Abstract: Coloring fine particles produced by heating spheroidal coloring fine particles with an average fine particle diameter of 1-100 .mu.m obtained by suspension polymerization to a temperature of 30.degree. to 200.degree. C., thereby causing the particles to fuse together in a block without completely destroying the particle interfaces, and then crushing the block to substantially the same average particle diameter of the spheroidal coloring particle before melting, and a toner for developing electrostatic images using the same.

Abstract: A method of preparation of an absorbent composite in which an aqueous solution containing a water-soluble radical polymerization initiator and a water-soluble ethylenically unsaturated monomer which can be converted into an absorbent polymer by polymerization is applied to a substrate, and the monomer is polymerized while the substrate to which the aqueous solution is applied is, on both the sides, held in contact with polymerization-inert surfaces facing each other. A continuous manufacturing method includes the sequential steps of continuously passing a substrate through (1) a region applying to the substrate an aqueous solution containing a water-soluble radical polymerization initiator and a water-soluble ethylenically unsaturated monomer which can be converted into an absorbent polymer by polymerization, and (2) a region of polymerizing the monomer while maintaining the substrate, on both the sides, in contact with polymerization-inert surfaces facing each other.

Abstract: In a method for the production of a fiber-reinforced thermosetting resin molding material by a procedure of leading a mixture of a liquid thermosetting resin composition with reinforcing fibers to an impregnation apparatus and deaerating the mixture and impregnating the reinforcing fibers with the resin composition, apparatus including at least one pair of vertically opposed endless belts adapted to be driven in the directions of taking in and nipping the mixture and at least one pair of vertically opposed rollers adapted to depress the mixture across the endless belts, at least one of the opposed rollers being a flexible roller possessing elasticity.

Abstract: A silver catalyst for the production of ethylene oxide having 5 to 25% by weight, based on the amount of a finished catalyst, of finely divided metallic silver and 0.001 to 0.05 gram equivalent weight of cesium per kg of the finished catalyst carried on an .alpha.-alumina carrier having the outer surface thereof and the surface of pores in said carrier coated with amorphous silica, and a method for production thereof by supporting finely divided metallic silver and cesium and then subjecting the supported carrier to a high temperature heat treatment in an inert gas at a temperature of 400.degree. to 950.degree. C.

Abstract: This invention relates to a molding material composed of a liquid thermosetting resin composition containing styrene monomer as a cross-linking component thereof and chopped glass fiber strands which can give a large molded product having high impact strength in high productivity and a method for manufacture thereof characterized by using glass fiber strands such that the number of glass filaments used in the glass fiber strands falls in the range of 600 to 1,400 per strand, the amount of a binder deposited on the glass fibers is not less than 1.0% by weight, and the percentage of styrene monomer insoluble binder falls in the range of 40 to 90% by weight.

Abstract: A hydrophilic polymer having the water absorption capacity thereof 1 to 30 times to its own weight by a process of manufacture which comprises preparing a monomer component comprising (a) 2 to 25 mol % of a hydroxyl group-containing alpha,beta-ethylenically unsaturated monomer, (b) 5 to 30 mol % of a carboxyl group-containing alpha,beta-ethylenically unsaturated monomer, and (c) 93 to 45 mol % of a carboxylate group-containing alpha,beta-ethylenically unsaturated monomer, providing that the total of (b) and (c) is in the range of 98 to 75 mol %, radically polymerizing said monomer component, and heat-treating the resultant polymer thereby causing the hydroxyl group and carboxyl group possessed by the polymer to react with each other and form a crosslinked structure, a method for the production thereof, and uses found therefor including a cation sequestrating resin, a coolant and a coating material.

Abstract: A catalyst for purification of exhaust gas from a Diesel engine wherein a catalyst component containing (a) refractory inorganic oxide, (b) oxide of at least one element selected from the group consisting of praseodymium, neodymium and samarium, and (c) at least one noble metal selected from the group consisting of platinum, palladium and rhodium provided that palladium is never selected alone is borne on a refractory three-dimensional structure.

Abstract: In a method for the production of cyclohexanecarboguanamine by the reaction of cyanocylohexane with dicyandiamide in an organic solvent possessing a hydroxyl group in the molecular unit thereof at a temperature in the range of 90.degree. to 200.degree. C. in the presence of a basic catalyst, the improvement which comprises carrying out the reaction using 0.60 to 0.95 mol of dicyandiamide per mol of cyanocylohexane in an atmosphere substantially incapable of producing any effect of oxygent.

Abstract: A method for the production of a 1,3-thiazolidin-2-one represented by the general formula II: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, and R.sup.4 are independently hydrogen atom or a lower alkyl group, which method comprises causing a 1,3-thiazolidine represented by the general formula I: ##STR2## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 R.sup.5, and R.sup.6 are independently hydrogen atom or a lower alkyl group to react with urea.

Abstract: The present invention discloses a ceramic precursor composition, comprising (A) 100 parts by weight of at least one fine ceramic powder selected from the group consisting of zirconia and alumina and having an average particle diameter in the range of 0.01 to 2 microns and (B) 10 to 40 parts by weight of a copolymer produced by copolymerizing (a) 10 to 50% by weight of an alkyl or cycloalkyl acrylate having an alkyl group of 1 to 10 carbon atoms or a cycloalkyl group of 4 to 8 carbon atoms, (b) 30 to 80% by weight of an alkyl or cycloalkyl methacrylate having an alkyl group of 1 to 20 carbon atoms or a cycloalkyl group of 4 to 8 carbon atoms, (c) 1 to 5% by weight of a copolymerizable unsaturated carboxylic acid, and (d) 0 to 59% by weight of a hydroxyalkyl acrylate having a hydroxyalkyl group of 2 to 10 carbon atoms (providing that the total amount of the monomers is 100% by weight) and having a number average molecular weight in the range of 10,000 to 100,000 and a glass transition point in the range of -40.

Abstract: A carrier for catalyst using refractory particles as cores and having a refractory inorganic powder and optionally whiskers, inorganic oxide sols, or mixtures thereof deposited on the cores, and a method for the production thereof.

Abstract: A method for joining a structural member made of a synthetic resin such as fiber reinforced plastic (FRP) with a further synthetic resin or other structural member. The method is effective when using synthetic resin members instead of conventional lumber or steel members in a main framework of a cooling tower. FRP members increase the corrosion resistance and simplify the assembly of such towers.

Abstract: A method for inhibiting polymerization of a maleimide, which comprises adding to said maleimide, as a polymerization inhibitor, at least one compound selected from the group consisting of thiodipropionic esters, 4-t-butyl-catechol, 2,4-dimethyl-6-t-butyl phenol, 2,5-di-t-butylhydroquinone, 2-t-butyl-hydroquinone, 2,4-bis-(n-octylthio)-6-(4-hydroxy-3,5-di-t-butylanilino)-1,3,5-trizaine, 2,2'-thiobis-(4-methyl-6-t-butylphenol), 4,4'-thiobis-(6-butyl-m-cresol), and triethyleneglycol-bis-[3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate].

Abstract: The present invention provides dye transfer type thermal printing sheet comprising a base sheet, a dye-containing layer formed on the base sheet and a dye-permeable layer which is formed on the dye-containing layer and comprises at least one water dispersible polysiloxane graft polymer which is obtainable by polymerizing (B) 0.05 to 10% by weight of a polymerizable silane compound, (C) 1 to 30% by weight of an unsaturated organic acid and (D) 40 to 97.95% by weight of a monomer which is copolymerizable with the silane compound (B) and the unsaturaed organic acid (C) in the presence of (A) 1 to 20% by weight of a polysiloxane having terminal hydroxyl groups (provided that the total of the components (A), (B), (C) and (D) is 100% by weight) in an organic solvent except an alcohol or at least one salt of said graft polymer with a base, which has good storage stability, generates images with improve weather durability and prevents great decrease of print density as increase of the number of printing times.

Abstract: Methods are disclosed for the production of (I) a cationic water-soluble resin by the reaction of a polyethylene glycol polyhalohydrin ether resulting from the reaction between polyethylene glycol and an epihalohydrin with an aziridine compound and (II) and (III) cationic water-soluble resins by the reaction of (I) the resin with an epihalohydrin and/or a polyfunctional epoxy compound in the presence or absence of a polyalkyleneimine. The resins (I), (II), and (III) are stable over a wide range of pH value and are useful as a water-treating agent.

Abstract: A method for the production of a 1,3-dioxolane represented by the general formula III: ##STR1## wherein R.sup.1 is hydrogen atom or an alkyl group of 1 to 5 carbon atoms and R.sup.2 is hydrogen atom or an alkyl group of 1 to 2 carbon atoms or a phenyl group, which method comprises reacting an aldehyde represented by the general formula I ##STR2## wherein R.sup.1 has the same meaning as defined above, with an alkylene oxide represented by the general formul II: ##STR3## wherein R.sup.2 has the same meaning as defined above, in an alkylene glycol solvent corresponding to said alkylene oxide in the presence of at least one catalyst selected from the group consisting of bromides of alkali metals, iodides of alkali metals, bromides of alkaline earth metals, and iodides of alkaline earth metals.

Abstract: Water-absorbent resins having an average particle diameter of 100 to 600 .mu.m and a particle diameter distribution of 0.35 or less are prepared by polymerizing an aqueous solution of a water-soluble ethylenically unsaturated monomer, pulverizing and sieving the gel-like polymer so obtained, and crosslinking the surface of the polymer powder. In an alternative process, an aqueous solution of the monomer having a viscosity greater than 15 cps is dispersed in a hydrophobic organic solvent and polymerized to obtain a polymer powder, and the surface of the polymer powder is crosslinked.

Abstract: The present invention concerns a method of removing nitrogen oxides in exhaust gases from a diesel engine by using a catalyst in a reacter under the presence of ammonia, wherein a humidity of in-take air as a specific factor and one or more of engine power, fuel consumption amount of engine, temperature of engine in-take air and exhaust gas temperature as selective factors are measured respectively as the measuring factors and the flow rate of ammonia is controlled based on measured values and ammonia is supplied to an exhaust gas flow channel from the engine to the reactor.

Abstract: A catalyst for purifying exhaust gas produced by coating honeycomb carriers of monolithic structure with a catalyst composition comprising cerium oxide particles stabilized with (a) zirconia or (b) zirconia and at least one member selected from the group consisting of yttria and calcia, refractory inorganic oxide particles, 0.02 to 2% by weight of rhodium based on said catalyst composition, and 0 to 10% by weight of at least one platinum-family metal selected from the group consisting of platinum and palladium based on said catalyst composition.

Abstract: An exhaust gas purification catalyst for purifying carbonaceous fine particles comprising a refractory three-dimensional structure and deposited thereon, (a) a refractory inorganic oxide, (b) palladium and (c) an oxide of at least one element selected from the group consisting of praseodymium, neodymium and samarium as catalyst components.