Abstract: The photochromic activity of triphenylmethane paraamino leuco salts is reversibly inactivated in compositions containing the leuco salt with certain metallic oxides or sulfides. The photochromic properties of the leuco salts are restored by the application of energy, e.g. heat, mechanical pressure, etc. The sensitive compositions containing the leuco salt and metal oxide or sulfide are useful in a process for recording information according to a predetermined pattern by applying a local heat source or local pressure source to a recording material containing a layer of the sensitive composition, the application of energy resulting in the formation of colored marks corresponding to the information to be recorded.

Abstract: Rigid-when-wet, but foldable, corrugated paperboard and process of making same by applying phenolic resin to contiguous surfaces of the outer liner, the medium, and the inner liner without substantially altering the hygroscopicity of the exposed faces of the liners, and adhering the three components together before the resin is cured.

Abstract: A test device for determining the presence of a constituent in a sample, and a method for making it are disclosed. The test device comprises reactants (e.g. reagents, enzymes, etc.) incorporated with a carrier matrix such that when the device is wetted with a test sample, the reactants and the constituent react to produce a detectable response. The reactants are positioned separately from each other on the matrix in substantially, discrete, non-contacting areas. Hence, reactants are maintained substantially separate from each other until the test device is wetted with the sample.

Abstract: This invention relates to an electrosensitive marking blank having a blushed conductive layer and a pigment containing blushed masking layer. The instant electrosensitive element has particular utility in that a relatively thin masking layer in combination with a blushed conductive layer results in a blank having improved whiteness and contrast characteristics.

Abstract: A method of enhancing the properties and appearance of polymeric substances is disclosed. The method involves treating a polymer so as to effect graft polymerization over the entire surface thereof in such a manner that variations in graft density occur across the surface of the polymer. This may be accomplished by forming chemically active species, e.g., ions or free radicals, in the polymer which vary in concentration across the surface of the latter and at least once contacting the surface of the polymer with a substance, for instance, a monomer such as a vinyl compound, which undergoes a graft polymerization reaction with the chemically active species. The chemically active species may be formed by irradiating the surface of the polymer with high energy radiation, for example, a beam of electrons. Different possibilities exist for achieving a varying concentration of the chemically active species across the surface of the polymer.

Abstract: An image producing system is provided which comprises a substrate having printed on at least a portion of a surface thereof an ink containing a neutral or substantially neutral ink vehicle, a liquid organic base and a color former, and which system also comprises a carrier material impregnated with a solutions of an organic acid in a weakly volatile high boiling solvent.

Abstract: This invention relates to an inexpensive, printed paper sheet material which has an appearance closely simulating that of foamed polypropylene. The product is prepared by coating a paper sheet with an overall coating of a pearlescent ink and then overprinting the pearlescent coating with a dilute black ink in a fine mottled pattern.

Abstract: An image producing system is provided which comprises a carrier material of fabric, paper, a felt or fabric pad impregnated with a color former solution, comprising a weakly volatile high boiling organic solvent having dissolved therein a color former and a color former deactivating substance, wherein the color former is an azo compound and a substrate which has incorporated therein or possesses at least one surface which is at least partially coated with a color former activating substance or system and a re-activating substance which counteracts the de-activating substance.

Abstract: Raised prints and graphic designs on fabrics which can safely and effectively be drycleaned and washed are provided by formulating a cross-linkable polymer printing medium with about 1 to 45 weight percent thermally expandable microspheres, applying said medium to a fabric, heating at a temperature of about 180.degree. to 250.degree. F to expand the microspheres and cross-link the polymer, and then curing for about 1 minute at a temperature of about 300.degree. F.

Abstract: A process for treating -- especially dyeing and printing -- of piece goods which includes the steps of providing the goods with a dye-containing substance, setting the dye, removing residues, and drying the goods. In this process, piece goods such as medium fluid-permeable or fluid-impermeable textile goods, carpet tiles or backed floor covering tiles and other medium fluid-impermeable flat textile goods are, in a continuous treatment procedure, first printed with the dye and/or dyed solid, immediately thereafter the dye is set by a heated gas and any residual components are washed off or out and finally the piece goods are dried.

Abstract: A paper carrier substrate, has a contrasting layer applied thereto which thereafter is aluminized; in accordance with the invention, this contrasting layer is ordinary printing ink, which has a somewhat rough surface, permitting excellent adhesion of the metallized layer. In places where no ink is applied, the metallized layer will corrode off, thus leaving non-metallized markings. The ink is preferably applied by gravure or intaglio printing on the substrate, at a speed of between 5 to 9 m/sec., the printing roller being free from etchings where markings are to appear.

Abstract: A continuous ink-transfer printing system employing a hot-melt wax imaging composition supported on a strong pressure-conforming plastic film web which is continuously recoated with fresh imaging composition to replace imaging composition which is imagewise transferred at a pressure-imaging station. The system comprises an ink-coating station, a pressure-imaging station and an ink-melting station associated with the ink-coating station.

Abstract: Compositions and method for producing chemical watermarks in finished paper products, the watermarks being produced by applying to the surface of the paper a synthetic resin composition having a chemical grouping therein capable of being insolubilized upon exposure to high frequency radiation, and thereafter exposing the resin composition to such high frequency radiation to insolubilize the resin.

Abstract: Textile fabric, a part of which has its coefficient of friction increased by application to said part of an inert, non-slump, room temperature vulcanizing silicone rubber, which rubber is thereafter vulcanized.

Abstract: A composite article suitable for forming liquid-containing paperboard cartons is made by laminating an extruded thermoplastic film to an elongated paperboard web. The film has thick and thin strips and the thick strips are laminated to the web over areas thereof which are to ultimately form the bottom portions of the cartons. Thermoplastic material is regulated within an extruder and after extrusion the film takes on a profile imparted by the regulation of the material within the extruder die.

Abstract: The invention is a process for manufacturing a sculptured decorative finish on a textile fabric by applying an aqueous polyurethane latex in a pattern to the fabric and drying the fabric; and the sculptured fabric obtained by the process.

Abstract: Disclosed is a method of duplicating and imaged master comprised of a marking material distributed in an imagewise manner upon a substrate. The method involves contacting the master with a highly viscoelastic inking composition comprising:A. a silicon containing block copolymer having polymeric silicone segments and polymeric segments of a material which is adhesive to the material comprising the image;B. a coloring agent; andC. a solvent in which the copolymer is soluble but which is a non-solvent for the marking material. The inked master is then contacted under pressure with a transfer member to thereby transfer the ink to the transfer member in imagewise configuration.

Abstract: This invention provides a method and apparatus for applying liquid to accurately defined areas of solid substrates such as paper, plastics materials and textiles. The method essentially involves the application of the substrate with appreciable pressure to a foraminous outlet disposed at the upper face of a liquid container and the subsequent removal of the substrate therefrom. Care is taken to ensure that the liquid in the container is in wetting contact with the outlet but that there is no development of an external meniscus above the outlet upper surface. In certain preferred embodiments of the invention several liquid containers are provided so that several liquids may be applied at once. The invention finds particular utility in the preparation of "color cards" such as are used for color selection of paints or cosmetics.

Abstract: A polyolefin coated photographic base paper having a silk-like textured surface is prepared by extrusion coating the polyethylene on the photographic paper and, while the polyolefin is still plastic, forming the surface of the polyolefin on an engraved chill roll. Pattern depths of 0.4 to 0.7 mils can be produced on the polyolefin surface by this process using polyolefin films as thin as one mil.

Abstract: Non-conductive real images are formed on substrates by depositing reducible metal salt compositions thereon and exposing the coated substrates to radiant energy or a chemical reducing agent to reduce the metal salt to metallic nuclei and to produce a real image of metal, which is made clearer and built up by electroless metal deposition. The metal salt composition can either be selectively deposited and then exposed, or uniformly deposited and then selectively exposed, to produce the real image.

Abstract: An electrophotographic paper based on a flat surface bond type paper is given a photoconductive coating to one side of the paper and is cockled afterward. This "post" cockling process can be done on a suitable web roll during production of the coated electrophotographic stock, or an electrographic or electrophotographic copy sheet can be cockled or embossed after imaging, toning and fixing by a conventional electrophotographic apparatus.

Abstract: A method for coloring, dyeing-in or inking absorptive, rough surface paper, particularly paper which is subsequently saturated and/or impregnated with a solution of a heat-hardenable synthetic resin and then dried and pressed on a substrate, such as, wood panels, with as thin as possible a layer of coloring agent having an optically uniform coloring, in which the paper is colored by applying a magnetic roller coloring process thereto and, before or after such coloring, the paper is printed by a copperplate intaglio printing process or a flexographic (flexo-relief) printing process.

Abstract: The invention provides a high-solids, low-viscosity, aqueous vehicle particularly adapted for use in coating cellulosic substrates under ambient conditions. The vehicle comprises a water-soluble oil with minute styrene polymer particles uniformly dispersed therein. The water-soluble oil portion comprises the reaction product of a dibasic acid or dibasic anhydride and a drying oil which is neutralized with a nitrogen base. The aqueous vehicle is especially useful in high solids, ink formulations having a high pigment to binder ratio.

Abstract: Impregnating porous material such as sealing materials by introducing a viscous liquid impregnating material under high pressure into the surface of a limited zone of said porous material.

Abstract: This invention provides a high-solids, low-viscosity, aqueous vehicle particularly adapted for use in coating cellulosic substrates under ambient conditions. The vehicle comprises a water-soluble oil with minute styrene polymer particles uniformly dispersed therein. The water-soluble oil portion comprises the reaction product of a dibasic acid or a dibasic anhydride and a drying oil which is then reacted to provide the water-soluble salt thereof with a nitrogen base. The aqueous vehicle is especially useful in high solids inks and overprint varnishes.

Abstract: Method for making sheet materials are disclosed having a layer or layers of a non-uniform thickness, in particular a method of making sheet materials tapered from a maximum thickness near one and to a minimum thickness near the opposite end; and sheet materials prepared by such methods. The preparation of photographic film assemblages is disclosed including a first sheet material including at least one photosensitive layer and a second sheet material in super position therewith, which assemblages are adapted for forming photographic images viewable as reflection prints without separation of the respective sheet materials.

Abstract: A method of applying a stable, aqueous, low viscosity resin composition to porous or absorbent materials and controlling the migration thereon which comprises: treating the porous or absorbent materials with an alkaline material to raise its pH above about 7 and give it an alkaline reserve potential; and applying to the porous or absorbent materials a stable, aqueous, acidic low viscosity resin composition having a viscosity of less than about 1,000 centipoises and an acidic pH less than about 7 and comprising from about 10% to about 60% by weight on a solids basis of a synthetic resin and from about 0.

Abstract: A process for identifying manufactured articles in which a marking agent such as a homo- or copolymer of polymerizable ethylenically unsatured monomers is applied to the articles. Said homo- or copolymer contains at least one group which can be split off to form a low molecular weight compound such as an amine or phenol, which can be converted into dyes, said dyes being used to identify the manufactured articles.

Abstract: Process for gravure or flexographic printing of flexible substrates wherein the printing vehicle comprises a dispersion of film-forming polymer particles in an inert organic liquid, the dispersion being stabilised by a defined polymeric stabiliser and being of such a composition that after evaporation of not more than 50% by weight of the organic liquid the residue is a stable dispersion which can bleed homogeneously with fresh dispersion, and wherein the polymer particles are subsequently integrated upon the substrate.

Abstract: Compositions to be applied to professional studio photographs on color paper or black and white emulsions for protective and finishing purposes comprising a vinyl resin in particulate form dispersed in methyl isobutyl ketone to which is added a blend of aromatic hydrocarbons such as naphtha and xylene, with or without a thinning or flattening agent, and a plasticizer. The compositions are also useful for preventing color changes and for making color corrections. They overcome the yellowing and other disadvantages of conventional lacquers such drying hard and cracking the photographic print.

Abstract: Methods of applying stable synthetic resin compositions to porous .[.material.]. .Iadd.materials .Iaddend.the synthetic resin composition comprising: (1) a synthetic resin; (2) a polyvalent metal complex coordination compound; and (3) a water-soluble, ionically active ammonium or alkali metal salt of an acid capable of being chemically converted into an ionically inactive polyvalent metal salt of said acid by chemical reaction and precipitation or sequestration of said polyvalent metal salt, and substantially immediately destroying the stability of the synthetic resin compositions to precipitate the resin on the porous materials under controlled migration conditions.