Abstract: Coated pellets are produced by forming pellets having about 20% or more void space, contacting the pellets with a suspension of polymeric particles, reducing the temperature of the particles to create a pressure differential between the voids and the atmosphere to draw in liquid from the suspension and filter polymeric particles on the surface to form a coating.

Abstract: A method is provided for upgrading rock, for example building block, aggregate, preexisting stone structures, portland cement and bituminous concrete structures to render such rock more resistant to degradation resulting from environmental exposure. An organic condensation polymer containing rock treating composition in the form of a solution or dispersion is also provided based on the use of an organic condensation polymer, such as a silicone-arylpolycarbonate block polymer, an organic aliphatic polyamine and an organic solvent, as well as treated aggregate and improved cement and concrete compositions containing such treated aggregate.

Abstract: A process is disclosed for the mixing of relatively small amounts of liquid or liquefied additive with relatively large amounts of solid granular material comprising: forming, in a conduit, a continuous pneumatic- or gravity-borne stream of solid granular material; passing an inert gas stream through a constricting orifice to maintain sonic velocity flow conditions therein; concurrently introducing a stream of said liquid or liquefied additive into said inert gas stream in said constricting orifice under conditions such that combined stream sonic velocity flow conditions are maintained; and introducing the resulting combined liquid or liquefied additive and inert gas streams into said conduit to effect addition of said liquid or liquefied additive to said solid granular material.

Abstract: An inert carrier process for drying radioactive waste material and for incorporating the dry material into a binder from which the dried material will not be leached is disclosed. In this process, a hot inert liquid carrier is provided into which the solution to be dried is introduced under extremely turbulent conditions. The solvent flashes off leaving the dried particles dispersed in the inert carrier which carries these particles to a mixing station where a binder for the particles is injected under turbulent conditions. The binder preferentially wets the particles and the coated particles are carried to a separator section where the binder coated particles coalesce and separate from the carrier as a second phase. Thereafter a curing agent can be added to the binder.

Abstract: A method of forming the chloride of a metal-oxygen-containing substance, including the steps of coating particles of such substance with green carbon, i.e. carbon which contains substances more volatile than carbon, heating the coated particles to drive off the volatile matter and produce openings such as pores and fissures, and then reacting the particles from the step of heating with a source of chlorine.

Abstract: A composition for making polyimide resin-reinforced fibers or fabric. The composition is of the type disclosed in U.S. Pat. No. 3,745,149 and includes a polyfunctional ester, a polyfunctional amine, and an end-capping agent. The composition is impregnated into fibers or fabric and heated to form prepreg material. The tack retention characteristics of this prepreg material are improved by incorporating into the composition a liquid olefinic material compatible with the other ingredients of the composition. The prepreg material is heated at a higher temperature to effect formation of the polyimide resin and the monomeric additive is incorporated in the polyimide polymer structure.

Abstract: Solid constant release composition wherein (a) the solution of soluble core substance within the core space remains saturated during dissolution and (b) the shape and (c) the surface of the coating and (d) the diffusion path for the soluble core substance through the porous coating remains constant while the composition is in a liquid medium, which composition is very useful in media in which constant release during substantially the whole release period is desired, for example, for medical, chemical and fermentation purposes.

Abstract: A pile of a commodity such as coal is coated with a composition which forms a continuous gel thereon whereby water incursion into the pile is prevented. The composition is comprised of a liquid hydrocarbon having a viscosity greater than about 50 centipoises at 75.degree. F. and a minimum boiling point greater than about 500.degree. F. gelled with an alkaline earth metal salt of rosin acid.

Abstract: Plant seeds are coated by applying a coating composition over the entire seed surface, intentionally agglomerating the seeds in a static mass and then breaking up the agglomerated seeds during the time span in which the seeds can be promptly again accumulated without agglomerating and in which said breaking up can be effected without causing the coatings to suffer substantial rupture damage which would occur if said breaking up was delayed closer to the point of final cure of the coating composition. The process is particularly useful in producing seeds coated for purposes of delaying germination.

Abstract: Flaked or plate-like materials that contain silicate were found to be useful as bases for the manufacture of defoaming compositions. Hollow microspheres with largely siliceous surfaces are crushed to form flaked fragments which are rendered hydrophobic by coating with a silane or silicone. The hydrophobized fragments are then dispersed in a water insoluble organic liquid to complete preparation of the defoamer. Especially useful are hollow microsphere fragments containing sodium silicate and a polysalt.

Abstract: Solid particulate waste material is coated with a thermosetting resin which is compressed and cured to form a rigid core. The rigid core is coated with a flexible thermoplastic resin to provide a sealed encapsulated waste agglomerate which can withstand moderate compressive loads.

Abstract: Electrostatographic coated carrier particles for use in the development of electrostatic latent images are provided by mixing carrier core materials with powdered thermoplastic resin particles having a size of between 0.1 micron and about 30 microns. The carrier core materials are mixed with the resin particles until the resin particles mechanically and/or electrostatically adhere to the core materials and the mixture is heated to a temperature of between 320.degree. F. and 650.degree. F. for between 120 minutes and 20 minutes so that the resin particles melt and fuse to the carrier core materials. The coated carrier particles are cooled, classified to the desired particle size, and mixed with finely-divided toner particles to form a developer mixture. The process is especially advantageous for coating carrier particles with resin materials having poor solubility characteristics.

Abstract: Method and means is disclosed for treating carrier particles in order to change the charge to mass ratio and the resistivity of a development powder encompassing such particles. The carrier particles are first coated with a polymer capable of providing reactive sites and then an additional treatment is carried out with a material that will react to the reactive sites. Another advantage of the treatment is that the carrier particles are protected from oxidation following such treatment.

Abstract: Microspheres are produced by cobalt gamma radiation initiated polymerization of a dilute aqueous vinyl pyridine solution. Addition of cross-linking agent provides higher surface area beads. Addition of monomers such as hydroxyethylmethacrylate acrylamide or methacrylamide increases hydrophilic properties and surface area of the beads. High surface area catalytic supports are formed in the presence of controlled pore glass substrate.

Abstract: Open-ended pores of a porous granule are filled with a liquid material which is at least partially immiscible with water, and sealed with a porous polyurea membrane which limits the release rate of the material into the surrounding medium. The membrane is formed by(a) applying to the bare granule an organic solution comprising the liquid material and an organic polyisocyanate, followed by(b) applying to the granule an aqueous solution comprising water and a catalytic amount of a catalyst selected from the group consisting of a basic organic tertiary amine and an alkyl tin carboxylate.

Abstract: Pigment-coated phosphors which may be used in the production of a cathode-ray tube of a high contrast for a color television receiver can be produced by adding a pigment and an anionic polymer emulsion to an aqueous suspension of a phosphor and then making the system neutral or weakly acidic or adding a cationic polymer emulsion or carrying out both of these steps so that the phosphor and the pigment may be coated with the polymer.

Abstract: Particular aqueous gels, epoxy resin compositions and optional additives such as diluents, retarders and accelerators are described which produce a practical composition and method for in situ sand consolidation and gravel packing by which a resin coated sand is positioned in a desired location and cured by an internal catalyst to form a porous permeable or plugged consolidated mass.

Abstract: A polymer suitable for use in affinity chromatography comprising a polymer of an aminimide and a vinyl compound having at least one pendant halo-methyl group and the said polymer wherein an amine ligand which affords sites for binding in affinity chromatography is coupled to the polymer by reaction with a portion of the pendant halo-methyl groups and the remainder of said pendant halo-methyl groups are reacted with an amine containing a pendant hydrophilic group.

Abstract: Thermal insulation of particulate expanded perlite that forms a low density, settle-resistant mass due to the coating of the perlite particles with a material rendering the individual particles slightly tacky.

Abstract: A polymer suitable for use in affinity chromatography comprising a polymer f an aminimide and a vinyl compound having at least one pendant halo-methyl group and the said polymer wherein an amine ligand which affords sites for binding in affinity chromatography is coupled to the polymer by reaction with a portion of the pendant halo-methyl groups and the remainder of said pendant halo-methyl groups are reacted with an amine containing a pendant hydrophilic group. The invention also comprises a method of coating a substrate with the above polymer and a method of fractionating mixtures by affinity chromatography employing the above polymer as an adsorbent.

Abstract: Process for preparing metal phosphide pesticide compositions which hydrolyze to release hydrogen phosphide in which the pesticide is coated with a water soluble polymer.

Abstract: Coated carrier materials are prepared by electrostatically attracting particles of a coating material to the surface of carrier cores and then heating the carrier materials causing the coating material to fuse to the carrier material forming an adherent coating thereon. The coating material is attracted to the carrier materials by (a) rolling carrier materials down an inclined plane while spraying the carrier materials with a coating material; (b) dropping carrier materials through a cloud chamber containing a cloud of coating material particles; and (c) solids blending a mixture of carrier materials and particles of coating material.

Abstract: A pigment-coated phosphor having good finish sieve passability and capable of forming a fluorescent film with excellent properties can be produced from a process characterized by:(1) the first step of adding to a water suspension of a phosphor and a pigment an anionic polymer emulsion which has a minimum film forming temperature of less than 30.degree. C.;(2) the second step of adding a cationic polymer emulsion which has a minimum film forming temperature of 30.degree. C. or lower;(3) the thrid step of adding an anionic polymer emulsion which has a minimum film forming temperature of 30.degree. C. or higher; and(4) the fourth step of making the mixture system neutral or weakly acidic.

Abstract: A process for preparing improved solid lubricants, by modifying the surface characteristics of the solid lubricants using reactive chemical compounds, is disclosed.Prior art measures anticipate combinations of modifiers and solid lubricants as lubricating mixtures but do not disclose bonding modifiers with solid lubricants.Examples of the improved modified solid lubricants are molybdenum disulfide chemically bonded to polystyrene, polymethylmethacrylate or polydimethylsiloxane.

Abstract: The disposition of an array of color phosphor dots on a color cathode ray tube faceplate by conventional photo deposition techniques is facilitated by first coating the individual phosphor particles with polyvinyl alcohol modified with an amino acid such as glutamic or aspartic acid.

Abstract: Particular aqueous gels, epoxy resin compositions and optional additives such as diluents, retarders and accelerators are described which produce a practical composition and method for in situ sand consolidation and gravel packing by which a resin coated sand is positioned in a desired location and cured by an internal catalyst to form a porous permeable or plugged consolidated mass.

Abstract: A lubricant-containing binder for the dry hot coat foundry method comprising a solid resol type phenolic resin and a lubricant in an amount of about 0.5 to 10 percent by weight with respect to said phenolic resin.

Abstract: A method of toner formation wherein a dispersion of magnetic pigment, resin, solvent and surfactant is spray dried to form the toner particles. Two preferred processes are disclosed: (1) A dispersion of magnetite, resin, fatty acid, and solvent is prepared by high speed agitation. The dispersion is then spray dried to form toner particles. (2) A dispersion of magnetite, fatty acid and solvent is subject to reflux heating, followed by addition of resin solution prior to spray drying to form toner particles.

Abstract: A one-component magnetic developer powder for developing an electrostatic latent image formed according to an electrophotographic process comprising non-agglomerative essentially spherical members consisting essentially of plastics binder, magnetic particles and first electric conductive particles dispersed therein, and second electric conductive particles embedded on a spherical surface of the member, the resistivity of the surface layer of the powder being less than that of the inner portion.The developer powder according to the present invention has a good electrical uniformity and the flowability of the developer powder is very good. Productivity of the same is also very good.

Abstract: A process for forming capsules comprising:(i) forming a solution of wall material and core material in a solvent;(ii) admixing said solution with an immiscible liquid to form a dispersion wherein said solution is the dispersed phase and the immiscible liquid is the continuous phase;(iii) altering the solubility characteristics of the solvent for said solution to effect sequential phase separation of said core and wall materials, respectively, thereby forming capsules of core material encapsulated with wall material; and(iv) recovering said capsules.

Abstract: An anticaking composition suitable for fertilizers comprising a hydrophobic liquid having dissolved therein from 0.01 to 20% by weight of an alkylaryl sulphonate derived from an alkylaryl sulphonic acid of molecular weight greater than 400.Also covered are fertilizer granules, e.g. NPK fertilizers coated with this anticaking composition.

Abstract: An improved record member is disclosed of the type having a sensitized surface including an oil soluble acid-reactant organic polymer and a colorless acid type mineral such as kaolin clay. Sensitized surfaces of the foregoing type develop distinctive colors when contacted with a normally colorless oil solution containing two chromogenic materials which react, respectively in different time sequence, with the polymer and acid mineral. In the improved member kaolin particles are encapsulated within the said polymer material, whereby said sensitized surface possesses better and more uniform marking qualities. A method for preparation of the coating composition utilized in the member is also set forth.

Abstract: A modified phenol formaldehyde condensate is reacted with boric acid and cured in the presence of a polyfunctional nitrogeneous compound to provide a binder for mineral wool fibers which is particularly suited for thermal insulation products intended for high temperature service.

Abstract: A silicone emulsion for treating silicate particulate matter such as perlite and vermiculite, to make it water-resistant comprising a silicone fluid composed of difunctional siloxy units, trifunctional siloxy units and monofunctional siloxy units and as the emulsifier in water there is the reaction product of an aliphatic carboxylic acid with ammonia. The silicone emulsion is applied by spraying it on to the heated silicate particulate matter which is preferably heated to at least 150.degree. C., such that the silicone fluid rapidly cures on the particulate matter.

Abstract: Microspheres, prepared by the low-temperature e.g., -40.degree. to -100.degree. C., phase separation of a polymer and a core material.

Abstract: Polyester aminoalkylalkoxysilanes are provided by effecting the Michael addition reaction of an unsaturated conjugated polyester having a molecular weight of at least 1000 with an aminoalkylalkoxysilane. The said polyester aminoalkylalkoxysilanes have utility as adhesion promoters between inorganic siliceous materials and organic resins. When the inorganic siliceous material is glass cloth or fibers, the polyester aminoalkylalkoxysilanes have dual utility as (a) a size or protective coating for glass cloth or fibers and (b) an adhesion promoter between said glass cloth or fibers and said organic resins. Also provided are polyester aminoalkylalkoxysilanes that are formed by the linear chain-extension of an unsaturated conjugated polyester with an organic diisocyanate prior to the Michael addition of an aminoalkylalkoxysilane.

Abstract: A polymer suitable for use in affinity chromatography comprising a polymer f an aminimide and a vinyl compound having at least one pendant halo-methyl group and the said polymer wherein an amine ligand which affords sites for binding in affinity chromatography is coupled to the polymer by reaction with a portion of the pendant halo-methyl groups and the remainder of said pendant halo-methyl groups are reacted with an amine containing a pendant hydrophilic group.The invention also comprises a method of coating a substrate with the above polymer and a method of fractionating mixtures by affinity chromatography employing the above polymer as an adsorbent.

Abstract: A method for coloring inorganic substrates such as glass beads, glass fibers, mineral wool, rock wool, mineral fiber boards and cloths, concrete molded materials, inorganic pigments and metallic powders, which comprises treating the inorganic substrate with (1) a cationic component comprising(a) a water soluble cationic resin or an aqueous solution of a water soluble cationic resin,(b) an aqueous solution of a water soluble cationic resin and a water soluble cationic dye, or(c) an aqueous dispersion of a water soluble cationic resin, a cationic dispersing agent plus a water insoluble dye or pigment and, optionally, a cationic water soluble dye; andWith (2) an anionic component comprising(d) an aqueous solution of a water soluble anionic dye,(e) an anionic dispersing agent or an aqueous solution of an anionic dispersing agent,(f) an aqueous solution of an anionic dispersing agent and a water soluble anionic dye, or(g) an aqueous dispersion of an anionic dispersing agent plus a water insoluble dye or pigment an

Abstract: A method of coating pigment particles such as magnetite with a derivative of a maleic anhydride. The magnetite pigments coated by this process are found to be particularly suitable for use in formation of magnetic toners that will both develop inductively and transfer electrostatically.

Abstract: Hydrophilic fibers may be prepared by discharging a heated and pressurized dispersion of a styrene-maleic anhydride copolymer into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.

Abstract: The present invention relates to a method of producing a mouldable material having a high content of a crystallizable glass made in a rotary kiln in a highly bubble-containing form, and grinding the glass in a ball mill.

Abstract: Hydrophilic polyolefin fibers may be prepared, for example, by discharging a heated and pressurized solution of an anionic polyolefin composition containing carboxylic functionality into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.

Abstract: Hydrophilic fibers may be prepared by discharging a heated and pressurized dispersion of a styrene-maleic anhydride copolymer into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.

Abstract: Hydrophilic polyolefin fibers may be prepared, for example, by discharging a heated and pressurized solution of an anionic polyolefin composition containing carboxylic functionality into a zone of reduced temperature and pressure, and then modifying the fibers so produced by treatment with an aqueous admixture of selected cationic and anionic water-soluble, nitrogen-containing polymers. Blends of the hydrophilic fibers with wood pulp provide paper products having improved physical properties.

Abstract: A solid preparation from which a reconstituted emulsion bright-drying optionally rebuffable floor finish containing emulsion polymer, alkali-dispersible wax and optionally an alkali-soluble resin in dry particulate form which may be obtained by dehydration of an aqueous dispersion of the emulsion polymer, the wax and optionally the alkali-soluble resin at a temperature below the minimum film-forming temperature of the composition.

Abstract: A method of toner formation utilizing bead polymerization to produce colored particles which may be directly attrited to toner.

Abstract: The dust fraction of expanded perlite is bonded to the larger sized grains by spraying finely atomized paraffin at a temperature of less than 130.degree. C. upon the perlite which has been cooled to a temperature of less than 130.degree. C. In a second embodiment of the invention, the perlite is treated with a water repellent process prior to the paraffin treatment.

Abstract: A carrier bead is disclosed having a core and at least an outer coating of polytetrafluoroethylene or fluorinated ethylene propylene. Use of these fluoropolymers as carrier coatings results in extremely long carrier life and overcomes problems that have heretofore plagued the commercialization of a magnetic brush development system for a plain paper electrostatic copying apparatus.

Abstract: Bleaching compositions containing coated or encapsulated bleaching agents, methods for employing these coated agents, as well as methods for preparing these encapsulates are disclosed. These compositions and methods are utilized to effectively bleach colored fabrics and textiles in both hot and cold water with minimal pinpoint damage to the fabric colors. The encapsulates have excellent storage properties and release of the active component at both hot and cold temperatures.

Abstract: Novel pressure fixable direct imaging magnetic toners having a core of magnetic material held together with an adhesive resin, a barrier substantially covering the core, an overcoat of thermoplastic strengthening resin, and an outer conductive layer, together with novel processes for producing such toners, these processes comprising dispersion of the core material followed by agglomeration of the several layers in a single aqueous medium.