Showing papers on "Coating published in 1972"

Lithographic printing plates and photoresists comprising a photosensitive polymer

Abstract: Photosensitive coating materials comprising polymers containing o-nitrocarbinol ester groups, particularly of polymers and copolymers of o-nitrocarbinol esters of ethylenically unsaturated carboxylic acids, which as a result of exposure become soluble in an alkaline solvent used as developer in which they were not soluble prior to exposure. Such materials are used in particular for coating lithographic printing plates and as photoresists.

Heat and moisture activated savory coating system for popcorn

Abstract: Unpopped popcorn is placed in a container such as a collapsed bag together with an edible coating which coats the popcorn as it pops to provide a savory coating or glaze such as a caramel corn glaze, a cheese coating, a pizza flavored coating, etc. The coating consists essentially of a hydrophillic and or thermoplastic film former, fat and preferably salt for flavoring. The hydrophillic film former may include hydrolysates of corn starch, molasses or other amorphous sugar or other carbohydrate or gum which is converted to a film upon exposure to moisture. A flavoring such as molasses, powdered cheese or cheese flavoring or combination of herbs in the case of a pizza flavored corn is dispersed in the film former. Upon being popped the flavored coating becomes distributed over the outer surface of the popped kernels.

Process for coating metals

Abstract: Acidic aqueous coating compositions containing an organic coating-forming material form coatings on metallic surfaces which are immersed therein. The thickness or weight of the coating formed by the coating composition is a function of the time the metallic surface is immersed in the composition. The resulting coatings have adhesion properties thereby providing an adherent base to which other coatings, for example, paint primers and/or final finish paints can be applied.

Method of forming optical waveguide fibers

Abstract: A method of forming an optical waveguide by first forming a coating of glass with a predetermined index of refraction on the outside peripheral wall surface of a glass cylinder having a different predetermined index of refraction. The glass cylinder and glass coating combination is then heated and drawn to reduce the cross-sectional area and form a clad optical fiber where the core is formed from the glass cylinder and the cladding is formed from the glass coating.

Process for producing a corrosion resistant duplex coating

Abstract: A process for producing a corrosion resistant duplex coating having a metallurgically sealed undercoat, said undercoat being obtained by plasma depositing two or more materials onto a substrate in a substantially unreacted state so that when the coated substrate is heat treated in a non-oxidizing atmosphere, reaction/diffusion will occur between the materials thereby forming a metallurgically sealed undercoat securely bonded to the substrate and to a primary overcoat.

Methods of coating and surface finishing articles made of metals and their alloys

Abstract: Articles made of ferrous, non-ferrous and light metals and alloys thereof, e.g., aluminum, beryllium, magnesium, molybdenum, steel, tantalum, titanium, tungsten, vanadium and zinc and their alloys, are pretreated before coating and surface finishing in an anhydrous, inert, aprotic liquid, and subsequently electroplated with aluminum, cadmium, indium or zinc in an aprotic organo-metal electrolyte essentially free of molecular oxygen and water and, optionally, additionally finished by anodizing, chemical oxidation or diffusion. The pretreatment may be by erosion with finely-divided abrasive particles suspended in such liquid and impinged upon the surface of the article by hydraulic jetting, or with an aprotic liquid by the liquid-drop erosion method. Alternatively, the pretreatment may be by electrolytic action in a circuit where the article serves as the anode and is immersed in an anhydrous, aprotic electrolyte. Articles so pretreated and electroplated are thereafter more readily surface-finished or mechanically shaped.

Protective coatings for magnetically codable credit card

Abstract: The magnetically encoded stripe of a plastic credit card is protected from abrasion and wear by precisely coating the stripe in a manner which does not adversely affect the readability of the magnetically encoded stripe. The coating is a vinyl polymer such as polyvinylchloride applied in a thickness of about 0.1 mills. The polymer is suspended or dissolved in a carrier liquid which is a substantial non-solvent for the material of the magnetic stripe on which it is applied. The magnetic stripe is pre-coated and then applied to the credit card.

Exhaust gas catalyst support

Abstract: A thermally stable and attrition resistant catalyst support consisting essentially of an alumina coating on an inert substrate. The alumina coating has a rare earth metal oxide substantially uniformly distributed throughout. Catalyst compositions utilizing this support, processes for preparing both support and catalyst, and a method of treating internal combustion engine exhaust gases and preventing crystallization of alumina are disclosed. Catalysts consisting essentially of an alumina matrix containing rare earth metal oxide and a catalytic metal oxide are also disclosed. The atom ratio of rare earth metal to aluminum in the support is 1:5.7-25. The atom ratio of catalytic metal to rare earth metal to aluminum in the catalysts is 1:0.8-1.4:8-20.

Apparatus for bonding thermoplastic materials and products thereof

Abstract: This invention relates to the bonding of thermoplastic material, and more particularly to apparatus for forming corrugated paperboard by firstly applying a coating or film of thermoplastic material to the surfaces to be bonded and then heating the thermoplastic material by the direct application of an open flame to the thermoplastic surface. The open flame heats a surface layer of the thermoplastic material to render it bondable with the other element of the laminate. The disclosure also relates to an apparatus including means for supplying, corrugating and bonding coated paper to form corrugated paperboard, and to apparatus for uniting the paper and holding it together while the bond harden.

Vibration damping coatings

Abstract: Nickel, cobalt, aluminum, iron-nickel, molybdenum, and titanium alloy articles are provided with a plasma sprayed coating for increasing the vibration damping capacity thereof. The coating consists of a outermost layer portion formed of an oxide ceramic or refractory carbide and an intermediate portion formed of a mixture of one of the above alloys and the material forming the outermost layer. In the preferred embodiment, the intermediate portion consists of two or more discrete layers, with the layers having decreasing alloy content and increasing oxide ceramic content toward the outermost layer portion.

Coating, Mechanical Constraints, and Pressure Effects on Electromigration

Abstract: The effect of the mechanical constraints exerted by coatings upon electromigration in thin films is evaluated on the basis of known pressure effects upon diffusion.

Cutting blades made of or coated with an amorphous metal

Abstract: Metal alloys in an amorphous state are employed in the fabrication of cutting implements such as razor blades or knives. The implement may be formed from the amorphous metal or a coating of the amorphous metal may be applied. Such products may be formed from a ribbon of the amorphous metal alloy which has been prepared by quenching the molten metal or by coating the amorphous metal alloy on a suitable substrate such as by a sputtering procedure or vapor, chemical or electro-deposition of the alloy on the substrate.

Continuous form computer print-out document protection system

Abstract: A method of safeguarding the amount and/or signature of negotiable instruments such as a check or similar document from fraudulent alternation or forgery by providing a pressure transfer coating for application to the document to be protected during amount printing and/or signing thereof comprising a pressure sensitive tape having a release coating, a polyester or acrylic coating including fluorescent, colorless pigment and an amorphous silica, and a strata having a design with a brilliantly colored daylight fluorescent ink and a waxy-type coating thereon. The latter three strata are pressure released from the tape and transferred to the document over the amount or signature area to be protected, and then heated so as to cause penetration of the wax-like layer and deeper penetration of the amount indicia into the document fibers.

Manufacture of dormant pellet seed

Abstract: This invention is directed to a plant seed having a coating thereon, said coating being of a non-elastomeric material, such as a polymer, said material in film form permitting oxygen transmission sufficient for normal respiration of the seed and having a controlled permeability to water and an elongation to breaking less than about 200 percent and said coating being of a thickness that it will control the water imbibition of the seed to the extent necessary to delay germination until environmental conditions are satisfactory to continued crop growth.

Radiation curable coating compositions

Abstract: Coating compositions comprising a liquid vehicle, a colorant and a photosensitizer containing the structural group

Abrasive particles encapsulated with a metal envelope of allotriomorphic dentrites

Abstract: Abrasive particles are improved in function by encapsulating them with a metallic envelope; preferably the envelope is made of a pure metal in dendritic crystalline form. Desirably the abrasive substrate is placed in contraction by the envelope which is heat shrunk onto the abrasive substrate. The preferred method is to deposit the metal on the substrate at an elevated temperature by contacting a vapor of the metallic compound with the substrate particle under reducing conditions. The preferred primary abrasive is a diamond, and it is preferably etched before coating. Superior formed abraders may be formed by metal bonding such encapsulated abrasives with a metal matrix which forms a continuous phase in which the abrasive particles may be positioned. The encapsulated abrasive particle may form the primary abrasive together with a secondary abrasive which is not as hard as the primary abrasive and which may or may not be encapsulated with a metal. The primary and secondary abrasive may in one form of the abrader be distributed in the continuous phase metal binder forming the matrix.

Selective reflecting metal/metal oxide coatings

Abstract: 1. A TRANSPARENT ARTICLE OF MANUFACTURE FOR THE SELECTIVE REFLECTANCE OF RADIATION OVER AN EXTENDED SPECTRAL RANGE COMPRISING, INCOMBINATION: (A) A GLASS SUBSTRATE; AND (B) AT LEAST TWO COATING LAYERS AFFIXED TO AT LEAST ONE SAID OF GLASS SUBSTRATE: (1) A TRANSPARENT METAL COATING LAYER CONSISTING ESSENTIALLY OF NICKEL SUBSTANTIALLY IN ITS REDUCED METALLIC STATE AFFIXED TO A SURFACE OF SAID GLASS SUBSTRATE; AND (2) A TRANSPARENT METAL OXIDE COATING LAYER HAVING A THICKNESS OF FROM ABOUT 50 TO ABOUT 1500 ANGSTROMS CONSISTING ESSENTIALLY OF COPPER OXIDE AFFIXED TO SAID METAL COATING LAYER.

Closed container with desiccant coating on inside surface thereof

Abstract: Good desiccant coatings can be obtained on the inside surface of a closed container such as glass, ceramic, plastic or metal by applying thereto a nonparticulate, thin film about 10 microns thick consisting essentially of aluminum monohydrate, alumina, silica or oxides of titanium, zirconium, thorium, magnesium and calcium or combinations thereof dispersed in an aqueous medium and activating said coating by heat or vacuum.

Sintered cemented carbide body coated with two layers

Abstract: A sintered hard metal body (e.g., a cutting insert) is provided as to wear resistance by depositing thereon an intermediate thin coating of a metallic carbide or metallic nitride free from binder metal and applying over this intermediate coating a thin ceramic coating free from binder metal.

High-temperature, wear-resistant coating

Abstract: A high-temperature, wear-resistant coated article, and a process for making it, comprising a substrate having a coated layer of metal oxide particles, such as Al2O3, substantially uniformly dispersed in a metal alloy matrix wherein said alloy comprises essentially at least one first metal selected from the group of iron, cobalt and nickel, and at least one second metal selected from the group of aluminum, silicon and chromium.

Method for applying an inorganic titanium coating to a glass surface

Abstract: An inorganic titanium coating believed to be a titanium oxide coating is applied to a glass surface by exposing the surface at elevated temperature, desirably at least 300*F, to a liquid comprising a titanium oxychloride of the formula Ti(OH)xCl(4 x) wherein x is 1, 2 or 3, for example an aqueous solution of a titanium oxychloride The process is especially useful for providing the ''''hot end coating'''' of a dual protective coating for glass containers comprising an inorganic ''''hot end coating'''' and a lubricious organic ''''cold end coating''''

Gelled coating compositions and method of making same

Abstract: Coating compositions in the form of a gel capable of being broken up for application to a suitable substrate by application of a relatively small shearing force at a relatively small shearing rate. The coating composition of this invention employs a rheological control system comprising an amine-modified montmorillonite clay, a swelling agent therefore, and a nonvolatile oleaginous agent for wetting the clay. The invention is particularly adapted for pigment-containing coating systems.

Color film coating of tablets and the like

Abstract: A pigment suspension for a film coating for tablets and the like comprising a solvent, pigment particles dispersed in the solvent, and a low molecular weight alcohol soluble polymer which acts as a protective colloid coating the pigment particles and providing for a higher concentration of pigment particles in the pigment suspension. The method of making the pigment suspension comprises the steps of pouring a solvent into a container, stirring the pigment particles into the solvent to disperse the pigment particles evenly, stirring a protective colloid into the liquid in the container and dispersing it therethrough to make the liquid less viscous and more adaptable for accepting additional pigment particles, and stirring additional pigment particles into the container liquid to obtain the desired pigment suspension. A coating suspension for tablets and the like comprising the pigment suspension dispersed in a polymer solution. The method of making the coating suspension includes dispersing a powdered polymer in a first liquid solvent, stirring a second solvent into the liquid until all of the polymer is in solution, and stirring the pigment suspension into the polymer solution. A coated tablet and the like having as the coating material in a thin film comprising a polymer having pigment particles dispersed therethrough, and a protective colloid coating the pigment particles.

Anodic discharge of chloride ions on oxide electrodes

Abstract: The behaviour of a mixed oxide coating thermally deposited on titanium has been examined with respect to the anodic discharge of chloride ions.

Agents for the manufacture of non-stick coatings

Abstract: A NON-STICK COATING COMPOSITON COMPRISING (1) ORGANOPOLYSILOXANES HAVING SILICON BONDED VINYL GROUPS AS THE TERMINAL UNITS, (2) ORGANOPOLYSILOXANES HAVING AT LEAST 3 SILICON BONDED HYDROGEN ATOMS PER MOLECULE AND (3) A CURING CATALYST OBTAINED FROM THE REACTION OF CHLOROPLATINIC ACID AND KETONE. THE COMPOSITION MAY BE APPLIED TO ANY SOLID SURFACE AND CURED AT AN ELEVATED TEMPERATURE TO FORM A NON-STICK COATING THEREON.

Process for increasing the resistance to wear of the surface of hard metal cemented carbide parts subject to wear

Abstract: A process for increasing the resistance to wear of the surface of hard metal parts subject to wear, such as the cutting blade of cutting tools, by coating the surface of the hard cemented carbide articles with a layer of refractory oxide such as aluminium oxide, ziroconium oxide or stabilized zirconium oxide in a thickness of up to 20 microns.

Apparatus for production of photographic elements

Abstract: In the manufacture of photographic elements, such as photographic film or paper, apparatus for coating the support by forming a free-falling vertical curtain of liquid photographic coating composition in such manner that the curtain is stable and has a uniform flow rate across its width and directing the support so that the free-falling curtain impinges thereon, while maintaining a controlled relation between the flow rate and the speed at which the support is moved, to form a thin layer of the coating composition on the face of the support. Such apparatus includes means for advancing the support at the desired speed and a hopper for the coating composition which is provided with a downwardly inclined slide surface down which the coating composition flows by gravity, the slide surface terminating in a lip spaced vertically above the moving support from which the coating composition flows as a free-falling curtain.

Process for forming external multi-layer resinous coating on cylindrical surface at ambient temperature

Abstract: A process for forming multi-layer resinous coating comprising applying flowable heat softened resinous material directly to the external surface of a rotating cylindrical pipe at ambient temperature.

Blends containing polyethylene and an unsaturated polycarboxylic acid modified polyolefin

Abstract: Blends containing polyethylene having good adhesion and coating properties are obtained by preparing a blend of polyethylene and modified polyolefins. These blends have good melt stability, good color and good adhesion to paperboards and inks and find particular use in curtain coating operations. These blends are also good hot melt adhesives.

Pigment dispersions and use thereof

Abstract: A fluid dispersed suspension of clay or other negatively charged pigment or filler is produced by adding the pigment or filler to water in the presence of the combination of a nonionic surface active agent and a cationic surface active agent at an alkaline pH. The resulting suspension may be incorporated into cationic media, e.g., a solution of cationic starch, protein adhesive or cationic latex, to produce improved paper coating compositions. The suspension may be incorporated into a solution of a cationic resin to produce a conductive coating for electrographic reproduction paper. Improved optical performance and printability are obtained when the suspension is employed in the production of a filled paper product.