Abstract: A novel, improved process for forming a thin, adherent coating of a perfluorocarbon ionomer on a polymeric substrate which is typically in powdered form, fibrous form, or a mixture of powdered and fibrous forms, from a colloidal dispersion of the perfluorocarbon ionomer in a liquid medium which consists essentially of water and is substantially free of organic solvents, comprising adding a) the colloidal dispersion and b) a salt or a strongly ionizing acid to a vessel containing the polymeric substrate, and subjecting the dispersion, salt or acid and polymeric material to high shear conditions whereby a thin, durable coating of the perfluorocarbon ionomer is formed on the polymeric substrate.

Abstract: A plurality of petri dishes or other glass or plastic containers are coated on the inside bottom surface of the containers by passing the containers through a coating or layering apparatus. The apparatus includes an indexing conveyor to sequentially pass the open containers through a filling station where an amount of a coating material is applied while tilting the container to one side thereby distributing the material to the entire bottom surface of the container. The containers are conveyed to an aspirating station to aspirate excess material while tilting the container toward the aspirating nozzle. Subsequent to the aspiration step, the containers are tilted in the opposite direction to distribute the material in the container. The material is then dried and the containers stacked and packaged. The coating material includes metal ions such as calcium or other divalent metal ions, in a suitable carrier that is able to bond the bottom inside surface of the container.

Abstract: A polymeric resin composition comprising a polymeric resin in particulate form coated with an additive agent adhered to the surfaces of the resin particles by a coating of thermoplastic adhesive binder between the particles and the agent.

Abstract: By utilizing the process of the present invention, a free-flowing crumb rubber composition can be easily prepared on a commercial scale. This invention more specifically discloses a process for preparing a free-flowing crumb rubber composition which comprises the steps of:(1) adding a wax emulsion to a latex of a rubbery polymer to produce a latex which contains the wax, wherein the wax has a melting point which is within the range of about 40.degree. C. to about 175.degree. C.;(2) agitating the latex which contains the wax in a manner whereby the wax is distributed throughout the latex;(3) coagulating the latex which contains the wax to produce a slurry of wax coated crumb rubber in water;(4) recovering the wax-coated crumb rubber from the water in the slurry; and(5) drying the wax-coated rubbery polymer in a hot air medium under forced motion to produce the free-flowing crumb rubber composition, wherein the hot air medium is at a temperature which is within the range of about 20.degree. C. to about 99.

Abstract: A method of making a pharmaceutical composition is disclosed. The method includes the steps of contacting at least one pharmaceutical ingredient with a mixture consisting essentially of gelatin and lecithin to increase the dissolution rate of water-insoluble pharmaceutical ingredients. A pharmaceutical excipient coating for increasing the dissolution rate of water-insoluble pharmaceutical ingredients is also disclosed. The coating consists essentially of gelatin and lecithin.

Abstract: A carrier comprised of a core with a coating thereover comprised of at least one polymer resin and wherein the outer surface of the coated carrier is fibrillated.

Abstract: A method of preparing a carrier for a blood treatment apparatus includes the steps of dipping a carrier containing about 10 to about 100 parts by weight of a plasticizer with respect to 100 parts by weight of thermoplastic resin in a solvent dissolving only the plasticizer without dissolving the thermoplastic resin thereby extracting the plasticizer, thereafter dipping the carrier in an aqueous solution of about pH 5 to about pH 9, and then drying the same to retain the solute of the aqueous solution in the pores of the resin.

Abstract: Described is a support for electrodes of primary or secondary electric cells, said support comprising an open-mesh, three-dimensional network structure composed of plastics threads coated unbrokenly with one or more efficiently conducting, thin metal coats and, to form the three-dimensional structure, being provided with humplike depressions and/or elevations which are distributed over its surface and in whose region the distance between the plastics threads is increased, wherein at least the outer metal coat of the plastics threads consists of a valve metal. Also described are electrodes comprising such a support and a process for producing the articles mentioned.

Abstract: Disclosed are colored, shaping thermoplastic resin pellets prepared by mixing shaping thermoplastic resin pellets of polyethylene, polypropylene, polystyrene, ABS resin, etc., a powdery colorant and a liquid thermoplastic adhesive of ethylene-vinyl acetate copolymer, nylon, water-soluble acrylic polymer, etc. having a water content of 5% by weight or more followed by drying the resulting mixture whereby said powdery adhesive is made adhered onto the surfaces of said pellets. The colored pellets are prepared, using minimized equipments and running costs necessary for melting and granulating steps. When mixing the powdery colorant and the uncolored shaping thermoplastic resin pellets, static electricity is not generated. The invention is free from troubles to be caused by antistatic agents and organic solvents, not needing them.

Abstract: A method of fabricating artificial pearls by repeatedly dipping glass or plastic ball elements in a dye liquor and then heat-drying the dip-dyed ball elements at 50.degree.-60.degree. C. for about 15-20 minutes. The dye liquor contains 59 wt %-66 wt % ethyl solvent, 12 wt % acetone, 16.5 wt % cellulose acetate butyrate, 4.4 wt % pearl pigment, 0.55 wt % dye of desired base color, and 0.55 wt % essence.

Abstract: Magnetically responsive microparticles and a method for their production are described. Oppositely charged core particles and magnetite are heterocoagulated, redispersed and optionally coated. The microparticles are colloidally stable and have negligible retentivity.Having now fully described the invention, it will be apparent to one of ordinary skill in the art that many changes and modifications can be made thereto without departing from the spirit or scope of the invention as set forth herein.

Abstract: A method of bonding various materials, such as foam materials, to thermoplastic resins using a silane composition is provided. The thermoplastic resin is doped with a silane by washing the thermoplastic resin in a silane solution and then evaporating the solution from the resin. The silane-doped thermoplastic resin is then melted and formed into a polymeric article. In one embodiment, a polyurethane foam can then be sprayed onto the polymeric article. As the foam forms on the surface of the article, it bonds with silane trapped within the thermoplastic resin. In one embodiment, the polymeric article can be formed through a rotational molding technique. Through the process of the present invention, many useful articles can be formed such as polymeric pallets, water craft devices, thermocoolers and the like.

Abstract: A method for coating pharmaceutical tablets is disclosed in which polymeric coating ingredients are combined with saccharides in a melt spinning operation to form composite particulates. The particulates are then dispersed in water to form an aqueous polymer coating solution, followed by application to pharmaceutical tablets by such methods as spray coating. The particulates dissolve extremely rapidly in water to form a dispersion of the polymer coating ingredients. Such rapid dissolution allows for increased processing rates and avoids disadvantages of the prior art such as the requirement of high shear rate mixing for long times.

Abstract: Disclosed are chemically-produced specific binding, "molecular imaged" sorbents which reversibly bind a preselected macromolecule by spatially matched multipoint interactions between functional groups synthesized on the surface of the sorbent and functional groups on the surface of the macromolecule. Also disclosed are methods of producing such sorbents. The sorbents typically are high surface area solids comprising surface binding regions which have charged groups, metal coordinating groups, hydrophobic moieties, or various combination thereof anchored thereto and spaced in the mirror image of complementary interactive groups on a surface of the macromolecule.

Abstract: A method of preparing and coating cylindrical bore surfaces of an aluminum workpiece that comprises (a) inserting and rotationally reciprocally moving a plurality of honing elements against the bore surface with a pressure of at least 30 psi to effect a pattern of spiral overlapping abrasions on said surface, each element being constituted of multifaceted, irregular-shaped, abrasive particles (i.e., diamond or SiC) having a particle size of 30-1300 micrometers. The particles, when in contact with the surface, plow micro-sized, non-smooth and irregularly spaced grooves in the aluminum workpiece resulting in spiral peaks and valleys along the direction of movement of the particles, whereupon repeated reciprocation and rotation of the elements (i.e.

Abstract: Microsphere beads are mixed with a surface barrier liquid or mixture of such a liquid with a solid effective to prevent agglomeration and surface bonding of the microspheres; by the control of the application of heat and balancing temperature and active mixing, removal of water from the microspheres is achieved.The surface barrier liquid or mixture of such a liquid with a solid in the present invention is any one of a wide diversity of materials which meet the requirements of the intended function, i.e., to prevent the agglomeration of the microspheres during the process. Suitable materials include, by way of example, plasticizers, diluents, extenders, monomers and oligomers, and the like.

Abstract: Nanoparticle metal powder having a controllable and narrow size distribution are by electrolessly plating a metal on the interior of a vesicle made of at least one polymerized phospholipid. Electroless plating may be accomplished by catalytic reduction of the metal ion or u.v. reduction of the metal ion.

Abstract: A composition comprising: (1) a susceptor of magnetically coupled radio frequency energy comprising a non-magnetic particulate substrate, e.g., an electrically insulative material in particulate form, bearing a thin magnetic coating, e.g., a magnetic inorganic film, and (2) a matrix that is substantially non-reflective of radio frequency energy, e.g., silicone rubber, which matrix can be heated upon the composition's being subjected to magnetically coupled radio frequency energy. It has been discovered that thin magnetic coatings on non-magnetic particles provide energy transfer with induction heaters equal to or better than many commonly used solid susceptor particles. It has also been discovered that the temperature of the composition of this invention can be regulated so as not to exceed a predetermined temperature.

Abstract: A bone cement composition has adjustable rheological properties, high strength, and produces a uniform radiological image. The cement is characterized by controlled retention and release of additives incorporated in beads included in the dry component of the cement. The cement comprises beads containing a polymerization initiator in controllable concentrations from 0% to 5% or more by weight. These same beads or others may also contain an opacifier. The polymerization initiator and the opacifier may be selectively distributed throughout the beads or at specific radial locations in the beads. They may also be selectively placed in beads of a particular advantageous size range. Furthermore, in other embodiments of the invention, other advantageous additives can be incorporated in the beads such as dyes, antibiotics, bone growth factors, and other pharmacological or therapeutic agents.

Abstract: The invention is a method for making a metal containing article, comprising the steps of: providing a layer of a porous ground in a selected area; exposing selected regions of the layer of porous ground to light, thereby metallizing the selected regions; repeating the foregoing steps a selected number of times to produce a selected number of layers; and selectively modifying the metallized regions of the layers. The initial metallization can be by electroless or semiconductor photo deposition plating. The subsequent modification of the metallized regions can be by electroless plating, electroplating or sintering. It is also possible, in some instances, to forego the second phase modification, the initial phase having provided the desired parameters. In a third preferred embodiment, the invention is a method using an initial metallization phase effected by exposure of a metal salt, such as a metal halide, to light, thereby inducing activation of the halide.

Abstract: An apparatus for dipping tablets into gelatin coating material and for spreading and setting the coating immediately after dipping is provided. Carrier plates having a plurality of tablet holders are transported from a tablet loading station to a dipping station along a transport guide. At the dipping station, a carrier plate is mounted to a vacuum chamber. A set of vacuum tubes in the vacuum chamber are extended through the tablet holders to contact and lift the tablets off of the holders and secure the tablets to the tubes. In a preferred embodiment, the vacuum chamber is rotated 180.degree. and a second carrier plate is mounted onto the housing and a second set of tubes secure the tablets to the plate. The carrier plates are alternately dipped and returned to the transport guide where new plates with uncoated tablets replace the plates with coated tablets. Immediately after dipping the carrier plates enter a rotating station where the plate is rotated 360.degree.

Abstract: Disclosed are powders containing silica precursors having metals deposited on their surface. The powders are produced by vacuum evaporation of the metal onto the surface of the powder. These powders are useful for forming colloidal dispersion, gels and ceramics with metals dispersed therein.

Abstract: The present invention includes a first coating section, a second coating section and a device for transferring products from the first to the second sections. The first section includes a feeding and loading station for depositing products onto product holders retained in product carrier plates. The products are advanced to a first dipping station in the first section to coat a first portion of the product. The plates are then advanced to a first rotating station in the first station and rotated at least one revolution for spreading the coating over that first portion. The plates are then advanced to a dryer that extends over the first section of the coating apparatus and the coating is dried. The transfer device transfers the products to the second section of the coating apparatus in such a manner to expose the uncoated portion of the products. The plates are then advanced to identical dipping and rotating stations and dryer as in the first section.

Abstract: With the method of processing liquids, fine to very fine organic and/or inorganic granular particles are used, whereby pursuant to the invention the particles are mixed and compressed together in a first step to form an agglomerate that is heated at least to a temperature that is near the melting point thereof. The particles are thereby fixed in place by being subjected to a process similar to sintering for a suitable length of time, whereupon the resulting agglomerate is screened, or reduced in size in a grinder, to a granular size that is suitable for an intended use. This enables stabilizing and filtering aids to be produced with predetermined or predictable physical or chemical properties that are suitable for specific processes.

Abstract: A method of coating a substrate, for example, to abate asbestos or lead paint by encasement, includes dispersing particulate solids in at least one liquid thermosetting resin, about 100% of said solids having a U.S. Standard mesh size of about 225 mesh or smaller and at least about 10% of said solids having a U.S. Standard mesh size of about 325 mesh or smaller; dispersing an effective amount of at least one catalyst in said resin to cure said resin within a determined period of time, the resulting mixture being a curable resin system; and spraying said curable resin system on to said substrate using an airless spray system. A product made by such method and an article comprised of such a coating.

Abstract: A tamper-resistant dosage form capsule for the oral administration of therapeutic agents comprises a two-part capsule which is shrunk around a caplet so that the outer wall of the caplet is bound to the inner walls of both parts of the capsule. The caplet is placed into the capsule, and the dosage form is then subjected to relatively high humidity and temperature conditions, followed by drying the dosage form in a lower humidity environment, so that the capsule is shrunk to conform to the contours of the caplet and both parts of the capsule are bonded to the caplet.

Abstract: Apparatus and method for coating products with two colors including a first coating section, a second coating section and a side to side transfer device for transferring products from the first to the second sections. The transfer device includes a pair of plate grippers each having a movable upper jaw and a movable lower jaw. The upper and lower jaws are each adapted to receive and retain a product carrier plate. The transfer device includes a cam follower that precisely closes the upper and lower jaws so that carrier plates located in the jaws are positioned in registration with each other in order to clamp product between the plates and to maintain the product clamped in the plates while the grippers are transferred between the first and second conveyor guides. An unloading station includes breaker pins for breaking a seal that may be formed between the coating material applied in the first coating section and the carrier plates.

Abstract: A sintered composite comprises capsule-like powder composite particles composed of core particles and an electrically conductive covering material which covers said core particles. The capsule-like powder composite particles are sintered in a sintering mold while pulsed voltages are being applied to the powder composite particles.

Abstract: The invention pertains to a process for preparing a phenylalanine-free dietetic product comprising L-amino acids, and optionally comprising carbohydrates, minerals, trace elements and/or vitamins, for persons afflicted with phenylketonuria particularly adults, juveniles and pregnant women. The process comprises preparing a wet batch by dispersing in water the L-amino acids, some or all of the optional components, and at least one fatty material as an emulsifier, after which the wet batch is spray-dried. The spray-dried wet batch is then mixed with additional vitamins and/or carbohydrates and at least one fatty material as a separation agent to produce a mass. The mass thus produced is processed into cores for dragees or tablets, and the dragee or tablet cores are provided with coatings or dragee covers. The dietetic product is used as a nutrition supplement.

Abstract: A process for forming a coating on a surface of a textile fiber, comprising subjecting the fiber surface to first and second process phases while passing the fiber through a reaction medium comprising a cold flowing plasma containing an active species, the first phase including treating the fiber surface in order to increase its adhesive properties, and the second phase including introducing a polymerizable material comprising at least one of a prepolymer and a monomer into the cold flowing plasma in the presence of the fiber under conditions sufficient to induce the formation of a polymerized coating on the fiber surface, polymerization being induced by the active species.

Abstract: The invention relates to a process for producing organized powders. The powder comprises a set of core particles and a set of satellite particles. To form the organized powders, a substantially homogenous dispersion of each set is made in a dispersing liquid; the resultant dispersion is then sprayed in suitable conditions to form the organized powder. The organized powders obtained are characterized by a very uniform covering of the core particles regardless of their shape.

Abstract: Described is a method of rendering antistatic and/or rendering flame-resistant and/or coloring polyolefin particle foams, in which polyolefin particles are wetted with an organic liquid, a powder composition which contains a flame-proofing agent, an antistatic agent and/or a coloring agent as well as a film-forming agent is added with mixing and the resulting mixture is sintered in per se known manner.

Abstract: Particulate water-soluble or water-swellable polymeric material is provided with a substantially uninterrupted continuous coating of crystalline material. Single particles or aggregates having a size below 1 mm in size can be made by mixing the polymeric particles with a substantially saturated or supersaturated aqueous solution of crystallizable material (optionally a melt of hydrate crystallizable material) and thereby depositing it as a continuous crystalline coating on the particles.

Abstract: The disclosure relates to a method of forming magnetic materials having tunable magnetic properties and the magnetic materials formed thereby. The magnetic materials contain both single-domain and multidomain particles and have high initial permeability while maintaining coercivity and remanence in the material.

Abstract: An expandable aqueous coating composition includes a polymeric binder including latex particles wherein the latex particles include a copolymer having a glass transition temperature of about -20.degree. C. to about +60.degree. C. and a weight average molecular weight of about 20,000 to about 500,000 and including expandable particles having a liquid blowing agent contained within a thermoplastic shell.

Abstract: A bone cement composition has adjustable rheological properties, high strength, and produces a uniform radiological image. The cement comprises beads containing a polymerization initiator in controllable concentrations from 0% to 5% or more by weight. These same beads or others may also contain an opacifier. The polymerization initiator and the opacifier may be selectively distributed throughout the beads or at specific radial locations in the beads or within the beads in specific strata. They may also be selectively placed in beads of a particular advantageous size range. Furthermore, in other embodiments of the invention, other advantageous additives can be incorporated in the beads such as dyes, antibiotics, bone growth factors, and other pharmacological or therapeutic agents.

Abstract: Aqueous application systems for applying additives to polymeric particles, methods of preparing aqueous emulsions which include at least one processing, stabilizing or other functional polymer additive and an emulsifiable wax. Also disclosed are methods of applying additives to polymeric particles and to polymeric particles treated by such methods.

Abstract: Adhesive beads comprise a core comprising a pressure sensitive adhesive material and an essentially discontinuous organic polymer disposed about the core. The beads are free-flowing at room temperature. Upon application of heat and/or pressure the core is activated and blends with the coating to provide a pressure sensitive adhesive.

Abstract: An immunoassay method using magnetic particles comprising a core and a coating layer on the surface thereof, The core comprises an organic polymer and the coating layer comprises an iron oxide type ferrite coating layer. An antigen or an antibody is bound onto the surface of the coating layer and the particle has a particle size of 0.2 to 3 .mu.m.

Abstract: Spherical particles include a core of a polymer and a metal compound covering the polymer core. These particles may be formed by homogeneously dispersing particles of a polymeric compound in an aqueous solution of a hydrolyzable metal salt to form a uniform metal layer around the spherical particles. The spherical particles can also include a core of carbon and a metal compound covering the carbon core or the particles can have a hollow core prepared by heating spherical polymer particles coated with a metal compound to a temperature of 150.degree. C. or higher in the presence of oxygen to completely decompose the polymeric compound. These spherical particles are useful in electronic materials, magnetic materials and the like.

Abstract: A metal-coated particle is prepared by providing a disintegrator apparatus with a working chamber containing counter-rotating disks equipped with teeth design to accelerate particles towards one another, providing a first material and a second metal as powders, such that the first material is harder than the second metal and introducing the first material and second metal powders into the working chamber of the disintegrator apparatus, whereby the soft second metal collides with the hard material and is coated onto the surface of the hard first material. A metal-coated metal with an intermetallic interface is prepared by introducing a first material and a second metal as powders into a disintegrator working chamber containing counter-rotating disks and teeth designed to accelerate particles towards one another. The first material harder than the second metal and is capable of reacting with the second metal to form an intermetallic compound.

Abstract: In producing an additive for a building material, lightweight granules (e.g., polystyrene beads) are first coated with a waterproof adhesive by mixing in a suitable mixer. When the granules are satisfactorily coated, they are further coated with a wet cementitious material, for example aggregate and wet cement, or with wet plaster, which is added to the mixture. Only sufficient moisture is added to allow the cement or plaster to initiate the chemical reaction which results in the curing of the coating material on the granules. The wet material acts to separate the granules while forming a coating thereon. The granules are then removed from the mixture and allowed to dry and set. The dry granules may then be added to a conventional concrete or plaster mix.

Abstract: A process for applying a polymer additive material to a polymeric substrate includes the steps of a) forming in a closed pressurized system a mixture of a solid polymer additive material, a suitable liquid carrier material, and a suitable viscosity reducing material, and b) spraying this mixture onto a polymeric substrate.

Abstract: A process for coating solid particles in powder form with a material which is solid or of high viscosity at room temperature. A device for carrying out the process comprises a housing (1) with a conical surface (16) and a rotor (7) mounted in the housing and provided with a conical surface (9). The housing has an inlet (20) through which a melt of the solid material can be supplied to a gap between the conical surfaces of the housing and the rotor and an inlet (12) for supplying powder material to the top surface (8a) of the rotor. As the rotor rotates, a film is formed on the conical surface of the housing and at the same time powder is slung, with the aid of vanes (10) on the rotor against the film. The material is worked and pressed out through an outlet (30) by wings (11) on the rotor.

Abstract: This invention relates to a continuous process for incorporating additives into or onto polymer granules by high speed/high intensity mixing of entrained polymer granules and additive particles, wherein the additive is provided in the form of an additive dispersion.

Abstract: The invention relates to an expandable styrene polymer, comprising(a) a styrene polymer,(b) from 1 to 10% by weight, based on (a), of a blowing agent or blowing agent mixture,(c) from 0.02 to 0.25% by weight, based on (a), of a first coating containing a coating composition comprising(c.sub.1) a bisamide made from a C.sub.2 -C.sub.8 -alkylenediamine and an aliphatic C.sub.6 -C.sub.20 -carboxylic acid and(c.sub.2) a conventional antistatic,in a (c.sub.1):(C.sub.2) weight ratio of from 1 to 50,and, if desired, further coating compositions or coating composition mixtures and conventional additives in effective amounts, and to a process for the preparation of screen fractions of bead-form, expandable styrene polymers prepared by suspension polymerization.

Abstract: Surfaces of fine polystyrene (PS) and polymethyl methacrylate (PMMA) powders were modified by exposure to the downstream products of a nitrogen or oxygen microwave plasma. The effects of nitrogen and indium incorporation in the powder surface were studied with emphasis on variations in the triboelectric properties of the powder. X-ray photoelectron spectroscopy (XPS) was utilized to determine the changes in surface elemental composition. After nitrogen plasma treatment, the C 1s peak profiles suggested the formation of amines in the case of PS, and the formation of imines and amides in the case of PMMA. Oxygen plasma treatment suggested the formation of hydroxyl and carbonyl groups on the surfaces of both PS and PMMA. After treatment with a nitrogen or oxygen plasma, the charge-to-mass ratio (Q/M) of PS and PMMA powders in contact with carrier particles was measured using the cage blowoff method. The surface charge density (Q/A) was calculated from Q/M.

Abstract: This invention provides a novel process of producing magnetically responsive fluorescent polymer particles comprising polymeric core particles coated evenly with a layer of polymer containing magnetically responsive metal oxide. A wide variety of polymeric particles with sizes ranging from 1 to 100 microns can be used a core particles and transformed into magnetically responsive polymer particles. The surface of these magnetically responsive polymer particles can be coated further with another layer of functionalized polymer. These magnetically responsive fluorescent polymer particles can be used for passive or covalent coupling of biological material such as antigens, antibodies, enzymes or DNA/RNA hybridization and used as solid phase for various types of immunoassays, DNA/RNA hybridization probes assays, affinity purification, cell separation and other medical, diagnostic, and industrial applications.

Abstract: This invention relates to a process for forming polyaniline films or coatings on a substrate and to composite articles formed by said process.

Abstract: Gel coating of thermoplastic particles, such as polyimide particles, with a polyketone or polyvinyl alcohol gel, and applying the gel coated particles to reinforcement, e.g. carbon, fibers to form a pre-preg. Such gel coated thermoplastic particles can be mixed with a thermosetting resin to form a pre-preg, which can be cured at elevated temperatures to form a composite having damage tolerance characteristics. The gel coating is applied to the thermoplastic particles by contacting such particles with a polymerizable material such as acetone in a weakly acidic solution to cause the acetone to undergo tautomerism, and in the presence of a polymerization promoter or catalyst, preferably certain anionic surfactants such as sulfated ammonium salts, to convert the tautomer to polyacetone gel of low molecular weight, which coats or encapsulates the thermoplastic particles.