Abstract: A method for controlling a particle diameter and a particle diameter distribution of emulsion particles during manufacturing of an emulsion dispersion is provided. The method includes causing two or more types of liquids substantially immiscible with each other to continuously and sequentially pass through net bodies. The net bodies are disposed in a cylindrical flow passage at intervals of 5 to 200 mm, and the number of the net bodies is more than 50 and 200 or less. Each of the net bodies is equivalent to a gauze having a mesh number of 35 mesh to 4000 mesh in accordance with an ASTM standard and has a surface that intersects the direction of the flow passage. An emulsification apparatus used for the method includes a feed pump for feeding two or more types of liquids substantially immiscible with each other; and a cylindrical flow passage to which the two or more types of liquids fed by the feed pump are delivered.

Abstract: The present invention relates to an emulsification method and an emulsification apparatus, capable of attaining easy control of particle size and particle size distribution, and simple scale-up and maintenance, and providing an emulsifying amount sufficient for industrial production. Namely, the method comprises continuously and successively passing two or more types of liquids which are substantially immiscible with each other through two or more mesh members disposed at certain intervals in the presence of an emulsifier to thereby perform emulsification, and the emulsification apparatus as an apparatus for carrying out the method comprises liquid feed pumps for feeding two or more types of liquids which are substantially immiscible with each other, and a cylindrical flow passage to which the two or more types of liquids are fed by the liquid feed pumps, the cylindrical flow passage including a predetermined number of wire gauzes disposed therein at a predetermined interval.

Abstract: A method for controlling a particle diameter and a particle diameter distribution of emulsion particles during manufacturing of an emulsion dispersion is provided. The method includes causing two or more types of liquids substantially immiscible with each other to continuously and sequentially pass through net bodies. The net bodies are disposed in a cylindrical flow passage at intervals of 5 to 200 mm, and the number of the net bodies is more than 50 and 200 or less. Each of the net bodies is equivalent to a gauze having a mesh number of 35 mesh to 4000 mesh in accordance with an ASTM standard and has a surface that intersects the direction of the flow passage. An emulsification apparatus used for the method includes a feed pump for feeding two or more types of liquids substantially immiscible with each other; and a cylindrical flow passage to which the two or more types of liquids fed by the feed pump are delivered.

Abstract: An anti-blocking agent master batch is provided, obtained by compounding 100 parts by mass of a polyolefin-based resin with 1 to 40 parts by mass of polymer fine particles, the polymer fine particles obtained by: causing two or more fluids including a liquid medium, a monomer or monomers, and a polymerization initiator to continuously and successively pass through a plurality of net bodies which are disposed at given intervals in a cylindrical passage and each have a surface crossing a direction of the passage to obtain an emulsion including liquid droplets containing the monomer or monomers and the polymerization initiator, the liquid droplets being dispersed in the liquid medium; and heating this emulsion to polymerize the monomer or monomers. Also provided is a manufacturing method thereof.

Abstract: The present invention relates to an emulsification method and an emulsification apparatus, capable of attaining easy control of particle size and particle size distribution, and simple scale-up and maintenance, and providing an emulsifying amount sufficient for industrial production. Namely, the method comprises continuously and successively passing two or more types of liquids which are substantially immiscible with each other through two or more mesh members disposed at certain intervals in the presence of an emulsifier to thereby perform emulsification, and the emulsification apparatus as an apparatus for carrying out the method comprises liquid feed pumps for feeding two or more types of liquids which are substantially immiscible with each other, and a cylindrical flow passage to which the two or more types of liquids are fed by the liquid feed pumps, the cylindrical flow passage including a predetermined number of wire gauzes disposed therein at a predetermined interval.

Abstract: A hydrocarbon solvent comprising a fraction which is obtained by reacting styrene and cumene in the presence of an acid catalyst and contains 85% by weight or more of 1-phenyl-1-(p-isopropylphenyl)ethane and 5% by weight or less of total styrene dimers, and a pressure-sensitive copying material made using said solvent. The hydrocarbon solvent is inexpensive and excellent in dissolving power for dyes, color-developing rate and so forth, and is satisfactorily odorless.

Abstract: A pesticidal composition to noxious organisms which comprises a diarylalkane and an active component effective for killing or repelling noxious organisms and the diarylalkane is at least one member selected from the group consisting of butyl diphenylmethane, butyl-1,1-diphenylethane and butyl-1,2-diphenylethane. The used diarylalkane has a high dissolving power to the effective component, a high boiling point and a high flash point with low unpleasant smell and does not deteriorate the effective component in the pesticidal composition.

Abstract: An excellent pressure-sensitive copying material which has an excellent color developing rate, little odor, and neither offset nor bleeding, said copying material comprising an electron-accepting developer and a solution of an electron-donating color former which produces colors upon contacting with said color developer, wherein it is characterized in that the solvent of said solution comprises a mixture of 20 to 80 weight % of sec-butyldiphenylmethane, 5 to 50 weight % of sec-butyldiphenylethane (1,1) and 5 to 50 weight % of sec-butyldiphenylethane (1,2).

Abstract: The present invention is connected with a pressure sensitive copy material using a color former solution in which an electron accepting developer and an electron donating color former capable of developing a color when brought into contact with the developer are dissolved in a solvent, and as the solvent in the color former solution, a solvent composition is used which comprises (a) 5 to 50% by volume of one selected from the group consisting of a hydrogenated lower polymer of propylene and/or a butene, an alicyclic hydrocarbon, an alkylbenzene and a kerosine fraction, and (b) 50 to 95% by volume of a bicyclic aromatic hydrocarbon and/or a chlorinated paraffin oil having a viscosity of 3 cSt or more at 40.degree. C., the aforesaid developer comprising an aromatic carboxylic acid, a polymer thereof, a metallic salt thereof, a polyvalent metallized carboxy-modified terpene phenolic resin or a derivative thereof.