Abstract: Disclosed is a color-developer for pressure-sensitive recording sheets, comprising a co-condensate of a reaction intermediate of a p-substituted phenol and a trifunctional or higher phenol, or a polyvalent metal salt of said co-condensate, said reaction intermediate being obtained by the reaction of said p-substituted phenol under acidic conditions with formaldehyde or a substance capable of generating formaldehyde.

Abstract: Disclosed is a pressure sensitive recording unit which comprises a single base web sheet and a methine-type dyestuff and an organic oxidizing compound both supported on the single base web sheet, or a combination of first and second base web sheets and the methine-type dyestuff and organic oxidizing compound supported individually on the first and second base web sheets. Such a recording unit includes for example a pressure sensitive recording unit formed in combination of (a) a back-coated topsheet (CB-sheet) making use of microscopic capsules containing a solution obtained by dissolving a methine-type dyestuff in a solvent having a high boiling point and (b) a front-coated undersheet (CF-sheet) carrying an organic oxidizing compound coated thereon. Also disclosed is a pressure sensitive recording unit which includes a base web sheet carrying thereon such a methine-type dyestuff together with a metal ion sequestering agent and/or alkanol amine.

Abstract: In a laminated multilayer structure composed of (A) a layer of a graft-modified ethylene resin grafted with an unsaturated carboxylic acid or a functional derivative thereof and (B) an oxygen- or nitrogen-containing polar resin layer or a metal layer in contact with the layer (A); the improvement wherein (1) the layer (A) consists of (i) 1 to 100% by weight of said graft-modified ethylene resin derived from an ethylene polymer which contains 0 to 15 mole % of at least one alpha-olefin having 3 to 30 carbon atoms as a comonomer and has an MI.sub.2 /[.eta.].sup.-8.77 ratio in absolute value of not less than 15 and a density of 0.88 to 0.98 g/cm.sup.3, and (ii) 99 to 0% by weight of an unmodified ethylene polymer containing 0 to 50 mole % of at least one alpha-olefin having 3 to 30 carbon atoms as a comonomer and having an MI.sub.2 /[.eta.].sup.-8.77 ratio in absolute value of not less than 15 and a density of 0.86 to 0.96 g/cm.sup.

Abstract: In preparing a resin coated sand for use in sand mold casting processes by a hot-melt process using an unsaturated polyester which is solid at room temperature as the coating material, a solution of an organic peroxide as a polymerization initiator for the unsaturated polyester is introduced into the mixture of heated foundary sand and the unsaturated polyester while the polyester is in the state of liquid coating on the sand particles, and stirring is continued to uniformly mix the solution with the unsaturated polyester and evaporate and dissipate the solvent before solidification of the polyester coating as the result of cooling of the mixture. The polyester coating contains no liquid cross-linking agent, so that the resin coated sand is untacky and high in fluidity at room temperature and, therefore, can be filled into a die cavity to shape a sand mold or core with sufficiently high bulk density.

Abstract: A physically blended propylene polymer composition composed of(A) 100 parts by weight of crystalline polypropylene containing 0 to 10 mole % of ethylene and/or another .alpha.-olefin,(B) 1 to 30 parts by weight of a propylene/ethylene random copolymer composed of 30 to 85 mole % of propylene, said copolymer containing 0 to 10 mole % of a diene component and having (i) a micro-isotacticity of at least 0.8 and (ii) a boiling n-cyclohexane insolubles content of 0 to 10% by weight, and(C) 0 to 30 parts by weight of polyethylene containing 0 to 15 mole % of an .alpha.-olefin,said components (A) and (B) having been physically mixed with each other.

Abstract: Disclosed is a process for the preparation of polyamide compounds by reacting at least one polycarboxylic acid with at least one diisocyanate in the presence of a catalyst comprising at least one mono-alkali metal salt of dicarboxylic acid. The polyamide compounds prepared by this process have a substantially linear configuration and a high degree of polymerization and, therefore, are suitable for the manufacture of fibers, films and molded articles.

Abstract: An exhaust gas heat recovery system wherein:the system comprises an exhaust gas economizer having of heat transfer sections including a preheating section, an evaporating section and a superheating section, a feed water heater, a steam separation drum, a low pressure steam generator; and a mixed-pressure turbine;a temperature gradient of circulating water and a temperature gradient of exhaust gases are made substantially equal to each other in the preheating section of the exhaust gas economizer to prevent an exhaust gas economizer tube from being corroded by generated sulfuric acid; andlow pressure steam can be effectively utilized by use of the mixed-pressure turbine.

Abstract: A method of producing an aluminum metal from alumina, silica and iron oxide bearing materials by mixing the coal and bringing the mixtures to the temperature in the range of 600.degree. to 900.degree. C. in order to make the alumina bearing coked briquettes. Then, the coked briquettes are brought to the temperature in the range of 2,000.degree. to 2,100.degree. C. to produce aluminum, silicon and iron containing alloys. The alloys are scrubbed by molten lead spray directly after the alloys formation, and are converted to lead-aluminum alloy. An aluminum is separated from lead by liquation and purified by fractional distillation.

Abstract: A process for producing aziridine-2-carboxylic acid or its salts is provided which comprises treating an alpha-halogeno-beta-aminopropionitrile or its mineral acid salt with an alkali or alkaline earth metal hydroxide in water or in a water-containing organic solvent. In a preferred embodiment, aziridine-2-carboxylic acid or its salt is produced by treating the reaction mixture containing an alpha-halogeno-beta-aminopropionitrile obtained by reacting an alpha, beta-dihalogenopropionitrile or an alpha-halogenoacrylonitrile with ammonia, with an alkali or alkaline earth metal hydroxide in the presence of water without isolating the alpha-halogeno-beta-aminopropionitrile from the reaction mixture beforehand.

Abstract: This invention relates to a process for the selective ortho-alkylation of a phenolic compound having at least one ortho-positioned hydrogen atom by catalytically reacting the phenolic compound with an alcohol in the vapor phase. In this process, the reaction of the phenolic compound with the alcohol is carried out at a temperature of from 300.degree. to 550.degree. C. in the presence of a catalyst containing manganese oxide, silicon oxide and one or more additives selected from group (A) consisting of germanium oxide, tin oxide and lead oxide, or a catalyst containing manganese oxide, silicon oxide, one or more additives selected from the aforesaid group (A), and one or more additives selected from group (B) consisting of alkali metal oxides and alkaline earth metal oxides.

Abstract: A monoaxially or biaxially stretched film structure, or a heat-set structure thereof, of an unstretched film of an aromatic polyester of the poly-1,3-phenylene terephthalate type, said aromatic polyester having an intrinsic viscosity, determined in p-chlorophenol at 50.degree. C., of 0.4 to 2.0 and being composed of [A] polybasic carboxylic acid component units consisting of terephthalic acid units (a.sub.1) and units (a.sub.2) of a polybasic carboxylic acid other than terephthalic acid, the proportion of the units (a.sub.2) being up to 25 mole % based on the units (a.sub.1) and units (a.sub.2) combined, and [B] polyol component units consisting of resorcinol units (b.sub.1) and units (b.sub.2) of a polyol other than resorcinol, the proportion of the units (b.sub.2) being up to 25 mole % based on the units (b.sub.1) and (b.sub.2) combined.

Abstract: In a process for polymerizing olefins in the gaseous phase in a first gas-phase polymerization zone and a second gas-phase polymerization zone, which are provided independently from each other, in the presence of a catalyst composed of a transition metal catalyst component and an organometallic compound of a metal of Groups I to III of the periodic table while feeding the catalyst-containing polymer formed in the first zone to the second zone; the improvement wherein(i) a suspension zone for forming a suspension of the polymer from the first zone in an easily volatile hydrocarbon medium which is liquid under the conditions of feeding the polymer is provided in a feed passage for feeding the polymer from the first zone to the second zone, and(ii) the suspension of the polymer in said liquid medium formed in the suspension zone is fed to the second zone.

Abstract: A lubricating oil composition comprising a major proportion of a lubricating oil, and an oil-soluble graft copolymer, said graft copolymer being prepared by grafting a small amount of a grafting monomer selected from saturated esters of unsaturated monocarboxylic acids, unsaturated esters of saturated carboxylic acids and unsaturated epoxy compounds to a trunk copolymer which is substantially free from an oxygen-containing functional group and a carbon-carbon double bond determined from its iodine value and has a number average molecular weight of about 5,000 to about 100,000, said trunk copolymer being selected from copolymers of alpha-olefins having 2 to 20 carbon atoms, copolymers of styrene and alpha-olefins having 2 to 20 carbon atoms and hydrogenated products of copolymers of styrene and diolefins. A process for preparation of said composition is also provided.

Abstract: This invention relates to a process for the selective ortho-alkylation of a phenolic compound having at least one ortho-positioned hydrogen atom by catalytically reacting the phenolic compound with an alcohol in the vapor phase. In this process, the reaction of the phenolic compound with the alcohol is carried out at a temperature of from 300.degree. to 550.degree. C. in the presence of a catalyst containing manganese oxide and one or more additives selected from group (A) consisting of germanium oxide, tin oxide and lead oxide, or a catalyst containing manganese oxide, one or more additives selected from the aforesaid group (A), and one or more additives selected from group (B) consisting of alkali metal oxides and alkaline earth metal oxides. The catalyst used in this invention exhibits not only excellent catalytic activity in the selective ortho-alkylation of phenols, continuous stability of the activity, good shapeability and good mechanical strength but also effective utilization of alcohols.

Abstract: Disclosed is a process for continuously producing rubber modified styrene resins wherein the rubbery phase including a rubber-like polymer is transformed into dispersed particles by using a reactor having both a helical-blade agitator mounted in a draft tube and an auxiliary agitator, by establishing a specified agitating force and a specified degree of circulation of the fluid within the reactor, and by maintaining a specified relation between the weight percentages, based on the total amount of all components within the reactor, of the rubber-like polymer and the monomer converted to polymer. According to this process, various grades of high-impact rubber modified styrene resins having excellent surface properties can be obtained without any adhesion of rubber-like matter to the reactor and without any formation of fisheyes in final products.

Abstract: Conductive cured products which have superior initial conductivity which is substantially retained even under high temperature and humidity conditions are obtained by curing a resinous composition comprising (a) a metallic copper powder, (b) a copper compound, (c) a compound having a 1,4-dihydroxy benzene ring or 1,2-dihydroxy benzene ring structure, and (d) a resinous curable component. Additionally, inclusion of a chelate forming compound in the uncured composition prevents a curing phenomenon on the surface of the composition during storage. The compound having the dihydroxy benzene ring (compound c) reduces the copper compound (b) to deposit metallic copper, and the resinous curable component integrates the constituents into a conductive product upon curing. The compositions are used as paints, adhesives, printing inks, and moulded articles, and they are useful in the electric, electronic, automobile, and housing fields.

Abstract: An aromatic polyester amide is produced by reacting hydroxyphenyl-aminophenyl-propane with aromatic dicarboxylic acid dihalide in the presence of an inert organic solvent, and bringing the organic solvent phase containing the mixture of the reaction products of the above reaction into contact with an aqueous phase containing an acid-acceptor, whereby completing polycondensation reaction. In order to control the dissolution of water into the organic solvent phase while maintaining an adequate level of miscibility between the organic solvent phase and the aqueous phase, a neutral salt of inorganic electrolyte, such as sodium chloride, is added to the aqueous phase containing the acid-acceptor.

Abstract: In bonding molded articles of a 4-methyl-1-pentene polymer to each other or bonding a molded article of a 4-methyl-1-pentene polymer to a molded article comprised of a vinyl alcohol type polymer, metal or glass, if a solution of a modified 4-methyl-1-pentene polymer in cyclohexene and/or carbon tetrachloride is coated on at least one of the molded articles to be bonded, the adhesion strength can remarkably be improved.

Abstract: Palatinose is produced from sucrose with an immobilized bacteria containing alpha-glucosyl transferase. The bacteria is immobilized by entrapping cells of the bacteria in calcium alginate gel granules and treating the granules with polyethyleneimine and glutaraldehyde. Palatinose is efficiently produced by packing the bacteria-containing granules in a column and passing a sucrose solution through the column at high velocity.

Abstract: A dyestuff-containing microscopic capsule dispersion for record materials, which comprises at least one methine dyestuff represented by the general formula (I): ##STR1## wherein X means a phenyl, naphthyl, indolyl, .beta.-styryl, pyridyl, pyrimidyl or pyrazinyl group which may optionally be substituted, R.sub.1 -R.sub.6 are individually an amino, substituted amino, lower alkyl, cycloalkyl, lower alkoxy or lower haloalkyl group or a halogen or hydrogen atom, R.sub.7 and R.sub.