Abstract: Water soluble macromers are modified by addition of free radical polymerizable groups, such as those containing a carbon-carbon double or triple bond, which can be polymerized under mild conditions to encapsulate tissues, cells, or biologically active materials. The polymeric materials are particularly useful as tissue adhesives, coatings for tissue lumens including blood vessels, coatings for cells such as islets of Langerhans, coatings, plugs, supports or substrates for contact with biological materials such as the body, and as drug delivery devices for biologically active molecules.

Abstract: A method for enhancing solid, nonionic surfactant aqueous dissolution rates by spray-coating from about 1 to less than 70 weight percent of diammonium sulfate with the surfactants and the compositions produced thereby.

Abstract: An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.

Abstract: The cutting of attachment threads in a carbon-carbon billet is improved by coating the portion to be threaded with an epoxy resin, and at least partially curing the resin prior to cutting the threads.

Abstract: A process for producing a powdery ammonium polyphosphate which is uniformly coated with melamine is provided wherein melamine is sublimated and added and/or adhered onto the particle surface of a powdery ammonium polyphosphate.

Abstract: A method for preparing a carrier for developing an electrostatic charge image, wherein the carrier comprises core particles each having thereon a resin coated layer, and a volume base average particle diameter D50 of the core particles is within the range of 40 to 80 .mu.m, and 5 wt % or less of the core particles have a volume base average particle diameter D50.times.1.2 .mu.m or more and 5 wt % or less of the core particles have a volume base average particle diameter D50.times.0.7 .mu.m or less, comprising the steps of forming a mixture of the core particles and coagulated resin particles; applying an impact force repeatedly to said mixture to coat said coagulated resin particles on said core particles; wherein a volume base average particle diameter D50 of the coagulated resin particles is within the range of 0.5 to 20 .mu.

Abstract: Doped encapsulated semiconductor nanoparticles of a size (<100 .ANG.) which exhibit quantum effects. The nanoparticles are precipitated and coated with a surfactant by precipitation in an organometallic reaction. The luminescence of the particles may be increased by a further UV curing step.

Abstract: Pharmacologically inactive spherical seed cores comprising at least 50% by weight of microcrystalline cellulose having an average degree of polymerization of 60 to 375, wherein the spherical seed cores have an average particle size of 100 to 1000 .mu.m, a tapped bulk density of at least 0.65 g/ml, an aspect ratio of at least 0.7, a water absorption capacity of 0.5 to 1.5 ml/g, and a friability of no more than 1%; spherical granules comprising the spherical seed cores coated with a powdery layer comprising active ingredients and having an outer layer of coating provided on the powdery layer; and a process for the production of spherical granules, comprising the steps of coating the spherical seed cores with powder comprising active ingredients using an aqueous binding solution, spraying an aqueous solution or suspension of a coating agent thereon, and drying the resulting coated granules.

Abstract: Disclosed are hydrophilic coatings covalently bound to hydrophobic surfaces as well as methods for their production. To form the coated surfaces, a compound is provided which comprises a hydrophobic domain including an unsaturated group and a hydrophilic domain. Also provided is a hydrophobic surface comprising unsaturated groups. Molecules of the compound are adsorbed onto the hydrophobic surface, and the unsaturated groups in the hydrophobic domains of molecules of the compound then are covalently crosslinked to the unsaturated groups on the hydrophobic surface by a free radical reaction. In one embodiment, hydrophilic coatings may be covalently attached to hydrophobic polymers such as divinylbenzene crosslinked polystyrene. Hydrophilic coatings covalently attached to hydrophobic surfaces are obtained which are stable, which may be readily derivatized, and which are useful in a wide range of chromatography applications.

Abstract: Disclosed are a method of coating a granular material comprising steps of: dropping a granular material from an upper portion in a draft disposed in a coating apparatus; spraying the granular material during falling with a coating solution containing a film-forming material dissolved in a solvent in the draft; drying the granular material sprayed with the coating solution by a drying gas flowing upwardly from a lower portion to an upper portion in the draft; and carrying the dropped granular material to an upper portion in the coating apparatus, and a coating apparatus for coating a surface of a granular material with a coating solution while dropping the granular material, comprising a guide for guiding the granular material, coating solution spray nozzles disposed inside a draft and a means for supplying a drying gas upwardly from a lower portion to an upper portion to the granular material falling in the draft.

Abstract: A water-repellent earth material having grains formed with silicone coating is made by mixing the earth material with an emulsion of silicone oil in water and drying. The earth material may be selected from the group consisting of soil, sand, gravel, pebbles, silicon-containing combustion ash of household refuses and silicon-containing combustion ash of industrial refuses. The earth material may be used to form a water-repellent ground surface layer, a water-repellant underground layer or a water-repellent enclosure for various purposes.

Abstract: A process for the preparation of conductive, electronegative, submicron polymeric particles comprised of a first polymer optionally containing from about 1 to about 50 percent by weight of a conductive filler and a second electronegative, contrast polymer, and wherein said conductive polymer particles with optional filler are prepared by mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 5 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.

Abstract: For providing a molded catalyst or a supported catalyst which has an excellent mechanical strength and is intended for producing methacrolein and methacrylic acid from isobutylene or tertiary butanol, the surface of a molded catalyst or a supported catalyst which contains molybdenum, bismuth and iron is coated with one or more highly depolymerizable organic high-molecular weight compounds.When used, the catalyst is packed into a reactor and then heated to remove the organic high-molecular weight compound(s) by depolymerization.

Abstract: A fiber preform constituting the fiber reinforcement of the part to be made is itself made by shaping and consolidating a fiber fabric by a liquid process. An interphase layer between the fibers and the matrix is formed on the consolidated preform prior to densification thereof with the matrix, such that the operation of densifying the consolidated preform can be performed without requiring supporting tooling therefor.

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 prolonged release dosage form of drug made by coating a surface of an ungranulated medicinal particle with a water-insoluble material which is physiologically acceptable and does not dissolve in water and gastric juice; and then, granulating or tableting the coated medicinal particles.

Abstract: Dust-control treatment of dusty powder, which mainly passes through a 100 mesh sieve, such as pigment and fertilizer, is achieved by, firstly blending the dusty powder with fibrillatable polytetrafluoroethylene and a pair of materials capable of initiating an exothermic reaction upon contact, and then subjecting the blended material to compression-shear under the exothermic reaction and raising the temperature of the blended material to 50.degree.-300.degree. C. The polytetrafluoroethylene fibrillates during the compression-shear and the formed fibrils enclose the dusty powder to turn it to a dust-controlled one.

Abstract: This invention provides a dispersion composition comprising (a) water and (b) a silylated epoxy resin prepared by reacting (i) a silane having at least two silicon atoms each bearing at least one hydrolyzable group and attached to a secondary amine by a hydrocarbon and (ii) a resin containing at least two epoxy groups and methods of using the dispersion.

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: Composition comprising (a) susceptors having the capability of absorbing microwave energy, said susceptors comprising a particulate substrate substantially non-reflective of microwave energy and a coating capable of absorbing microwave energy, and (b) a matrix substantially non-reflective of microwave energy. Susceptors are typically particles having a thin-film coating thereon. The matrix typically comprises polymeric or ceramic materials that are stable at temperatures conventionally used in microwave cooking. The composition allows reuse of the susceptors, eliminates decline in heating rate, eliminates arcing, allows the heating rate to be controlled, allows overheating to be controlled, and allows formation of microwave heatable composite materials having very low metal content.

Abstract: An extended release pharmaceutical formulation adapted to approach zero order release of drug over a 12 to at least 24 hour period, comprised of a mixture of 0 to about 50% of an immediate release particle containing a drug, inert substrate and binder, coated with talc and up to 100% of an extended release particle comprising the immediate release particle coated with a dissolution modifying system containing plasticizers and a film forming agent.

Abstract: A novel inorganic particulate powder coated with an organic polymer is claimed. The product is obtainable by dispersing in water inorganic particles at a pH higher than their isoelectric point in the presence of a polymeric polybasic acid as a dispersing agent to produce particles having a modified isoelectric point. The pH of the dispersion is then adjusted to a value below 9 but above the modified isoelectric point and an ethylenically unsaturated monomer is polymerized in the presence of the dispersion so as to coat the inorganic particles with polymerized monomer. A method for forming the particles is also claimed.The particles prepared by the method have been shown to be uniformly and discretely coated with an organic polymeric coating and can be used in many applications where it is desired to disperse inorganic particles in organic media such as paints, inks and plastics compositions.

Abstract: A process for the preparation of a dry adsorbable extract of at least one active ingredient, comprising the steps of: first, preparing an extract of the active ingredient in a solvent medium specific to the active ingredient; second coating granules of an absorbent carrier with the extract; third drying and calibrating to a predetermined size the coated granules; and finally absorbing the coated granules produced in step 3 in and on porous excipient nebulized microgranules, which have cavities and ducts which are partially filled by the coated granules, with a ratio of between 5 and 20 parts by weight of coated granules to 100 parts microgranules.

Abstract: Solid particles are coated with a polymer coating, by a process that includes, dispersing the uncoated particles in water, containing a wetting agent, adding a liquid polymer coupling agent, so that the dispersed solid particles have a film of the coupling agent, and agitating the mixture while adding a prepolymer. The coupling agent is reacted with the polymer to form polymer coatings on the dispersed particles. Relatively thin polymer coatings can be achieved by this process. As an extension of the process, the core particles can be materials used for abrasive blast cleaning, filtration, separation catalysis, animal feed, drug dispensing, contacting, tumble cleaning, and slow release of active ingredients.

Abstract: Affinity matrices useful for the chromatography and immobilization of biological materials and the method of preparing and using the same are disclosed. The affinity supports are based on hydrated polyurethane polymers which have been activated to provide a means for covalently attaching a variety of bioaffinity agents. The hydrated polymer matrices are characterized by their biocompatibility and resistance to nonspecific protein adsorption. Preferably, the prepolymers used to prepare the hydrated polymers are isocyanate-capped oxyethylene-based diols or polyols, at least 75% of said diols and polyols having a molecular weight of 7000 to about 30,000.

Abstract: An apparatus and method for continuously producing polymer coated particles, and in particular, a polymer coated fertilizer, wherein the coating material used is, for example, an aqueous film forming latex. The coating process is conducted with a plurality of fluidized beds, connected in series, under conditions such that, preferably, the relative humidity of the air in the initial coating zones is maintained below the critical relative humidity of the particle to be coated. The apparatus and process provides a method to prepare coated particles having a narrow coating weight distribution, and thus allows for the economical production of a slow release fertilizer.

Abstract: A film-forming polyester derived from a monohydric alcohol component having one or more long chain alcohols, the alcohol forming from 5 to 60% by weight of the components from which the polyester is derived. Coating compositions including the polyesters are particularly suitable for applying to cans before the cans are subjected to a spin-necking operation.

Abstract: This invention relates to a process for modifying lignocellulosic materials by a chemical treatment comprising treating the material sequentially or simultaneously with phthalic anhydride and a thermosetting resin at elevated temperature, and finally heat lignocellulosic material so produced can be formed into shapes or molds having excellent dimensional stability.

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: A well treating composition comprising: a gelled carrier; a particulate material; an epoxy resin system including at least one epoxy resin; and a finely-divided hardening agent which, when dissolved, is operable for hardening the epoxy resin. The finely-divided hardening agent is dispersed in the epoxy resin system. A method of treating a subterranean zone located in a well comprising the steps of: (a) preparing the above-described treating composition; (b) injecting the treating composition into the well such that the treating composition is placed in the subterranean zone; and (c) maintaining the finely-divided hardening agent under conditions such that, prior to injecting the treating composition into the well, the finely-divided hardening agent does not substantially dissolve.

Abstract: A color cathode-ray tube having a fluorescent screen of red-, blue- and green-emitting phosphors as image elements of a fluorescent layer, wherein at least one of said phosphors is coated with a double oxide of zinc and aluminum.

Abstract: Solid waste material which contains arsenic and/or mercury impurities is encapsulated in a cured polysulfide polymer so as to alleviate leaching of arsenic and/or mercury into aqueous liquids. Preferably, the solid waste material is first extracted with an alcohol such as ethanol or, alternatively, treated with an oxidizing agent such as aqueous hydrogen peroxide and then substantially dried before the encapsulation with the polymer is carried out.

Abstract: A process for improving the rebound properties of sprayed concrete comprises the inclusion therein of micro-silica which has been pretreated with from 2 to 25% by weight thereof of a liquid selected from water, an alkanolamine, a polyol and an aqueous solution of at least one concrete additive, an alkanolamine, a polyol and a water-soluble cellulosic compound. The process is especially effective when used in conjunction with the dry spraying process.

Abstract: A method of reducing the agglomeration of ceramic powder materials, the method comprising: (a) providing a ceramic powder comprising ceramic particles; (b) coating the ceramic particles with a solution containing from 0.05-0.5 wt. % of a polysiloxanol oligomer of a trialkoxysiloxane monomer having the structureSi(OR').sub.3wherein R' represents a lower C.sub.1 -C.sub.4 alkoxy group selected from the group consisting of methoxy, ethoxy, isopropoxy and n-butoxy and wherein the oligomer has chains having a number average distribution with a number average degree of polymerization X.sub.n in the range above 2 but below that near the gel point; and (c) drying the ceramic powder.

Abstract: What is disclosed is a method for preparing carrier systems, adaptable to the covalent bonding thereto of biologically active materials, consisting of a known solid support material having a surface coated with a polymer containing functional groups suitable for covalent bonding, by coating the support material with a film-forming polymer dispersion and a non-film-forming polymer dispersion, suitably in admixture, at least one of the two polymer dispersions containing a polymer having functional groups suitable for covalent bonding with a biologically active material.

Abstract: A cathode-ray tube phosphor is manufactured by coating, on the surfaces of phosphor particles, a mixture of a metal alginate containing at least one type of a metal selected from the group consisting of Zn, Al, and an alkali earth metal and at least one type of a water-soluble binder selected from the group consisting of gum arabic, gelatin, polymethacrylamide, and polyvinyl alcohol.

Abstract: A method of manufacturing improved strontium or barium ferrite carrier particles for use in two-component electrographic developer compositions for the development of electrostatic charge patterns is provided in which the tendency toward early life dusting of the strontium or barium ferrites is reduced.Such strontium or barium ferrite carrier particles are obtained by (i) mixing unreacted particles of iron oxide and barium or strontium oxide or, alternatively, a salt of barium or strontium convertible to the corresponding oxide by heat upon subsequent firing in a mole ratio of iron oxide to the metal oxide or salt of exactly 5.95 to 6.0:1 with an organic binder and a polar solvent, preferably water, to form a slurry, (ii) spray drying the slurry to obtain green beads of substantially uniform particle size and substantially spherical shape, and (iii) firing the beads at a temperature of from 1150.degree. to 1175.degree. C.

Abstract: A process for the preparation of carrier particles which comprises the dry coating of a carrier or carrier cores with conductive submicron polymeric particles containing from about 1 to about 50 weight percent of conductive fillers, and wherein said conductive polymer particles are prepared by mixing at least one monomer with a polymerization initiator, a crosslinking component and a chain transfer component; effecting bulk polymerization until from about 5 to about 50 weight percent of the monomer has been polymerized; terminating polymerization by cooling the partially polymerized monomer; adding thereto from about 1 to about 50 weight percent of a conductive filler or conductive fillers, followed by mixing thereof; dispersing the aforementioned mixture of conductive filler or fillers, and partially polymerized product in water containing a stabilizing component to obtain a suspension of particles with an average diameter of from about 0.

Abstract: A method and composition for stabilizing and isolating hazardous, radioactive or mixed waste materials of particulate and solid types, which comprises providing a non-toxic one component aqueous mixture of an acrylic polymer containing a thixotropic agent, a vinyl acetate-ethylene copolymer containing a thixotropic agent, or a vinyl chloride copolymer latex containing a thixotropic agent, and applying the mixture over surfaces of hazardous material in an amount sufficient to form a flexible impermeable coating or foam. The mixture may be applied by spraying to form a coating having a thickness of about 0.5 to about 5.0 centimeters when dry. The coated waste material may then be disposed of in conventional manner.

Abstract: The present invention relates to resin coated particulates, the process of forming the particulates, and the particulates, utilization in petroleum well completions. More particularly, the present invention comprises the resin coated particulates and the process whereby the high strength particulate substrates are coated with a heat curable resin which is reacted with a formaldehyde source-metal compound (FS-MC) complex. The resultant resin coated particulates are less reactive or interactive with the fluids employed to convey those particulates during petroleum well completion operations.

Abstract: An iron powder composition comprising an iron powder coated with a substantially uniform coating of a thermoplastic material and admixed with a boron nitride powder and a method of utilizing the mixture to produce a magnetic core component is provided. The iron powder mixture is formulated with up to about 1% by weight of boron nitride which reduces the stripping and sliding die ejection pressures during high temperature molding and also improves the permeability of the magnetic part over an extended frequency range.

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: The invention relates to a soybean seed, lucerne seed or clover seed coated with an inoculant composition comprising a carrier medium, a beneficial microorganism and an adhesive polymeric material. A high average loading of viable organisms per seed is maintained in storage.

Abstract: Roofing granules having surfaces treated with an oil and an elastomeric rubber. The elastomeric rubber can be an organic block copolymer having elastomeric and nonelastomeric repeating units. The oil and rubber are applied to the roofing granules' surfaces as a thin film. The thin film of oil and rubber impedes granule staining from oils in asphalt roofing materials, and reduces dust formation during granule handling. Also disclosed is a roofing shingle and a process for making the roofing granule composition.

Abstract: A method for modifying the surface of finely divided particles, such as pigments and fillers, or of glass fibers is described. The method utilizes organopolysiloxane with epoxy and long-chain alkyl groups linked over carbon atoms to silicon atoms.

Abstract: The invention relates to a method of coating inorganic and organic particles, such as pigment particles and colorant particles with a plastic dispersion.The plastic dispersion is a dispersion of a polymer based ona. a vinyl monomer,b. (C.sub.1 -C.sub.12) alkyl (meth)acrylate, (C.sub.1 -C.sub.12) dialkylitaconate, (C.sub.1 -C.sub.12) dialkylfumarate, (C.sub.1 -C.sub.12) dialkylmaleate, or a mixture thereof,c. a phosphorus-containing compound andd. 0-0.3% (wt) organic unsaturated mono, dicarboxylic acid or a mixture thereof.

Abstract: The soil composition of this invention is comprised of a mixture of sand, clay, a plasticizer material, water, and a coloring pigment, if desired. The components of the soil composition are preferably present in the following proportions by weight: sand 50-70%; clay 10-40%; plasticizer 0.5-5.0%; water 5-20%; and coloring pigment 1-5%. The method of making the invention involves continuously mixing a portion of the sand and the plasticizer in an agitation mixer. The same becomes coated with the plasticizer, whereupon a quantity of clay is then added, followed by an additional portion of the plasticizer material It is particularly important that the sand particles become coated with the plastizing compound and clay. The coloring pigments are added and mixed thereafter. As soon as complete mixing takes place, material can be immediately transferred from the mixer to suitable packaging.

Abstract: The subject invention relates to a process for coating aggregate which is particularly useful in making asphalt concrete to provide the aggregate with a high level of resistance to stripping by water, which comprises: (1) mixing the aggregate with latex to form a latex/aggregate mixture which is comprised of from about 0.005 weight percent to about 0.5 weight percent dry polymer; (2) heating the latex/aggregate mixture to a temperature which is within the range of about 66.degree. C. to about 232.degree. C.; (3) maintaining the latex/aggregate mixture at said elevated temperature for a time which is sufficient to reduce the moisture content of the latex/aggregate mixture below about 0.7 weight percent and to allow the polymer in the latex to crosslink on the surface of the aggregate to produce the coated aggregate.

Abstract: Methods and compositions for controlling fugitive dust emissions from bulk granular or powdered solids are disclosed. Fugitive dust emissions are controlled by applying an aqueous, foamed solution including a water-soluble cationic polymer to dust producing bulk, granular or powdered solids. The cationic polymer is incorporated into an aqueous foam comprising anionic, amphoteric or cationic foaming agents.

Abstract: There is disclosed a process for preparing a resin composition for powder molding, comprising 50 to 97 wt % of a metal or alloy powder and 50 to 3 wt % of a thermoplastic resin having heat resistance and crystallinity, which process comprises dissolving the thermoplastic resin having heat resistance crystallinity in a solvent and at the same time, dispersing therein at least one metal or alloy powder selected from iron, brass, nickel silver, stainless steel and aluminum, having an average particle diameter of not more than 500 .mu.m to thereby prepare a mixture. In addition, there is disclosed a process for producing a powder molded product which comprises cold compressing molding the above resin composition and then heating the molding at a temperature not less than the melting point of the thermoplastic resin. This powder molded product has excellent dimensional stability against heat, chemical resistance, and mechanical strength.