Abstract: Printing ink binders comprising a reaction product of (a) rosin, (b) .alpha.,.beta.-ethylenically unsaturated carboxylic acid-modified petroleum resin, (c) resol type phenolformaldehyde pre-condensate and (d) polyhydric alcohol, which have an acid value of not more than 30, a softening point of not less than 140.degree. C., a viscosity of a 33% by weight linseed oil solution of not less than Y by Gardner-Holdt bubble viscometer at 25.degree. C. and a tolerance to high-boiling aliphatic hydrocarbon of not less than 5. The reaction products have high softening point and high solubility to solvents, and are useful as binder resins for printing ink. The reaction products in the presence of cyclopentadiene polymer also provide excellent ink binders which have a higher softening point.

Abstract: A coating composition for thick coating prepared by adding an aggregate to a coating liquid containing 5 to 40% by weight as SiO.sub.2 of a coloidal silica and 3 to 40% by weight of dissolved and/or finely dispersed organic polymer, having an SiO.sub. 2 /M.sub.2 O mole ratio (in which M is a monovalent alkali metal atom) of at least 7, and having a viscosity lower than 100 c.p. at 20.degree. C when kept in the sealed state at 50.degree. C for 10 days.Said coating composition being especially suitable for coating of 1 - 20 kg/m.sup.2 in thickness and storable for a long period of time with an excellent stability, giving a cured coating having high water resistance, good weather resistance, high adhesive strength and no efflorescence in its surface.

Abstract: A non-fluid glyoxal composition prepared by admixing glyoxal, a water-soluble starch and water, in which the ratio of glyoxal and the water-soluble starch is in the range of about 1 : 2 to about 10 : 1 and water content is in the range of about 5 to about 40 % by weight in the composition, which is useful as a deodorant.

Abstract: A method of manufacturing acrylic fibers free from delustering in boiling water, comprises the steps of forming a spinning solution by dissolving in a solvent of acetone, acetonitrile, dimethylformamide and mixtures thereof, (a) a copolymer consisting of (1) 30 - 80% acrylonitril and (2) 70 - 20% vinyl chloride or vinylidenechloride, or (b) a tripolymer consisting of (1), (2) and (3) 3.0% or less by weight of ethylenically unsaturated monomer having hydrophilic groups, and adding one or more compound selected from the group of (1) homopolymer or copolymer of glycidyl methacrylate and (2) specific organic tin compounds, and spinning said spinning solution into a first bath consisting of 60% or less said organic solvent-water and leading said yarn in a 2nd bath consisting of 61 - 85% said organic solvent-water and then in a 3rd and more bath consisting of less than 60% said organic solvent-water and drying, drawing out and annealing said yarn by ordinary methods.

Abstract: A method of improving the physical properties, such as workability and impact strength, of ceramics, wherein particles of ceramics are coated with atactic polypropylene, subsequently formed into desired shape under compression and then sintered.

Abstract: A carbon fiber paper is obtained from a mixture of carbon fibers, pulp, organic fibers having a carbon yield of not less than 20% and a paper sheet binder in relative amounts such that the ratio of the carbon fibers to the pulp falls in the range of 40 - 90% by weight of carbon fibers to 60 - 10% by weight of pulp, the ratio of the organic fibers to the combined weight of said carbon fibers and pulp falls in the range of from 5 to 20% by weight and the ratio of the paper sheet binder to the combined weight of said carbon fibers, pulp and organic fibers falls in the range of from 5 to 50% by weight. The resultant mixture is shaped into the form of sheet to produce a mixed paper sheet, impregnated with an organic high molecular substance and baked to carbonize at a temperature of not less than 800.degree. C in an atmosphere of an inert gas.

Abstract: A blow molding method for transferring and heating deformed and one-sided wall-thickness parisons in which each heated parison is expanded in conformity with the mold after being stretched or just after being heated, with the use of a conveying device provided with a number of upright pins inserted into the parisons and adapted for continuous travel within a furnace while being rotated, the inner section of each parison being irregular and/or having a varying circumferential wall-thickness the upright pins having a section, which fits an inner section of the parison, formed at the lower part thereof and including a planar portion placed into sliding contact with a guide rail provided at an outlet of the furnace in order to relatively position the parison.

Abstract: Process for producing a water-soluble polymer comprising polymerizing an ethylenically unsaturated monomer yielding a water-soluble polymer in an aqueous medium in a polymerization vessel, characterized in that the polymerization system is maintained without stirring at least after the polymerization is initiated, the temperature of the polymerization system is permitted to rise on its own accord, and the non-uniformity of temperature distribution between the center and surroundings of the polymerization system due to the temperature rise is eliminated by heating the polymerization system from the outside.

Abstract: Aqueous resinous composition comprising an emulsion of acrylic or butadiene polymers, which is prepared by emulsion polymerization in the presence of hydrolyzed vinyl acetate-alkali metal olefinsulfonate copolymer as an emulsifier, and a water-soluble polymeric material. The composition has excellent properties, particularly improved stability and good operation efficiency, and is applicable in wide uses, for instance, as binder, adhesive, textile treating agent and molded article.

Abstract: A method of producing cyclopentene comprising the steps of depolymerizing dicyclopentadiene to produce raw cyclopentadiene; feeding the raw cyclopentadiene to a distillation tower having an upper part cooled to a temperature near the boiling point of the cyclopentadiene and an outlet maintained at 35.degree. to 60.degree. C and a lower part at a temperature of 40.degree. to 150.degree. C; thereby to produce highly pure gaseous cyclopentadiene at the top outlet and impure components having high boiling point at the lower outlet which are removed continuously; mixing the highly pure cyclopentadiene obtained thereby with hydrogen and reacting in a first hydrogenation reactor using a palladium containing catalyst, then mixing the resulting product with hydrogen and reacting in a second hydrogenation reactor with a palladium containing catalyst; cooling the resulting product and separating the liquid phase from the gas phase and recirculating the gas phase for use in the hydrogenation reactions.

Abstract: A method of effectively removing nitrogen oxides which are entrained in a gas, wherein a nitrogen oxide-containing gas is brought into contact with an aqueous solution which contains at least one ferrous salt and one sulfurous acid alkali salt to absorb the nitrogen oxides in the solution in the form of imidodisulfonic acid alkali salt, hydrolyzing the imidodisulfonic acid alkali salt to obtain a hydrolyzate-containing solution, and adding nitrous acid, nitrous acid anhydride, or nitrite to the hydrolyzate-containing solution to generate nitrogen.

Abstract: In production of chloroprene by dehydrochlorinating 3,4-dichlorobutene-1 in the presence of an aqueous solution of alkali, the mixture of 3,4-dichlorobutene-1 and the aqueous solution of alkali is heated at 85.degree. to 100.degree. C to evaporate a mixture consisting mainly of the resulting chloroprene, unreacted 3,4-dichlorobutene-1 and water rapidly, the evaporated mixture is taken out from the reaction system without subjecting to a distillation and totally condensed, the condensed reaction mixture is separated into an aqueous phase and an organic phase and then the organic phase is fractionally distilled to separate chloroprene from 3,4-dichlorobutene-1. Prior to subjecting the organic phase to the fractional distillation, if the organic phase is previously subjected to a drying means and the water content in the organic phase is reduced to a proper degree, it is possible to avoid formation of polymer of the resulting chloroprene and corrosion of the distillation column.

Abstract: An organic film capacitor element comprising a dielectric polyvinylidene fluoride film, elongated and subsequently heat treated, and an electrode foil and a method for preparing same are disclosed.

Abstract: A two stage emulsion polymerization process for preparing resins having both weather resistance and impact resistance. In the first step, there are copolymerized 100 to 80% by weight of an alkyl acrylate having alkyl containing 2 to 8 carbon atoms; 0 to 20% by weight of a monomer containing a vinylidene group copolymerizable therewith and cross-linking monomer to produce an aqueous dispersion of cross-linked copolymer having degree of swelling above 10, gel content above 80% and average particle size of 0.15 to 0.5 microns. Emulsifier in an amount of 0.05 to 1 % by weight is used. In the second step, 5 to 50 parts by weight of the solid copolymer of the cross-linked polymer of step 1 is polymerized in the presence of 50 to 95 parts by weight of a monomer mixture of at least 50% by weight of aromatic vinyl monomer and less than 50% by weight of vinyl monomer copolymerizable therewith.

Abstract: A resin having a formula of ##SPC1##Wherein each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6 is hydrogen or methyl group, each of R.sup.7, R.sup.8, R.sup.9 and R.sup.10 is hydrogen, alkyl group having 1 to 6 carbon atoms or phenyl group and X is -CN, -CONH.sub.2, -COOM or -COOR.sup.a, M being hydrogen, -NH.sub.4 or alkali metal, R.sup.a being alkyl group having 1 to 4 carbon atoms; and a method for manufacturing the same, said resin being usable as substitutes for resin and its derivatives.

Abstract: A porous carbon sheet having excellent physical properties is obtained by dispersing oxidized pitch fibers in a liquid containing at least one wetting agent having at least one hydroxyl group and a boiling point of not less than 150.degree. C, subsequently shaping the resultant dispersion in the form of a sheet, heating the sheet thus obtained at temperatures in the range of from 50 to 300.degree. C and thereafter, carbonizing the sheet in a nonoxidizing atmosphere. The oxidized pitch fibers contain 45 - 90% by weight of nitrobenzene insolubles and 55 - 90% by weight of fixed carbon and will not flow through a nozzle of 1 mm in diameter under a load of 10 Kg/cm.sup.2 at temperatures of not more than 300.degree. C. The pitch fiber has a diameter in the range of 5 to 100 .mu. and a fiber length/fiber diameter ratio of not less than 2.

Abstract: A method of removing nitrogen oxides from a gas containing nitrogen oxides and converting same to ammonium sulfate, wherein the gas containing nitrogen oxide is brought into contact with an aqueous solution which contains at least a ferrous salt and a sulfurous acid alkali salt to absorb the nitrogen oxides in the solution in the form of imidodisulfonic acid alkali salts, and the imidodisulfonic acid alkali salt is converted into ammonium sulfate by hydrolysis at a temperature higher than 100.degree. C after separation and recovery of the salt from solution.

Abstract: There is disclosed a method wherein sulfur dioxide contained in combustion exhaust gas is absorbed in an aqueous alkali sulfite solution to produce a corresponding alkali bisulfite and the resultant aqueous alkali bisulfite solution is added with calcium carbonate to form calcium sulfite, the method comprising wet-powdering the calcium carbonate into a particle size within a range of 0.1 - 30 .mu. in a slurry form by the use of a part of a filtrate which is obtained by separating calcium sulfite from the reaction solution, and re-using the remainder of the filtrate as an aqueous alkali sulfite solution for absorbing sulfur dioxide, whereby substantially no waste water is discharged out of the reaction system and sulfur dioxide can be recovered in the form of highly pure calcium sulfite.

Abstract: This invention relates to a method for preparing acetyl chloride by reacting 1,1-dichloroethane with chlorine and oxygen under the irradiation of light.

Abstract: A method for the preparation of a porous carbon molding having a low apparent density, the method comprising the steps of thermally mixing a pitch, which has a softening point of 50.degree. - 350.degree. C, a carbon content of 80 - 97 wt%, a hydrogen/carbon ratio of 0.3-2.5 and a nitrobenzene-insoluble fraction of below 60 wt%, with at least one aromatic hydrocarbon having a boiling point of 200.degree. C or higher, forming the mixture into a suitable shape, immersing the formed material in a solvent, in which the pitch is hardly soluble but the aromatic hydrocarbon is easily soluble, for extracting the aromatic hydrocarbon from the formed material and obtaining a porous pitch material, oxidizing the porous pitch material at a temperature from room temperature to 400.degree. C by the use of an oxidizing agent to form an infusible porous pitch material, and calcining the infusible porous material in an inert atmosphere at a temperature higher than 600.degree. C to obtain a porous carbon material.