Abstract: A particulate peroxygen compound having improved storage stability against loss of its active oxygen, the peroxygen compound being coated with 0.1 to 3.0 weight percent of an ethylene oxide-derivative stabilizing material.

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: Classified high surface area carrier materials having a specific surface area of at least about 150 cm.sup.2 /gram, a particle size volume distribution geometric standard deviation of less than about 1.3, and a particle size distribution wherein the carrier particles have an average particle diameter of less than about 100 microns. The carrier materials are mixed with finely-divided toner materials to form electrostatographic developer mixtures.

Abstract: A method is provided for producing a fine granular concentrate of fire-retarding, foam-forming solids for addition to host material including plastics, paints, coating compositions and the like by mixing particles of solid fire-retarding additives of particle size less than about 5.mu.m with a polymeric material wherein the particles are surrounded and coated by said polymeric material, said polymeric material being compatible with or the same as the host material to which the coated particles are subsequently added to confer fire-retarding and foam-forming properties thereto. The steps include drying said polymeric-particle mixture, comminuting said polymeric-particle mixture to a granular product of less than about 50.mu.m, and repeating the coating procedure at least one more time on said granular product by mixing said granular product with polymeric material, followed by drying and comminuting said granular-polymeric mixture to provide a granular concentrate having a size of less than about 50.mu.

Abstract: A coated peroxygen compound having improved storage stability, said peroxygen being coated with about 0.1 to about 3.0 weight percent of a polyethylene glycol product having an average molecular weight greater than about 200.

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: Polyaminobismaleimides having superior thermomechanical properties can be produced by reacting maleimide terminated polyaliphatic ethers and maleimide terminated aromatic compounds with an aromatic diamine. These bismaleimide polymers display high recoverable elongation together with good tensile adhesive and electrical properties and thermal and fuel stability.

Abstract: Novel compounds comprising poly(diphenylene ether) backbones having hydrolyzable organosilicon groups bonded thereto are useful in improving adhesion between resinous media and inorganic oxide surfaces.

Abstract: A dentifrice abrasive coated with a cationic water-soluble polymer which abrasive is thereby made less adsorptive to therapeutic cationic agents, and therapeutic compositions containing said abrasive.

Abstract: Coated carrier particles for use in an electrophotographic process are prepared by applying a thin coating of a phosphonitrile fluoroelastomer to the surface of the carrier particles. The coated carriers are long lived and capable of imparting a negative triboelectric charge to electroscopic powders mixed therewith.

Abstract: A simplified method of encapsulating toners is provided which comprises polymerization and coacervation resulting in a copolymer encapsulated in an incompatible shell polymer. Toner particles are prepared by mixing a solute polymer in a solvent monomer after which polymerization of the solvent monomer is initiated, resulting in a polymer from the solvent monomer which phase-separates from the solvent monomer to form a solvent-poor phase which eventually comprises the capsule core. The solvent-rich phase then provides the material for the capsule wall.

Abstract: Compositions for flameproofing plastics without the release of toxic products during use in which compositions consist of a pulverulent mixture containing from 50 to 95% by weight of red phosphorous and from 5 to 50% by weight of polymers having unsaturated malenoid, fumaroid or allyl bonds.

Abstract: A composition of matter useful for dispersing a critical chemical in a rubber or plastic compound, said composition comprising from about 60 to about 95 percent by weight of a critical chemical and from about 5 to about 40 percent by weight of a binder, said binder comprising at least one component selected from (i) liquids compatible with said rubber or plastic compound and with the other binder components and (ii) waxes having a sharp melting point in the range of 55.degree.-80.degree. C, and a polymer having a molecular weight of at least about 50,000 which when combined with the other binder components produces a binder which is a non-tacky gel below about 53.degree. C. The composition can additionally comprise a fine powder reinforcing agent, which can also serve as a stabilizer for the binder.

Abstract: Normally hydrophilic inorganic fillers for polymeric resins are modified to enhance their dispersibility in such resins by admixing filler particles with a block copolymer of ethylene oxide and propylene oxide under shear and at an elevated temperature so as to coat the filler particles with a portion of the block copolymer. Thermoplastic polymeric resins, such as polyethylene and polypropylene, containing thus-modified fillers can be conventionally formed into products, such as thin film bags, having improved strength properties.

Abstract: A method for preparing water-containing liquid detergent compositions containing components which are usually unstable in such systems, comprising encapsulating such components in a material at least 10% of which is a water-soluble normally solid alkoxylated nonionic surface active agent, preferably either polyethylene glycol with a molecular weight of from about 3000 to 40,000 or the condensation product of tallow alcohol with from about 20 to 80 moles of ethylene oxide. "Encapsulating" is broadly defined to include processes such as prilling, agglomerating, encapsulating, admixing, coating, noodling, flaking, and Marumerizing such components. Detergent compositions, which exhibit storage stability, containing such encapsulated components are also claimed.

Abstract: A process for producing an electrostatic recording material which comprises kneading a hydrophobic pigment having a critical surface tension of 50 dynes/cm or less with an aqueous dispersion of a copolymer consisting of (I) 10 to 50% by weight of methacrylic acid, (II) 5 to 50% by weight of a alkenyl aromatic compound and (III) 30 to 85 % by weight of at least one member selected from the group consisting of conjugated diolefins, alkyl acrylates and alkyl methacrylates; having a glass transition temperature (Tg) of 40.degree. C or less; and having an intrinsic viscosity [.eta.] of 0.1 to 1.0 dl/g as measured in tetrahydrofuran at 25.degree.

Abstract: Electrostatographic developer compositions for use in developing electrostatic latent images wherein the triboelectric charging potential of functional polymers employed in the carrier materials are controlled through chemical alteration by aminolysis of ester functions. The controlled variation of the triboelectric behavior of functional polymers by aminolysis provides a means of attaining optimum triboelectric responses in development systems.

Abstract: Processes for producing colored toner particles are provided comprising mixing a monomer, a colorant and an initiator to form an oil soluble organic phase; dispersing this oil soluble phase in controlled size between 5 to 20 microns in a water phase, employing a suspending agent, for example polyvinyl alcohol; polymerizing, employing conventional suspension polymerization techniques; introducing a second monomer which is allowed to diffuse into the first polymer and consequently swells the polymer; introducing a water soluble initiator; and heating this reaction mixture to effect a polymerization of the second monomer and form the desired toner.

Abstract: A flame-sprayable flexible wire comprising a mineral powder having a particle size of less than about 140 mesh and about 5 to 70% by volume of the wire of a polyurethane or epoxy polymer. Advantageously the wire is produced by forming the requisite mixture plus a curing agent, effecting a partial cure in a sheet form, crumbling the sheet to coarse granules and extruding the granules to form the wire. The mineral powder particles may first be coated with a surface active resin such as a silicone which promotes adhesion to the polymer and which protects the polymer from the degradative effect of the mineral. The preferred surface active resins are silicones. The wire retains its strength and flexibility over long periods of time and produces high quality flame sprayed surfaces.

Abstract: Electrostatographic developer compositions for use in developing electrostatic latent images wherein the triboelectric charging potential of functional polymers employed in the carrier materials are controlled through chemical alteration by acylation of hydroxyl and amino functions. The controlled variation of the triboelectric behavior of functional polymers by acylation provides a means of attaining optimum triboelectric responses in development systems.

Abstract: Particulate porous absorptive material such as carbon is coated with a biocompatible polymer to give a thin (e.g. 1-10 micron) smooth permeable coating without plugging the pores. The resulting material is free from fines and surface debris and useful for haemoperfusion. Coating is best effected by spraying hot washed carbon granules, free from fines and in rapid movement with a solution of polymer (e.g. polyHEMA) so as to bring about rapid evaporation and a coating weight preferably of up to 20% usually 0.25% to 5%.

Abstract: A novel yellow developer system is provided which employs a Yellow 97 toner in combination with a carrier coated with resin containing copper tetra-4-(octadecylsulfonomido) phthalocyanine. This developer is found to yield prints of exceptional quality and provides long developer life. Processes employing this developer in a color electrophotographic process are also disclosed.

Abstract: A method of stabilizing pyrophoric metal powders by treating the metal powders with alkylene oxides to form a polymer coating on the metal particles.

Abstract: Finely divided hydrophobic silica and silicates are prepared by precipitating of alkali silicate solutions with mineral acids or metal salt solutions and treated with organohalosilanes. To the acid precipitation suspension recovered in known manner there is added as a hydrophobizing agent an organohalosilane, preferably at about 50.degree. to 90.degree. C., the precipitated product filtered, washed and dried and there subjected to a temperature of 300.degree. to 400.degree. C. There is used as the organohalosilane a prepolycondensed organohalosilane or a mixture of prepolycondensed organohalosilanes.

Abstract: Carrier particles of development powders are treated with a sodium salt of polystyrene sulfonic acid. As a result of the treatment, the triboelectric properties of the carrier particles are better controlled.

Abstract: Carrier particles for use in an electrophotographic process are prepared by applying a mixture of a perfluoro acid and polyvinylidene fluoride to the surface of the carrier particle. The resulting carriers are long lived, abrasion resistant and capable of imparting a high triboelectric charge to electroscopic powders mixed therewith.

Abstract: A liquid developer for producing an ink receptive, water repellent, oleophilic image suitable for use in the production of multiple copies by lithographic technique wherein the toner employed in the developer composition has precipitated thereon the polyvinyl acetate binder component.

Abstract: A carrier particle for electrostatographic developer mixtures comprising a core having a thin, wear-resistant coating of a polysulfone. The carrier coating is durable and resistant to mechanical degradation. The carrier particle is used in conjunction with finely-divided toner particles to develop electrostatic latent images.

Abstract: The disclosed corrosion-inhibiting elastomers are typically made by milling the corrosion inhibitor into a solid rubber matrix. Preferred corrosion inhibitors include the aromatic carboxylates of primary, secondary or tertiary amines. Chromates and 2-ethylhexanoates can also be used. Organic ammonium nitrites are effective against some types of corrosion, but should be used with relatively inert elastomers. There appears to be synergistic cooperation between the elastomeric molecular structure and the corrosion inhibitor resulting in unusually effective protection of ferrous and/or nonferrous metals adjacent to rubber parts made from the corrosion-inhibiting elastomer.

Abstract: Method comprises adsorbing colloidal particles of a latex onto phosphor particles, providing filter particles in a liquid medium, optionally adsorbing colloidal particles of a latex onto the filter particles and combining the phosphor particles and filter particles into a single mixture. The foregoing steps, which are conducted in aqueous media, may be carried out in any order. Thereafter, the combined mixture of phosphor particles with adsorbed colloidal particles thereon and filter particles is coagulated while in an aqueous medium.

Abstract: A cement composition suitable for cementing high temperature wells comprises dry cement grains coated with a tenacious film of a crosslinked hydroxyalkyl cellulose. The film resists high temperature hydrolysis and is effective to retard the setting of the cement in high temperature environments. The method of preparing the composition involves coating the dry cement grains, preferably by a microencapsulation process, with the crosslinked hydroxyalkyl cellulose film. The cement composition is particularly useful in cementing pipe strings in wells.

Abstract: Novel injection molding fiberglass reinforced thermoplastic concentrate granules are prepared by a process wherein continuous multifilament glass strands are impregnated with from 10 to 30 percent by weight of thermoplastic resin and, while the strand is maintained under controlled temperature conditions, the impregnated strand is cut to lengths of at least 1/8 of an inch.

Abstract: The invention concerns grafted mineral carriers comprising oxides, hydroxides and other insoluble, porous mineral compounds, upon which are grafted haloalkylsilane groups which may or may not be substituted and whose alkyl residue comprises from 3 to 11 carbon atoms. They are used as industrial catalyst carriers, in chromatography and more particularly for fixing enzymes.

Abstract: Aminoplast or phenoplast moulding compositions are manufactured by passing an aqueous solution of a urea-formaldehyde resin, of an optionally phenol-modified melamine-formaldehyde resin or of a phenol-formaldehyde resin into a fluidized bed drier, by spraying the resin onto fillers and drying it. The compositions are used for crockery, household articles and technical components for the electrical industry.

Abstract: Dusty additives intended to be used as stabilizer, lubricants, etc. in a polymer or copolymer of vinylchloride are firstly mixed with said polymer or copolymer of vinylchloride, or of acrylonitrile, or of butadiene or of styrene in granular form, e.g. in the form in which they are rendered by a suspension polymerization process, at a temperature of 167.degree. to 230.degree. F., and then cooled to obtain that these additives come into the granules of polymer or copolymer, retaining the same granulometry of this polymer or copolymer granules, with said additive constituting up to 5/6 of the resulting mixture.

Abstract: A process for the activation of peroxide-based bleaches comprises conjointly incorporating into an aqueous medium a peroxide-based bleach, a buffering agent to maintain the aqueous medium at a pH above 7.5, and cyanamide, which has been found to be a highly effective peroxide activator when employed under alkaline conditions. Stable concentrated liquid and solid cyanamide-activated bleaching compositions are also disclosed.

Abstract: A pigmentary composition prepared by coating metallic particles of pigment by means of a polymer or copolymer, by covering the polymerization or copolymerization "in situ" of at least one ethylenically unsaturated monomer having at least one oxygen or nitrogen heteroatom, and having a mono- or di-carborylic acid function, or an ester, nitrile or amide function or an N-substituted amide function, or an amine, alcohol or ether function, wherein the polymerization or copolymerization reaction is effected in a medium comprising at least one organic solvent in which the monomer is soluble and in the presence of at least one polymerization catalyst soluble in this medium, the monomer and the proportion thereof being selected so that the polymer or copolymer formed is insoluble in the organic solvent used.

Abstract: Normally hydrophilic inorganic fillers for polymeric resins are modified to enhance their dispersibility in such resins by admixing filler particles with a block copolymer of ethylene oxide and propylene oxide under shear and at an elevated temperature so as to coat the filler particles with a portion of the block copolymer. Thermoplastic polymeric resins, such as polyethylene and polypropylene, containing thus-modified fillers can be conventionally formed into products, such as thin film bags, having improved strength properties.

Abstract: A method is provided for forming encapsulated particles comprising forming a dispersion of core material in a solution of wall material in a solvent; drowning said dispersion in at least one liquid which is miscible with the solvent and in which at least the wall material is substantially insoluble, to effect phase-separation of said wall material, whereby said wall material deposits about said core material forming a dilute dispersion of particles comprising said core material encapsulated with said wall material in said liquid, and recovering said encapsulated particles from said liquid.

Abstract: A prill comprising an organosilane and a water-soluble or water-dispersible, normally solid, nonionic material. The organosilane is stabilized within the prill and can be included in moisture-containing, highly alkaline or electrolyte-containing compositions, e.g. detergent compositions.

Abstract: A carrier granule containing an inert inner core and a coating of an organosilane and water-soluble or water-dispersible, normally solid, nonionic material. The organosilane is stabilized within the carrier granule and can be included in moisture-containing, highly alkaline or electrolyte-containing compositions, e.g. detergent compositions.

Abstract: The performance of an aqueous detergent composition containing an anionic detergent and an organosilane capable of imparting soil release benefits to hard surfaces washed therewith is enhanced by the addition of free alkalinity and/or mineral hardness ions. The detergent composition can be formulated for use in a wide range of applications such as dishwashing liquids, car wash compositions and general hard surface cleaners.

Abstract: Semiconducting carbonaceous pyropolymeric inorganic refractory oxide materials are prepared by introducing inorganic refractory oxide materials into a reaction section which may comprise a horizontal screw reactor wherein said inorganic refractory oxide materials are contacted with a gasified hydrocarbon thereby maintaining the inorganic refractory oxide material in a semifluidized state. Following this contact, the resultant carbonaceous pyropolymer coated inorganic refractory oxide material is then cooled and recovered.

Abstract: Phosphor grains coated with wax or plastic coating compositions comprising hydrocarbons are useful as tagging phosphors for explosives. The coating composition can incorporate UV opacifiers, coloring agents or antistatic agents, or mixtures of them.

Abstract: Disclosed is a process of coating discrete, unagglomerated particles of less than 20 microns with a high polymer coating, and compositions such as conductive compositions using such coated particles. The particles are coated with the polymer in a fluid energy mill such that substantially uniform coated particles are obtained which are free-flowing, non-agglomerative and readily dispersable in a suitable binder.

Abstract: Particulate peroxygen compounds such as sodium percarbonate are coated with a copolymer of vinylidene chloride and another copolymerizable monomer. These coated compounds can be used in detergent mixtures. The coating of peroxygen compound with such films protect the compound from the effect of decomposition by wet air during storage while it permits liberation of the peroxygen compound in an aqueous washing solution.

Abstract: The apparatus provides a homogeneous (with respect to particle size), dense, mass of sized particles in random motion so that highly uniform coatings of the same or of different solids can be applied to each particle by conventional spray-coating with the liquified coating material(s). The apparatus is a horizontal rotary drum containing lifting flights. A novel deflector pan is fixed in space inside the upper section of the drum which deflects particles falling from the lifting flights to the side of the drum where they form a narrow, dense falling cascade. The coating material is sprayed onto the cascading particles, preferably as they free-fall after leaving the lower edge of the pan. However, if desired, some or most of the coating material may be directed onto the top edge of the moving bed including the juncture of the cascade therewith.

Abstract: A process for the preparation of pigmentary compositions which comprises coating the particles of pigment by means of a polymer or copolymer, by covering by the polymerisation or copolymerisation "in situ" of at least one ethylenically unsaturated monomer having at least one polymerisable double bond and containing at least three carbon atoms or at least two carbon atoms and a heteroatom and/or a halogen atom attached to one of the carbon atoms wherein the polymerisation or copolymerisation reaction is effected in a medium comprising at least one organic solvent in which the monomer is soluble, and in the presence of at least one polymerisation catalyst soluble in this medium, the monomer and the proportion thereof being selected so that the polymer or copolymer formed is insoluble in the organic solvent used, the ratio by weight of pigment to resin being from 10/90 to 95/5 and the amount of catalyst being from 0.

Abstract: Metallizing coating compositions having greater sparkle and glitter are formed by including in the coating composition insoluble resin-supported planar reflective metal flakes in an amount of from about 0.0003 to about 0.035% of metal (particularly aluminum) based on the weight of the composition. The flakes are supported and rendered more planar by using a metal film surfaced on both sides with a relatively insoluble resinous film having a thickness of at least 0.01 mil. When the supported metal film is broken up to form flakes, the flakes are flatter and reflect light over a larger portion of their surface to permit use in smaller amount.The present invention relates to organic coatings containing separated reflective aluminum flakes which add sparkle to the coated film.

Abstract: Certain glycerides are effective flow-promoting agents in powdered acrylic coating formulations. As a powdered acrylic resin coating material is applied by electrostatic sprayer means to a substrate, a rough layer of discrete particles is formed. To produce a commercially acceptable coating, this layer must be fused into a continuous film and induced to flow into a smooth, glossy finish. The subject glycerides, which may be acetylated, promote such flow and produce a surface finish equivalent to that of the conventional acrylic paints which employ an organic solvent vehicle.