Abstract: Improved correction fluid for obscuring indicia on sheet material. Such fluid, which normally comprises a solution of pigmented thermoplastic resin, is rendered capable of obscuring typed, xerographically copied, or written ink indicia by using a solvent system having a refractive index of 1.410 or less. A preferred non-flammable system includes 20-40 volume percent 1,1,2-trichlorotrifluoroethane and correspondingly 80-60 volume percent heptane.

Abstract: This invention relates to a pigment suspension usable for film coating tablets and the like, comprising lake pigment particles, a polymeric colloid, a viscosity lowering agent, which permits a higher concentration of pigment particles in the pigment suspension, and an aqueous solvent. A typical pigment suspension comprises a lake pigment, titanium dioxide, a natural gum, sodium tartrate, and water.

Abstract: There is provided hereby a coloring composition having an excellent water resistance and solution stability, which comprises a reaction mixture of(a) a vinyl compound soluble in water or in a water soluble organic solvent, with(b) a compound which contains more than two groups having a active hydrogen, at least one group of which is an amino group or imino group,in the presence of a water soluble dye and optionally a solvent.

Abstract: Aqueous printing ink vehicle and ink compositions are disclosed, which are based on sulfated or sulfonated organic compound binders or non-ionic pigment binders.

Abstract: Improved diarylide yellow pigment compositions having high color strength. The compositions are manufactured by modifying tetrazotized 3,3'-dichlorobenzidine with a solution of about 3 to about 5 mole percent of a first acetoacetarylide, followed by coupling into a second acetoacetarylide such as acetoacetanilide.

Abstract: An aqueous ink composition for ink-jet recording comprising an aqueous solution of a water-soluble dye of formula (I) and a humectant dissolved in water: ##STR1## wherein Ar represents an unsubstituted or substituted phenyl group, or an unsubstituted or substituted naphthyl group; X represents a hydroxyl group, an alkoxy group, a halogen atom, an alkylamino group, a hydroxyalkylamino group, a cyclic amino group or an anilino group; M represents hydrogen, K, Na, Li, NH.sub.4 or an organic amine cation; and n is an integer of 1 or 2.

Abstract: An improved asphaltic cement particularly suited for paving applications and a method for producing same are described. The asphalt comprises between about 80 and about 99 wt. % of a residuum having a viscosity of at least 6000 poise at 60.degree. C. and about 1 to about 20 wt. % of a fatty acid.

Abstract: A waterbase coating composition for use in protecting the threads of metal studs during automotive production line phosphating, electrostatic painting and welding. Composition also provides controlled lubricity as well as even torque during the tightening sequency of fasteners by robotics.

Abstract: A process for the preparation of a mixed-phase pigment based on iron oxide and chromium oxide by heating a mixture of the oxides, hydroxides or oxide hydroxides of iron and of chromium at from 600.degree. to 1100.degree. C. and then comminuting the product and working it up in a conventional manner. The essential feature of the invention is that a mixture of transparent .alpha.-iron oxide having an orthorhombic bipyramidal crystal structure and a chromium(III) hydroxide, which has been applied onto the transparent iron oxide by precipitation with an alkali, preferably sodium carbonate, is heated.The pigments according to the invention give deep colorations and are readily dispersible.

Abstract: Diarylide yellow pigment compositions comprising the reaction product of tetrazotized 3,3'-dichlorobenzidine coupled into an acetoacetarylide, and, a ketimine formed by the reaction of a primary amine and an acetoacetarylide. The ketimine-containing diarylide yellow pigment compositions have improved color strength, improved transparency and contain essentially no free primary amine. Printing inks manufactured with the diarylide yellow pigment compositions of this invention have increased color strength, increased transparency, decreased degradation of publication gravure ink vehicles and decreased acidic fountain solution emulsification in offset ink printing processes.

Abstract: The hydrogels consist essentially of the polyurethane of polyoxyethylene. The crosslinking is carried out by a reaction of a polyfunctional isocyanate with the polyoxyethylene in solution in a non-aqueous solvent. Transparent hydrogels are obtained, having a high swelling ratio in the presence of water and good mechanical properties.

Abstract: A novel 6-tetrahydrofurfurylaminofluoran compound useful as a color former (precursory colorant) for a heat-sensitive recording sheet is of the formula (I): ##STR1## wherein R.sub.1 is H, C.sub.1-8 alkyl, tetrahydrofurfuryl, phenyl alkyl(C.sub.1-5)phenyl, or C.sub.3-8 cyclic alkyl, R.sub.2 is H, Cl, F, C.sub.1-5 alkyl, C.sub.1-5 alkoxy, C.sub.2-10 alkoxyalkyl, phenyl or benzyl, and R.sub.3 is H, Cl, F, C.sub.1-5 alkyl and C.sub.2-7 acryl.

Abstract: Dispersant salt compositions are made by reacting phosphorus-free carboxylic solubilizers with sulfonic acid-free organic acids or mineral acids. The carboxylic solubilizer can be made by the reaction of a polycarboxylic acid acylating agent having at least one hydrocarbon-based substitutent of at least 8 to 500 carbon atoms with at least one poly(alkyleneamine). The dispersant salts have good thermal stability when mixed with a surfactant or a hydrophilic organic solvent. The compositions can be used with aqueous solutions to disperse various fillers including carbon black, as well as to solubilize various fluids.

Abstract: When a transferred image is formed on a plain paper by the use of a colorless backcarbon paper coated with an alcohol-based flexographic ink composed essentially of (A) microcapsules whose core substance is an oil droplet containing an electron-donating organic color former, (B) microcapsules whose core substance is an oil droplet containing an electron-accepting organic color developer, (C) a binder resin and (D) a solvent composed mainly of a lower alcohol of 1 to 3 carbon atoms, the density of the transferred image is improved by adding an appropriate amount of a wax to the core substance(s) of either or both of the above microcapsules (A) and (B).

Abstract: Formaldehyde adducts of amines, polyamines and amides conforming to the general formula ##STR1## are employed in asphalt compositions in order to improve the overall adhesion between the asphalt and aggregate or glass fiber or glass fiber mesh and to thereby increase the tensile strength of the asphalt composition.

Abstract: A coating composition for use to produce heat-sensitive record material is produced by admixing and heating at least one colorless chromogenic material or acceptor and at least one heat fusible material having a melting point within the range of 60.degree. C. to 200.degree. C. to form a co-melt, atomizing the co-melt with a spray nozzle to form finely divided particles comprising the colorless chromogenic material or acceptor and the heat fusible material, and preparing a coating composition including said finely divided particles dispersed therein.

Abstract: The invention relates to a silk screen printing paste which is provided according to the thick-layer technique and is to be fired in a non-oxidizing atmosphere and which comprises a mixture of a vitreous passive component and a permanent binder, an active component and a temporary binder, characterized in that it also comprises one or more lead oxide(s) having a degree of oxidation higher than 2 in a quantity below 20% by volume.The invention also relates to hybrid circuits manufactured by means of said paste.Application: hybrid micro-circuits.

Abstract: A recording liquid comprises a recording agent, water and a water-soluble organic solvent as essential components, wherein said recording agent comprises at least one of the dyes represented by the formula (A) shown below: ##STR1## (wherein [Ph] represents a phthalocyanine skeleton at the center of which a metal atom may be coordinated, X represents an alkali metal or NH.sub.4, a and b each independently represent an integer of 1 to 3 satisfying the relation of 2.ltoreq.a+b.ltoreq.4, Q represents a group --SO.sub.2 OR.sub.1 or a group --SO.sub.2 NR.sub.2 R.sub.3, where R.sub.1 represents an alkyl or an alicyclic group having not more than 15 carbon atoms which may be branched or an aralkyl group having not more than 15 carbon atoms, R.sub.2 and R.sub.3 each independently represent a group --CH.sub.2 CH.sub.2 O).sub.n R.sub.4, a group --CH.sub.2 CHOH).sub.n R.sub.

Abstract: Heat-sensitive composition containing (1) at least two reactants which at normal room temperature do not react with each other, but which, upon application of thermal energy, undergo a chemical change which results in change of color, and (2) a non-complexing phenolic compound which enhances the color forming reaction. This composition can be applied to a substrate, such as, for example, paper or film, in order to form a heat-sensitive imaging sheet.

Abstract: Highly pure and highly color intensive black anisometric magnetite iron oxide pigment having an FeO content of from 26 to 29% by weight and manganese content of less than 0.1% by weight, said pigment further having a specific BET surface area of from 5 to 15 square meters per gram and being needle shaped particles with an average needle diameter of 0.1 to 0.2 .mu.m and an average needle length of from 0.6 to 0.8 .mu.m are produced by producing .alpha.-FeOOH particles by alkali precipitation of an iron salt solution with a nuclear formation stage oxidation and a pigment growth stage oxidation followed by reduction and passivation.