Abstract: A power coating composition comprises at least one film-forming polymeric material and has dry-blended therewith two or more dry-blended additives selected from solid, particulate, inorganic, water-insoluble materials which may be ceramic or mineral materials and/or may be oxides, mixed oxides, hydrated oxides, hydroxides, oxide-hydroxides or oxysalts of metals and metalloids, at least 95% by volume of the powder coating composition having a particle size not exceeding 50 microns.

Abstract: Microcapsules comprise a polymeric wall material and a polymeric core material which is suitable as a leveling agent for film formation by film-forming oligomers and polymers.

Abstract: Vinylidene fluoride copolymers having a melting temperature below about 160.degree. C. are used to prepare pigmented powder coatings for galvanized steel. The coatings are corrosion-resistant and generally show a high gloss.

Abstract: A process for improving the electrostatic charge developed on a resin powder composition for electrostatic coating of solid objects and the method of application thereof. The resin powder comprises (i) a thermosetting or thermoplastic resin and (ii) an electrostatic property modifying agent (polyalkylene ether, polyalkylene glycol, polyethoxylated stearyl alcohol) incorporated in the resin or on the surface of the resin. The methods of application of the powder involves charging the powder by electrical induction/conduction and spraying the charged powder onto a grounded solid object to which it adheres prior to the thermal fusing to produce a permanent finish.

Abstract: The use of cyclamic acid as a catalyst for the curing of hydroxyl-functional resins having a functionality greater than 2 provides a wrinkle finish. The hydroxy-function may be present in polyesters, epoxies, and acrylate or methacrylate resins, among others. The polyester resins which are able to provide such a finish have a hot plate melt flow of from about 20 mm to about 150 mm.

Abstract: Fine polyurethane particles or fine polyurethane gel particles, which have been surface-covered with colloidal polyurea particles, are provided. They are produced by emulsion polymerization of a polyisocyanate compound and an active-hydrogen-containing compound in an inert liquid while using colloidal polyurea particles as an emulsifier.

Abstract: A coating powder composition for providing a smooth, heat-resistant coating contains A) between about 60 and about 95 parts by weight or a polyester resin which has either hydroxyl functionality of 2 or greater or carboxylic acid functionality of 2 or greater, B) between about 5 and about 40 parts by weight of a curative for the polyester resin A), A) and B), in total, being 100 parts resin, C) between about 50 and about 150 parts per hundred resin by weight (phr) silicone resin, D) between about 20 and about 100 phr of a filler selected from calcium silicate, silica, magnesium aluminum silicate, calcium carbonate, barium sulfate, and mixtures thereof, E) between about 1 and about 10 phr silicone rubber, and F), up to about 50 phr mica.

Abstract: The present invention provides a new and improved method of producing coating materials comprising the steps of providing a first organic material which is solid at room temperature, providing a second organic material which is solid at room temperature and which is substantially different in chemical composition from the first organic material, providing a source of supercritical fluid, providing a first container having a mechanical agitator, providing a second container, introducing the first and second organic materials and the supercritical fluid into the first container and mechanically agitating such materials and the supercritical fluid, and discharging the contents of the first container into the second container so as to collect substantially all of the first and second organic materials in the second vessel, the second container being maintained at a lower pressure than the first container.

Abstract: Polymer particles which are substantially spherical and have protrusions on the surface thereof, with such a particle size distribution that the volume mean diameter dv thereof is 1.ltoreq.dv.ltoreq.15 (.mu.m), and the ratio of the volume mean diameter dv to the number mean diameter dn thereof, that is, dv/dn, is 1.ltoreq.dv/dn.ltoreq.1.2, are prepared, and used as a component for a toner for use in electrophotography.

Abstract: Polymeric powder coating compositions featuring improved physical properties including improved impact strength, improved adhesivity and other properties is provided by a polymeric powder coating composition which comprises: (a) polymeric powder coating resin, (b) at least one low molecular weight ethylene copolymer having a degree of saponification of at least 25%, (c) a further constituent selected from the group consisting of catalyzing agents, flow control agents, coloring agents, fillers, processing aids, wherein the weight ratio of (b) to (a) is preferably in the range of 0.01%-20% to 99.99%-80%. The powder coating composition may be applied to articles using conventional techniques. Processes for producing the polymeric powder coating compostiions, and articles comprising the same are also disclosed.

Abstract: Compositions suitable for application in powder coating processes are produced by melt atomisation of thermosettable mixtures. The product is characterised by improved particle size distribution and by a generally rounded particle shape.

Abstract: A thermosetting powdery coating composition which comprises, in admixture: (A) from 40 to 98 parts by weight of a fluorine-containing copolymer, which is a copolymer of a fluoroolefin and a comonomer having a crosslinkable reactive group, e.g., hydroxy, carboxyl, amino and glycidyl groups, containing at least 10% by weight of fluorine and having an intrinsic viscosity of 0.05-2 dl/g (30.degree. C., tetrahydrofuran), a glass transition temperature of 30.degree.-120.degree. C. and a weight loss by heating which does not exceed 2% and (B) from 60 to 2 parts by weight of a curing agent capable of forming crosslinks by reacting with the crosslinkable reactive groups in (A), except for the composition wherein (A) is a hydroxyl group and a weight loss by heating which does not exceed 2% and (B) is a blocked isocyanate compound.

Abstract: The present invention provides a powder coating composition which is suitable for precoated steel plates. The powder coating composition has excellent storage stability (e.g. blocking resistance) and provides a cured film having good weather resistance and a good balance of hardness and processability. The powder coating composition comprises;(I) 95 to 70% by weight of a polyester resin having a glass transition temperature of 40.degree. to 70.degree. C., prepared from (i) and acid component containing at least 80 mole % of an aromatic dicarboxylic acid with (ii) a polyol component which comprises(a) at least 50 mole % of neopentyl glycol, and(b) 1 to 10% by weight of a diol selected from the group consisting of a linear chain C.sub.8 -C.sub.16 alkylene diol, 2-methyl-1,8-octane diol and a mixture thereof, and(II) 5 to 30% by weight of a curing agent.

Abstract: The present invention provides a new and improved method of producing coating materials comprising the steps of providing a first organic material which is solid at room temperature, providing a second organic material which is solid at room temperature and which is substantially different in chemical composition from the first organic material, providing a source of supercritical fluid, providing a first container having a mechanical agitator, providing a second container, introducing the first and second organic materials and the supercritical fluid into the first container and mechanically agitating such materials and the supercritical fluid, and discharging the contents of the first container into the second container so as to collect substantially all of the first and second organic materials in the second vessel, the second container being maintained at a lower pressure than the first container.

Abstract: A thermosetting powder coating composition which contains a resin composition containing (a) 60 to 97 weight % of a fluororesin having reactive group for crosslinking in the molecule which contains 10 weight % or more of fluorine and has glass transition temperature in the range from 35.degree. to 120.degree. C., (b) 3 to 40 weight % of a hardener which can form crosslinking by reaction with the reactive group for crosslinking in the fluororesin (a), (c) 0.01 to 10 weight parts of a synthetic wax or a natural wax based on 100 weight parts of the resin composition and (d) 0.001 to 1.0 weight parts of a material as a coupling agent based on 100 weight parts of the resin composition, forms a coating layer which has the same degree of water repellency and slipping property as those formed from polytetrafluoroethylene powder while the excellent weatherability, acid resistance and adhesion to substrates are retained.

Abstract: The present invention relates to an improved powder coating composition comprising (a) a resin, (b) a curing agent and (c) zinc, wherein the zinc is a mixture of (c1) lamellar zinc and (c2) zinc dust.

Abstract: Thermosetting powder coating compositions are produced based on a low molecular weight glycidyl functional copolymer produced by solvent polymerization of ethylenic monomers in an organic solvent polymerization medium containing at least 15% by weight organic solvent based on the weight of solvent and monomers copolymerized, where the ethylenic monomers copolymerized comprise on a weight basis between about 15% and 35% glycidyl methacrylate, between about 5% and 60% methyl methacrylate, between about 2% and 15% butyl methacrylate, and between about 5% and 50% styrene, to produce glycidyl functional copolymer having a melt viscosity between 150 and 400 poise and a Tg between 80.degree. C. and 100.degree. C., where the copolymer is coreactive with carboxyl functional crosslinking compounds.

Abstract: Glycoluril based amino resin powder coating compositions have improved flow out and viscosity characteristics when a rheology improving additive selected from alkali metal oxides, alkali metal hydroxides, alkali metal carbonates, alkaline earth metal carbonates, alkaline earth metal oxides, alkaline earth metal hydroxides, aluminum oxides, aluminum hydroxides, aluminum carbonates, zinc salts of long chain fatty acids, aluminum salts of long chain fatty acids, monoamines, dismines, or mixtures thereof are added.

Abstract: An aluminum member provided with a weather-resistant coat having good corrosion resistance, weather resistance, paintability, etc., the coat having (a) a primer layer of an epoxy polyester-based, hybrid powder coating composition formed on an aluminum member; (b) a base coat layer of a metallic acrylic coating composition formed on the primer layer; and (c) a barrier coat layer of a high solid-type, clear, acrylic coating composition formed on the base coat layer.

Abstract: A solventless process for preparing a fluoropolymer based coating which involves mixing and heating a fluoropolymer with a thermoplastic acrylic resin to obtain a molten mixture, slowly cooling the molten mixture to obtain a solid mass having a degree of crystallinity of at least 85% and grinding the solid mass at a temperature higher than -50.degree. C.

Abstract: A thermosetting powder coating composition comprises (a) a fluororesin having reactive group for crosslinking in the molecule which contains 10 weight % or more of fluorine and has glass transition temperature in the range from 35.degree. to 120.degree. C., (b) a hardener which can form crosslinking by reaction with the reactive group for crosslinking in the fluororesin (a) and (c) a synthetic wax or a natural wax. The amount of the fluororesin is in the range from 60 to 97 weight % and the amount of the hardener is in the range from 3 to 40 weight % based on the total of the fluororesin and the hardener. The amount of the synthetic wax or the natural wax is in the range from 0.01 to 10 weight parts based on 100 weight parts of the total of the fluororesin and the hardener.

Abstract: Thermosetting powder coating compositions comprising a curable particulate resinous material and a flow control agent which is a copolymer of an alkyl acrylate or methacrylate containing from 6 to 20 carbon atoms in the alkyl group and a hydroxyalkyl acrylate or methacrylate. The flow modifiers enhance the rheology of the thermosetting powder coating composition providing for smoother coatings while at the same time not adversely affecting appearance or adhesion with associated coatings, for example, previously applied electrodeposited primers or subsequently applied topcoats.

Abstract: The present invention relates to a process for the production of powder coating compositions having a glass transition temperature of 20.degree. to 80.degree. C. bya) homogeneously dissolving in an inert solvent or solvent mixture having a boiling point or range between 50.degree. and 150.degree. C.A) a polyol component having a hydroxyl value of 30 to 155 and a glass transition temperature of 30.degree. to 120.degree. C. and containing at least one hydroxy-functional copolymer of olefinically unsaturated monomers,B) a polyisocyanate component containing blocked isocyanate groups, having a glass transition temperature of -45.degree. to +45.degree. C. and containing at least one ketoxime-blocked polyisocyanate andC) a catalyst component containing at least one catalyst for the reaction between blocked isocyanate groups and hydroxyl groups components,wherein components A) and B) are present in an amount which is sufficient to provide an equivalent ratio of blocked isocyanate groups to hydroxyl groups of 0.

Abstract: The present invention provides an improved process for producing organic particles (e.g. toner particles) having uniform charge controlling coating and excellent charge controlling effect. In the process, a dispersion comprising the organic particles (A), a specific compound (B) forming insoluble substances upon reacting with an insolubilizer (D) and a dispersing medium is prepared and then reacted with the insolubilizer (D).

Abstract: Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification a net negative charge and contains thermoplastic resin(s) as binder in combination with a colorant and a compound capable of imparting a negative charge to the particulate toner material in contact electrification, wherein the latter compound is an anthranilic acid derivative comprising a sulfonamido-group.

Abstract: Use of polymeric ammonium salts which have a molecular weight of about 5000 to about 500,000, and are obtained by homopolymerization of monomers, such as, for example, diallyldialkylammonium chloride, or by copolymerization of mixtures of two monomers, such as, for example, diethyldimethylammonium chloride and diallylmethyloctylammonium chloride, with molar monomer ratios of about 0.5:0.5 to about 0.95:0.05 in the copolymer, and if appropriate subsequent anion exchange, individually or in combination as charge control agents in electrophotographic toners and developers which are employed for copying or duplicating masters and for printing electronically, magnetically or optically stored information or in colorproofing, and as charge control agents in powders and powder coatings.

Abstract: The present invention relates to a thermosetting powder coating composition comprising a thermosetting polymer, a crosslinking agent, and a bisphenoxy-propanol as a melt viscosity modifier. Preferably, the composition additionally comprises a flow control agent different from the bisphenoxy-propanol.

Abstract: The invention relates to a triboelectrically processable powder coating based on a polyester-containing binding agent and a nitrogen-containing additive. The nitrogen-containing additive is a sterically hindered tertiary amine or aminoalcohol.

Abstract: Disclosed is a process for preparing polymer particles suitable for electrophotographic toner. The substantially spherical resin particles have a weight average particle size of 1 to 30 microns and contain a carbon atom as main component, a silicon atom in an amount of 1.times.10.sup.-1 to 7% by weight and/or a fluorine atom in an amount of 1.times.10.sup.-2 to 2% by weight. The particles are prepared by polymerizing a polymerizable monomer in an organic solvent having a higher solubility parameter (SP value) than the resultant polymer by at least 1.0 in the presence of a dispersion stabilizer which is soluble in said organic solvent and which has a dialkylsiloxane bond and/or a fluorine atom, and then removing said organic solvent.

Abstract: The present invention is a powder coating composition as well as a process for its preparation. The powder coating, having a particle size of about 5 to 250 microns, can form improved, glossy coatings similar to chrome plate. The process comprises milling together a resinous binder and aluminum particles to produce a powder material, adding an effective amount of a fluidizing agent per hundred parts of binder to the powder material having a particle size of 5 to 250 microns.

Abstract: A toner composition comprised of resin particles, pigment particles, and bis-(distearyldimethylammonium)sulfate.

Abstract: Process for specifically influencing the triboelectric effect of azo pigments in electrophotographic toners or developers or in powders for surface coating by adding to the azo pigments at the coupling reaction stage, at the laking stage or in the course of finishing at least one saltlike, cationic compound whose positively charged center is a nitrogen, phosphorus, arsenic or antimony atom or the group ##STR1## and use of such azo pigments for producing toners or developers used for the electrophotographic copying or manifolding of originals or for printing electronically, optically or magnetically stored data or in colorproofing or use of such azo pigments for producing powders or powder coatings used for the surface coating of articles made of metal, wood, plastics, glass, ceramics, concrete, textile material, paper or rubber.

Abstract: A magnetic toner for developing electrostatic images, comprising at least a binder resin and a magnetic powder; the binder resin having 10 to 70 wt. % of a THF (tetrahydrofuran)-insoluble and a THF-soluble, the THF-soluble providing a molecular weight distribution in the chromatogram of GPC (gel permeation chromatography) thereof such that it provides a rate (Mw/Mn) of weight-average molecular weight (Mw)/number-average molecular weight (Mn).gtoreq.5, there are a peak in the molecular weight range of 2,000 to 10,000 and a peak or shoulder in the molecular weight range of 15,000 to 100,000 and a component having a molecular weight of 10,000 or smaller is contained in an amount of 10-50 wt. % based on the binder resin; the magnetic powder comprising spherical magnetic particles having a bulk density of 0.6 g/ml or larger.

Abstract: This invention relates to carriers for electrophotography comprising a binder component including a binder resin, a polymeric-magnetic coordination complex, and an inorganic magnetic material dispersed in the binder component at the ratio of 100-900 parts by weight to 100 parts by weight of the binder component, which effect the electrical resistance as well as magnetic properties. Carriers of the invention are suitable, in particular, for a copier furnished with a high rotation developing sleeve.

Abstract: A toner composition comprised of electrostatically attractable fusible powder particles, having an average particle size in the range of 1 to 100 .mu.m and a melt viscosity at 190.degree. C. in the range of 20 to 200 Pa.s, said powder particles comprising a coloring substance, a polymeric binder which consists essentially of a copolymer of:(1) styrene or styrene homologue,(2) an alkyl acrylate or alkyl methacrylate monomer wherein alkyl is a straight chain of at least 8 carbon atoms, and(3) a crosslinking monomer containing at least two ethylenically unsaturated groups,the binder copolymer constituting more than 50% of the total weight of the powder particles.

Abstract: A process for producing an electrophotographic toner in one step by suspension polymerization of monomers capable of forming a fixing resin. In a first embodiment, the suspension polymerization is carried out in the presence of a specific suspension stabilizer and a radical polymerization initiator. In a second embodiment, the suspension polymerization is carried out while applying ultrasonic radiation of a fixed frequency. The process gives a toner having a uniform particle size distribution.

Abstract: Cohesive flexible curable adhesive coatings formed from a dispersion of first and second powdered curing components, preferably reactive at ambient temperatures, in a solution of a binder, the binder content being not more than 15%, preferably not more than 2.5% by weight of the dried composition. Also claimed are curable compositions having a specific advantageous reactive particle size distribution; specific epoxy-amine adduct curing agents; and specific polyalkylene oxide binders.

Abstract: An electrostatic image developing toner useful for the formation of a toner image by electrophotographic process which employs a heat-fixing method by the use of a heat roller under pressure, wherein said toner comprises as the essential constituents a nonlinear polymer, a low-melting polymer which has a melting point of from 50.degree. to 130.degree. C. and which is incompatible with said nonlinear polymer, a copolymer composed of a segment polymer which is at least compatible with the above nonlinear polymer and a segment polymer which is at least compatible with said low-melting polymer and a coloring agent.

Abstract: New electrostatographic toners and developers are provided containing new charge-control agents comprising quaternary ammonium salts having the structure ##STR1## wherein R is alkyl having 12 to 18 carbon atoms.

Abstract: Particulate novolac resins and aqueous dispersions are produced by condensing phenol with aldehyde using acid catalysis. Following neutralization, particulate novolac resin is formed by adding protective colloid to the aqueous mixture. Resin particle isolation can be aided by dephenolation.

Abstract: Disclosed is a composition adapted for use in coating pellets orally administrable to ruminants which protects the core material in the rumen and releases it in the abomasum comprising a film-forming polymeric material, a hydrophobic material dispersed in said polymeric material, and a physiologically acceptable flake material dispersed in said polymeric material, the flake material having been treated by bringing the particles into rubbing contact with the hydrophobic material so that the surface of the particles of flake material become hydrophobic.

Abstract: Novel particulate polymeric materials which can be arranged in a predetermined three dimensional pattern in or on a surface, fused and cooled to provide fused, three dimensional polymeric articles. The particulate polymeric materials have the capability to provide a release coating about the fused polymeric article which permits removal of the article from the surface carrying the article.

Abstract: Addition of waxes or wax-like substances, in conjunction with metal salts or metal complexes of organic compounds, to powder coating compositions based on epoxy resins and carboxyl-terminated polyesters affords a matting effect without substantially impairing the other properties of said coating composition.

Abstract: Heat-curable surface-coating agents useful not only for application as solvent-containing finishes and for powder coating but also, in their protonated form, for cathodic electrocoating contain, as a binder, a mixture of (A) a polyadduct, polycondensate or other polymer having an average molecular weight M.sub.n of from 500 to 10,000 and, per molecule, on average two or more OH and/or primary and/or secondary amino groups and (B) a reaction product of (a) one or more polyisocyanates, (b) one or more secondary monoamines and, if appropriate, (c) one or more polyalcohols having two or more hydroxyl groups.

Abstract: A resin composition comprising(I) a granular or powdery resin which is a condensation product of a phenol, an aldehyde and optionally a nitrogen-containing compound having at least two active hydrogens and is characterized by (A) containing spherical primary particles and their secondary agglomerated particles each having a particle diameter of 0.1 to 150 microns, (B) having such a size that at least 50% by weight thereof can pass through a 100 Tyler mesh sieve, and (C) having a free phenol content, determined by liquid chromatography, of not more than 500 ppm, and(II) at least one member selected from the group consisting of (1) a rubbery elastic material, (2) a thermoplastic resin and (3) a curable resin other than said granular or powdery resin (I) and/or a filler material other than said granular or powdery resin (I).

Abstract: This invention relates to a process for preparing free-flowing stabilizer and lubricant compositions for halogenated polymers comprising combining two or more lubricant and stabilizer components to form a mixture of powdered compounds, which mixture consists at least partly of organic compounds and lubricants and stabilizers solid at room temperature, and intensely fluid-mixing said mixture together with from about 0.2 to 5 parts by weight, per 100 parts by weight of the mixture, of an organic lubricant for halogenated polymers that is liquid at room temperature, the process being carried out so that melting or softening of the powdered compounds does not occur. The organic lubricant liquid at room temperature is selected from the group consisting of the 2-ethylhexyl, isononyl, isodecyl, isotridecyl, and isooctadecyl esters of 2-ethylhexanoic, isononanoic, isodecanoic, isotridecanoic, or isooctadecanoic acid or of a fatty acid having from 16 to 18 carbon atoms or a mixture thereof, such as stearic acid.

Abstract: The present invention relates to a process for the preparation of urea condensates and to their use.To prepare these urea condensates, a primary di and/or polyamine is reacted with urea, a secondary monoamine and if appropriate a polyalcohol at elevated temperatures in the presence or absence of catalysts, and the ammonia formed is separated off.These urea condensates are suitable as binder components in thermosetting surface coatings.

Abstract: Process for producing storable concentrates for producing paints containing water, undissolved, finely divided, as well as dissolved synthetic resins as paint binders, pigments, optionally paint additives and organic solvents by wet grinding in several stages, wherein(a) in a first grinding stage the undissolved synthetic resins, whereof at least 80% by weight are present with a particle size between 500 .mu.m and 20 mm, mixed with water, the solids content representing 30 to 70% by weight, based on the total mixture quantity, as well as 0 to 60% by weight of dissolved ionic synthetic resins (solids) are ground to a particle size of less than 200 .mu.m and preferably less than 100 .mu.m, and(b) 40 to 100% by weight of the dissolved ionic synthetic resins (solids) and pigments are added and the mixture is ground in a second grinding stage until 95% of all the particles have a particle size of less than 15 .mu.m.

Abstract: This invention relates to water dispersible, cathodically electrodepositable resins which are prepared by reacting chain extended polyepoxides with secondary amines. The polyepoxides have been chain extended with polycarboxylic acids. The resin is dispersible in water with the aid of a water soluble acid to provide cationic groups in the resin. Preferred crosslinking agents for the resin comprises capped isocyanates which may be either incorporated in the resin or preferably co-deposited with the resin from the coating composition bath.

Abstract: A copolyester resin having modified termini is disclosed, as well as the method for making and using that compound in subsequent reactions with epoxide curing compounds. The polymerization of the copolyester resin may include a compounding preparation stage for modifying the termini of the copolyester resin by reacting those end groups with an aromatic acid to alter the activation energy necessary to cure the modified copolyester resin with the epoxide compound upon mixing and heating of that mixture in a powder coating upon a substrate. The modified copolyester resin improves impact strength and leveling properties between 300.degree. and 450.degree. F., which is desirable for protection of the underlying substrate.