacquer powders are coated on a substrate and the substrate heated to fuse the lacquer particles to provide a finished lacquer surface on the substrate. The flow control agent is an oxazine, oxazoline, oligoxazine or oligoxazoline and salts of the compounds with protonic acids. The flow control agents when included in power lacquer formulations improve the flow of the lacquer when the powder lacquer coated substrate is heated to fuse the coating.

Abstract: A non-metal window muntin formed from plastic or wood is described for use in hermetically sealed insulated glass windows. The process for forming the muntin includes machining polystyrene sheets which are painted with a latex paint and baked prior to use between sealed glass of the window.

Abstract: High-tensile steel, particularly automotive coil springs formed of high-tensile steel, are coated first with an epoxy coating powder containing high levels of zinc and then with a poly(ethylene/acrylic acid copolymer) coating powder. Both coatings are applied and fused or fused and cured at temperatures of 325.degree. F. or below so as not to affect the metallurgic properties of the steel. The dual-coating protects the steel from pitting and corrosion.

Abstract: A heat-curable, water-dispersible resin composition comprising 50 to 90% by weight of a film-forming polymer (A) obtained by copolymerizing an ethylenic monomer having a saturated C.sub.6 to C.sub.18 hydrocarbon group, a hydroxy-containing ethylenic monomer, an acidic group-containing ethylenic monomer and another ethylenic monomer, and 50 to 10% by weight of a hydroxy-terminated polyester resin (B), said resin (B) being grafted on said polymer (A) by transesterification, and at least part of the acidic groups in said polymer (A) being neutralized with a base (C); a method of producing said resin composition; a water-based paint composition comprising said resin composition and a curing agent; and a two-coat one-bake coating method which uses said paint composition as a base coat. This invention provides a water-based paint composition which shows good workability in a broad humidity condition range, and excellent in storage stability, paint film appearance and performance characteristics.

Abstract: Disclosed is a process for the manufacture, by coating, of a plastic web. A plastisol is deposited as a layer onto a flat support, to obtain a coating layer in the pasty state. Before the plastisol is gelled, powdering is performed by accelerating particles of plastic powder toward, the external surface of the coating layer. The powder includes particles of a thermoplastic material capable of at least partially being integrated into or dissolving in the plastisol. The particles are homogeneously incorporated in order to form a single matrix with the thermoplastic base material of the plastisol.

Abstract: A coated metal drum (38) for a skimmer apparatus mounted on a buoyant frame (10) floating on a body of water for removal of hydrocarbon material from the body of water. The coated drum (38) has a metal drum base (80) which is blasted to provide a roughened cylindrical surface for the coating (84, FIG. 4). The coating comprises a vinyl ester resin material which is sprayed in a plurality of layers (86) onto the roughened metal surface and is cured to provide a hard abrasion resistant surface for the adherence of hydrocarbon material thereon.

Abstract: The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll substrate and the outer cover, or cover. A compressive layer has the properties of being rigid enough to allow the cover to be applied to the roll, and compressible enough to deform and absorb the stresses which occur as the cover is shrinking during processing.In one embodiment, the intermediate compressive layer comprises a three dimensional fabric that is filled preferably with a thermoset resin system which cures at lower temperature than cover. In a second embodiment, the precise amount of shrinkage in the roll is predetermined to a high enough degree of accuracy so that a depth for the fabric layer can be used to compensate for the amount of shrinkage, thereby eliminating the need for filling. In a third embodiment, the compressive layer is comprised of a meltable material wherein said material melts at cure temperatures.

Abstract: As a means of providing a patterned coating on a substrate, either decorative or functional, coating powder is applied to a substrate. Then the coating powder is fused or fused and cured in selected portions by computer-guided laser. One application of the invention is to fuse coating powder into a resist pattern for the production of printed circuitry.

Abstract: Opaquely pigmented or thick filmed powder coatings for heat sensitive substrates, such as wood, wood composites, for example, medium density fiber board, and plastics, that can be fully cured, especially near the substrate, through the incorporation of a dual cure system in the powder comprising a thermal initiator, such as a peroxide, along with a UV initiator. The UV initiator cures the surface, while the thermal initiator cures at the substrate. Surprisingly, virtually no pregelation occurs during the heated melt and flow out step prior to UV curing. Consequently, the hardened film finish formed on the surface exhibits exceptional smoothness which is comparable to that of traditional UV curable powders. The hardened film finish is also fully cured throughout and exhibits exceptional adhesion to the substrate which cannot be achieved with traditional UV curable powders that have been pigmented.

Abstract: A recording medium comprising a substrate and a porous layer formed on the substrate, said porous layer comprising alumina hydrate particles and nonionic or cationic water-insoluble resin particles having an average particle size of from 0.005 to 0.1 .mu.m.

Abstract: Process for producing a multilayer lacquer coating, in which a primer of an electrophoretically depositable aqueous coating agent (1) is electrophoretically applied on to an electrically conductive substrate and is then stoved, whereupon a color-giving and/or effect-producing base lacquer coat of an aqueous coating agent (II) is applied and stoved and this coat is then provided with one or more clear lacquer coatings, in which processa) as the coating agent (I), a coating agent which, in the stoved state, will produce an electrically conductive primary coat is used,b) the base lacquer coat is formed by an electrophoretically depositable aqueous coating agent (II) by a process of electrophoretical deposition,c) the overall dry layer thickness of the dry lacquer coat or dry lacquer coats is about 40 and 80 .mu.m, andd) the overall dry layer thickness of the multilayer lacquer coating is about 80 to 110 .mu.m.

Abstract: A mechanism and process for coating tapped holes in specialty articles having varying external configurations, such as metal stampings. The specialty article is positioned in a preselected orientation at a loading station, and is then engaged by a carriage assembly and moved from the loading station to a heating station, and then to a spray and discharge station. During movement between stations, the article is maintained in the preselected orientation to allow proper heating and spraying of the tapped holes.

Abstract: A composite manufacturing system moves a multi-fiber tow through a processing space. A resin particle source provides particles to the space. This source may include an airstream entrained with particles which is discharged into the space through an orifice; the airstream diverging as it enters the space. An electrode is disposed in the space to electrostatically charge the particles and facilitate deposition of the charged particles on the tow. In one embodiment, the electrode includes a corona wire disposed proximate to the tow to provide a generally cylindrical charging region. An electric field useful to direct deposition of the particles may be generated by appropriately shaping a wire electrode and orienting it in a predetermined manner relative to the tow. After the particles are deposited, a fixation unit may be used to at least partially melt the deposited particles. A processing stage may be included which has a pair of surfaces configured to heat and compress the tow therebetween.

Abstract: Method of making a two-sided fiberglass tape measure with two differently colored nylon resin coatings characterized particularly in that a device is used that can coat simultaneously both sides of a fiberglass tape, both top and bottom, in a single forming step, yet producing two different colorations.

Abstract: A process for preparing a metal plastic composite comprising prime coating at least a portion of a metal substrate with one or more layers of an adhesion primer powder consisting of a solid thermosetting resin using a conventional powder application technique, heating the thus coated substrate to a temperature sufficient to melt a surface coating powder to be subsequently applied, immersing the thus coated substrate into a fluidized bed of a surface coating powder for a time sufficient to give the thickness of surface coating desired.

Abstract: An image recording paper has a recording surface comprised of a film obtained by the steps of coating or impregnating a substrate comprised primarily of a pulp fiber with a liquid composition comprising a silicone compound and a finely divided material, which silicone compound is capable of combining with the substrate and with the finely divided material by a chemical reaction, and drying the coated or impregnated liquid composition. The liquid composition preferably contains besides the silicone compound a modified-silicone oil having in a molecule thereof a reactive group. This image recording paper eliminates a conflict between fixability and releasablilty of an image forming material and is easily reusable without altering the appearance of plain paper.

Abstract: Continuous process for producing unidirectionally reinforced composite materials by impregnating a continuous reinforcing fiber strand with a thermoplastic matrix in an impregnating bath containing a dispersion of a thermoplastic powder by measuring the width of the strand leaving the impregnating bath and using this measured value for regulating the polymer concentration in the impregnating bath.

Abstract: In a process for producing a multilayer lacquer coating, eg for motor vehicles, a first coating layer of an aqueous coating agent (1) is electrophoretically applied on to an electrically conductive substrate and is then stoved. As the coating agent (I), a coating agent which, in the stoved state, will produce an electrically conductive coating layer is used. An electrically insulating second coating layer of an aqueous coating agent (II), which differs from (I), is electrophoretically deposited and stoved. A third basic lacquer coating layer of a colour-giving and/or effect-producing coating agent is applied, and a fourth transparent coating layer of a clear lacquer coating agent is applied, the last-mentioned two coats being stoved together. One or more further transparent coating layers may be applied.

Abstract: A wear-resistant hardfacing and a method for applying such a hardfacing is taught herein. A finely powdered, wear-resistant alloy and a polyvinyl alcohol (PVA) solution slurry is coated onto the metal surface of a tool, implement, or similar item to be hardfaced. Alternatively, a binding coating of PVA solution may be applied to the metal surface followed by application of a layer of a powdered alloy. After the slurry or PVA binding coating has dried, leaving a dry coat of alloy in a PVA matrix, the metal surface is heated to the fusion temperature of the alloy in vacuum, in an inert gas atmosphere, or in hydrogen atmosphere. The metal item with the fused coating is heat treated to impart desired mechanical properties to the part substrate material. The method of the present invention gives a smooth, dense coating of the wear-resistant hardfacing without nonmetallic inclusions.

Abstract: An article such as a spacecraft thermal radiator includes a substrate having a white thermal control coating thereon. The thermal control coating is formed of a matrix of a silica/silicate transformation product of a ceramic precursor, and a plurality of doped zinc oxide pigment particles distributed in the matrix. The zinc oxide pigment particles are doped with an element that forms shallow donorlike states in the zinc oxide. The coating has a solar absorptance of from about 0.2 to about 0.3 and an initial electrical resistivity of from about 1.times.10.sup.6 ohms per square to about 1.times.10.sup.8 ohms per square. The coating is stable at continuous operating temperatures of 225.degree. C., with short-term exposures of up to 800.degree. C.

Abstract: A method for producing a patterned shaped article. A prescribed amount of dry particles are supplied onto a position on a base surface. The particles are applied according to a pattern which is desired. A formation device is used to form the particles into a course which corresponds to the pattern desired. The side face of the device has a constant produced angle slope. A different type of dry particles is then supplied onto the remaining portion of the base surface. The particles are allowed to set into an integral mass either as they are or after being overlaid with backing.

Abstract: The invention relates to a method for the preparation of the fibre product pre-impregnated with a polymer (prepreg) where the method includes: a) coating the fibres with a powder comprising at least one polymer and optionally an agent having the ability to initiate the polymerization reaction of the polymer, b) adding to the composition obtained in step a) a solvent possessing the ability to dissolve the polymer but lacking the ability to initiate the polymerization reaction of the polymer, and c) evaporating the solvent. Alternatively, the polymer (optionally including the initiating agent) can first be dissolved in the solvent after which the fibres are contacted with the solution thus obtained and the solvent is evaporated. The surface of the fibres is preferably treated so as to facilitate the bonding of the polymer to the fibres, whereafter the surface treated fibres are coated with the polymer powder.

Abstract: A method of forming a thermoplastic layer on a flexible, two-dimensional substrate is provided. In the steps of the method, a thermoplastic powder is provided having a melt flow index of at least 0.008 grams/10 minutes, the powder is applied to at least one surface of the substrate to form a particle layer, and the coated substrate is subjected to elevated heat and pressure until particle layer is fused into a continuous layer and the continuous layer is bonded to the substrate. The invention also includes a powder for preparing the thermoplastic layer and a method of making the powder.

Abstract: A method of printing colorful patterns on a powder-coated surface of an article comprises the following steps. The surface of a frame is coated with a powder-coated layer by powder coating method. The frame is enwrapped by the stencil paper. The stencil paper is made by mimeographing method with printing colors and patterns on the stencil paper. The enwrapped frame is heated at about 120.degree. C. to 180.degree. C. for about 30 seconds to 5 minutes. Thus the colors and patterns on the stencil paper will melt and penetrate the powder-coated surface of the frame. The enwrapped frame is cooled. After the enwrapped frame is completely cool, the stencil paper is stripped from the frame. The colors and patterns on the stencil paper is transferred to the powder-coated surface of the frame.

Abstract: The invention concerns a process for manufacturing a fusible interlining (1) wherein a base fabric (2) receives a coating of thermofusible polymers distributed in points (3), characterised in that the following steps are successively carried out: depositing a sublayer (5) of polymers on a transfer medium (6, 7) comprising a regular and smooth surface; transferring the points thus obtained onto the base fabric (2); applying the thermofusible particles (10) on the sublayer (5); running the fusible interlining (1) thus obtained through a heating and/or radiation chamber (12).

Abstract: Sulfonimide cure catalysts are used with aminoplast crosslinking agents and resins capable of reacting with aminoplast crosslinking agents to prepare heat curable compositions capable of crosslinking to form coatings and articles. Liquid or solid curable compositions may be prepared. Solid sulfonimide catalysts used in combination with solid glycoluril type crosslinking agents are well suited for powder coating systems containing hydroxy- and carboxy-functional resins.

Abstract: A decorative laminate surface layer composition is prepared by selectively applying dissimilar thermoset or thermoplastic polymers to a decorative laminate facing sheet to achieve a brillant visual or pearlescent appearance. The surface of the decorative laminate sheet consists essentially of resin particulates which melted and flowed in the forming method to form a surface layer.

Abstract: One or more particulate active agents are fused to the surface of a substrate web by mixing the particulate agents with a particulate binder having a particle size not exceeding an average diameter of approximately 40 microns and coating the composite mixture onto the surface of the substrate. Thereafter, the coated substrate is heated to a temperature equal to or greater than the Vicat softening temperature of the binder and compressed within the nip of a pair of pressure rolls to achieve fusion. If desired, a top layer may be placed upon the coated composite prior to the compression step. Also disclosed are various products manufactured by the process.

Abstract: A powder spray apparatus for coating threaded fasteners capable of operating at an optimum spray condition. Air supply and powder supply tubes communicate within an air/powder entrainment block. The jet diameter of the air supply tube is sized to provide an optimum spray condition at which a constant supply of powder is provided through a powder spray tube at an optimum powder density and velocity. These powder density and velocity conditions maximize the powder build rate on the threads of the fastener, and also increase production rates. The resulting coated fasteners exhibit a low torque scatter, and a highly uniform patch. A method for operating a powder spray apparatus at the optimum spray condition also forms part of the present invention.

Abstract: The invention concerns a method for the production of surface coatings from monodisperse poly(meth)acrylate particles, produced by precipitation polymerization in a halogen-free solvent L in the presence of a block copolymer BCP, wherein the poly(meth)acrylate particles are synthesized from at least 60 wt % monomer units M of formula I: ##STR1## wherein R is hydrogen or methyl, and R.sub.1 is an alkyl radical of 1 to 8 carbon atoms, a substituted aryl radical, or an aralkyl radical, wherein the resulting poly(meth)acrylate has a Vicat softening temperature VET according to ISO 306 between 30.degree. and 110.degree. C., and wherein the specific viscosity of the poly(meth)acrylate in chloroform at 25.degree. C., according to DIN 51562, lies between 10 and 150 cm.sup.3 /g.

Abstract: The problems caused by chemical and thermal shrinkage of hard roll covers, are reduced by the inclusion of one or more intermediate compressive layers between the metal roll and the outer cover, or topstock. A compressive layer has the properties of being rigid enough to allow the topstock to be applied to the roll, and compressible enough to buffer and absorb the stresses which occur as the topstock is shrinking during processing.In one embodiment, the intermediate compressive layer comprises a three dimensional fabric that is filled preferably with a thermoset resin system which cures at lower temperature than topstock. In a second embodiment, the precise amount of shrinkage in the roll can be predetermined to a high enough degree of accuracy so that a depth for the fabric layer can be used to compensate for the amount of shrinkage, thereby eliminating the need for filling. In a third embodiment, the compressive layer is comprised of a wax material.

Abstract: A method for forming a pattern on the surface of an aluminum extrusion comprises the steps of cleaning the surface of the aluminum extrusion; forming a film on the cleaned surface of the aluminum extrusion; providing a base color coating on the surface of the aluminum extrusion; baking the aluminum extrusion at a temperature of 150.degree.-300.degree. C.; washing the surface of the aluminum extrusion with an organic solvent; printing the pattern onto the base color coating by means of a power-driven metal roller which has the pattern formed on an external face thereof and which has ink provided thereon, and a polyurethane roller which contacts rotatably the external face of the metal roller and the base color coating of the aluminum extrusion for transfer printing the pattern from the metal roller to the base color coating of the aluminum extrusion; and forming a transparent protective film on the printed surface of the aluminum extrusion.

Abstract: Powdered coating compositions and methods for obtaining improved wrinkled finishes with epoxy powder coatings are provided which utilize curing agents other than commercially available methylenedisalicylic acid.

Abstract: A process for producing a polymer which can be used as a powder coating material or a hot-melt adhesive in which at least one polyolefin is subjected to a low-temperature plasma treatment with frequencies changing during the treatment in a frequency range of from 30 kHz to 10 GHz.

Abstract: The invention relates to acoustically active sprayable plastisol compositions based on styrene copolymers and/or alkyl methacrylate homopolymers and/or copolymers of methyl methacrylate which, in addition to the favorable abrasion properties and corrosion-preventing properties of the plastisols, have a good vibration-damping effect and distinctly reduce the noise caused by particle impact (chippings, water, sand).

Abstract: A heat-curable, epoxy-free coating composition comprises a dry blend of at least two different binder resins, each binder resin comprising of (a) a carboxyl-terminated polyester resin having an acid value from 20 to 200 mg KOH/g and a glass transition temperature of at least 40.degree. C., and (b) a .beta.-hydroxylalkylamide with at least two .beta.-hydroxylalkylamide groups per molecule; the at least two different binder resins differing in functionality, or in other words in the number of carboxyl and/or .beta.-hydroxylalkylamide groups per binder resin molecule. Along with the binder resins, the coating composition optionally includes further additives that are typical for the processing and use of powder coatings.

Abstract: A coating powder based on an epoxy resin is applied to a substrate and fused and cured thereon. Curing is effected by exposing the coating powder at the point of application to a fluid curative or cure catalyst, e.g., by exposing the fusing coating powder to an ammonia-containing atmosphere.

Abstract: Fixtures composed of a combination of a metallic core coated with a fused plasticized vinyl chloride coating and an overcoating barrier which shields the coating from atmospheric exposure possess superior resistance against outdoor weathering. The overcoating barrier protectively shields the plasticized vinyl chloride coating from microbiological and sunlight induced degradation. The fixture maintains the compositional integrity and appearance of a freshly manufactured fixture notwithstanding prolonged exposure to normally deteriorative weathering (e.g. bright sunlight, hot and humid) conditions. If desired, the protective barrier may include traction imparting components which prevent slippage and improve upon surface traction. Thermosetting resins and especially the electrostatically applied powders particularly afford effective overcoating barriers for protectively shielding the plasticized vinyl chloride coating from degradation.

Abstract: Thermosetting powder coating compositions adapted to form a grainy textured finish on heat sensitive substrates, especially wood products, such as particle board, conductive particle board, and medium density fiber board, without damaging the substrates comprise an epoxy resin, particularly bisphenol A type epoxy resins having low viscosities, either a catalytic curing agent comprising an imidazole, a substituted imidazole, or adduct of an imidazole or substituted imidazole and an epoxy resin, or a curing agent comprising an adduct of a polyamine and an epoxy resin, or a combination of the catalytic curing agent and curing agent, a texturing agent, a flow control agent, optional extender, and optional pigment. The thermosetting powder coatings have a cure time/temperature ranging from about 30 seconds at about 350.degree. F. peak substrate temperature down to about 20 minutes at about 225.degree. F.

Abstract: A self-locking fastener having a highly localized, substantially splatter-free patch, and an apparatus and method for making such a fastener. The invention finds particular application with very small, internally threaded fasteners, but can be used with a wide variety of other fasteners, as well.