Abstract: Thick-layer hybrid electronic printed circuits are formed by printing predetermined circuit pattern onto an insulating substrate by deposition of predetermined ink pattern thereupon, advantageously by silk-screening or masking, and thence baking said ink circuit pattern, and repeating the deposition/baking steps as required, the subject forming process featuring use of an insulating ink comprising a non-conductive metallic oxide extender, desirably cuprous oxide, which ink is thus either potentially conductive or potentially resistive, and the development of such conductivity or resistivity, after baking, by treating the ink pattern with a reducing agent, desirably a borohydride, as to readily and quantitatively convert said metal oxide into a conducting metal.

Abstract: Recording liquid for ink jet recording systems containing dyestuffs of the formulae ##STR1## with the substituent definitions given in the description. They form high-contrast images of high fastness to water, light and abrasion.

Abstract: Benzenepolycarboxylic acid esters, preferably phthalate or isophthalate acid esters are used as plasticizers in carbon/pitch mixes used in the production of extruded carbon and graphite electrodes.

Abstract: The method of producing a toughened, mar-resistant floor film includes the steps:(a) applying to the floor surface a polish containing a cross-linking agent selected from the group that consists essentially of methylated melamine and sodium benzoate, and(b) dry buffing said surface to heat the polish and surface and produce cross-linking of the cross-linking agent within the film and with the floor surface.

Abstract: A composition for polishing a plastic product, a layer of non-electrolysis nickel plating, an alumite layer or an aluminum product comprises water, a polishing agent of aluminum oxide and a polishing accelerator of nickel sulfate, and is neutral or weak acid.

Abstract: The product of the reaction of a metal resinate and an amine-reactive polyamide is useful as the vehicle of publication gravure printing inks, resulting in prints that have superior properties such as holdout, gloss, and color developement.

Abstract: Stable, isotropic gels which can be readily redispersed/reconstiuted into fluid emulsions, as such providing useful carriers for a wide variety of substances having little or no solubility in water, e.g., some types of drugs, are prepared by centrifuging an emulsion comprising a substantially oleophilic, hydrophobic liquid component constituting the dispersed phase in a substantially aqueous liquid component containing an emulsifying amount of emulsifying amount of emulsifying agent which is soluble therein at its level of concentration but which is substantially insoluble in the oleophilic, hydrophobic component, the emulsion being devoid of gelling agent, to separate the emulsion into a gel phase containing substantially all of the oleophilic, hydrophobic component of the emulsion and a clear aqueous phase.

Abstract: A process for the preparation of 4,4',7,7'-tetrachloro-thioindigo pigment which comprises treating a finely divided crude 4,4',7,7'-tetrachloro-thioindigo pigment in anhydrous form at temperatures of from 50.degree. to 180.degree. C. with a nitroaromatic substance which is volatile in steam and has a melting point of 50.degree. C. or below under normal conditions.

Abstract: A recording liquid comprising a liquid composition containing a disperse dye is provided in which the purity of the disperse dye is 90% or higher. The recording liquid is useful for an ink jet recording system.

Abstract: An erasable ball-point pen ink is disclosed. The ink is comprised of a rubber component, a volatile solvent, a pigment and a nonvolatile solvent, which additionally contains finely divided powders of an inorganic compound which is inactive to other ink components contained therein; a semisolid substance; a soft solid substance having a melting point of not more than 130.degree. C.; a combination of finely divided powders of an inorganic compound inactive to other ink compositions contained therein and a semisolid substance; or a combination of finely divided powders of an inorganic compound inactive to other ink composition contained therein and a soft solid substance having a melting point not higher than 130.degree. C. The ink can be used in a ball-point pen to make it possible to write fine letters and is capable of maintaining highly stable ink traces over long distances compared with presently available ball-point pen inks. The traces produced are even and show good intensity.

Abstract: Dispersions of titanium dioxide pigments with improved long-term resistance to pigment settling and precipitation are disclosed. The pigment dispersions are formed by chemically grafting vinyl and/or acrylic polymers to nitrocellulose in dispersions of nitrocellulose and titanium dioxide pigments. Nitrocellulose forms a loose association with titanium dioxide in dispersion. The chemical grafting improves the precipitation and settling resistance of nitrocellulose, and thus the precipitation and settling resistance of the associated titanium dioxide.

Abstract: Improved iron blue pigments and a process for the production thereof whereby the basic ferrous sulfate-ammonium or potassium sulfate-alkali metal ferrocyanide reaction is modified by the addition of zinc ions so as to alter the chemical composition and improve the performance characteristics of the resulting iron blue pigment.

Abstract: A carbonless paper solvent, a method of solubilizing a chromogenic material, and a recording sheet, all utilizing triisopropyltoluene, are the subject of the present invention. Triisopropyltoluene may be obtained by the alkylation of toluene and the resulting product will normally contain the 2,3,5, the 2,4,5 and the 2,4,6 isomers. The triisopropyltoluene may be combined with other known dye solvents such as alkylated naphthalenes, diarylmethanes and alkylated biphenyls to present a carbonless paper solvent or it may be utilized alone. The triisopropyltoluene will normally be present in a quantity of at least 40% by weight of the total solvent. A recording sheet may be formed by a paper which is coated with a continuous layer of microcapsules containing chromogenic marking material and a solvent comprising triisopropyltoluene.

Abstract: Diarylide yellow pigment compositions which are sulfonated with 2,2'disulfobenzidine and/or p-sulfo-acetoacetanilide are rendered hydrophobic by treatment with specific quaternary ammonium salts. The pigment compositions are easily flushed into flushed bases. When incorporated into printing inks, the pigments demonstrate improved color strength and transparency.

Abstract: A process for isolating or recovering a polymer in the form of particles or powder from a solution thereof which comprises admixing a solution of the polymer in a substantially water-immiscible organic solvent with an aqueous solution of a water-soluble polymeric dispersing agent, and distilling away the organic solvent from the mixture in the form of a dispersion.

Abstract: A dark or black print article is ink-jet printed with a white ink composition comprising at least a white pigment having a particle size of less than 3 .mu.m, a solvent and a binder resin with a good print stability. The white ink composition has a good dispersion stability, a good redispersability, and no nozzle clogging.

Abstract: A color-changeable cement composition for dental use is disclosed, which comprises a first component comprising a metal oxide as a major ingredient, and a second component which can react with the first component to form a set body, wherein the composition contains a substance which changes its color tone with the change in pH so that the color tone of the cement composition can change upon intital setting of the cement composition. The composition enables one to visually observe the degree of setting of the cement composition.

Abstract: Polyol compositions containing siloxane mould release agents, the latter being stabilized by a poly (ethyleneoxide) surfactant, useful in RIM processing of polyurethanes.

Abstract: Novel compositions are prepared by reacting methyl substituted nitrogen-containing aromatic heterocyclic compounds such as 2,5-dimethylpyrazine or 2,4,6-trimethylpyridine and an aldehyde such as 1-dodecanal or ketone such as 5,7-dimethyl-3,5,9-decatrien-2-one in the presence of a suitable catalyst such as zinc chloride. These novel compositions are useful as oil and gas well corrosion inhibitors.

Abstract: Coal-aqueous mixture having high solids content and excellent stability are provided by an improved process involving selective mixing and other conditions.