Abstract: A two-layered olefin-based resin pellet comprising a core layer formed of an olefin-based resin composition (A) and a sheath layer formed of an olefin-based resin composition (B) and laminated on the outer surface of the core layer, wherein said olefin-based composition (A) contains an insecticidal compound, a granular inorganic filler, a metal soap, and an olefin-based resin (a) having a relatively high solubility to the insecticidal compound; and said olefin-based resin composition (B) contains, as a main component, an olefin-based resin (b) having a relatively low solubility to the insecticidal compound.

Abstract: A two-layered olefin-based resin pellet comprising a core layer formed of an olefin-based resin composition (A) and a sheath layer formed of an olefin-based resin composition (B) and laminated on the outer surface of the core layer, wherein said olefin-based composition (A) contains an insecticidal compound, a granular inorganic filler, a metal soap, and an olefin-based resin (a) having a relatively high solubility to the insecticidal compound; and said olefin-based resin composition (B) contains, as a main component, an olefin-based resin (b) having a relatively low solubility to the insecticidal compound.

Abstract: An antibacterial polyester resin composition which comprises an inorganic antibacterial agent, a thermoplastic polyester resin as a base resin and 5 to 50% by weight of a low molecular weight polyester resin having a number average molecular weight of 1800 to 3000 based on the inorganic antibacterial agent as a vehicle for dispersing the inorganic antibacterial agent.

Abstract: A process for manufacturing multilayer pellets having a core-sheath structure with a molding material forming a sheath which covers the outer circumference of another molding material forming a core, which includes (a) supplying the core material and the sheath material to a die extruder having multiple extrusion-forming parts arranged along a circumference, (b) extruding multiple multilayer strands from the extrusion-forming parts by covering around the outer circumference of the core material concentrically with the sheath material, and (c) cutting the extruded multilayer strands to manufacture multilayer pellets.

Abstract: A process for manufacturing multilayer pellets having a core-sheath structure with a molding material forming a sheath which covers the outer circumference of another molding material forming a core, which includes (a) supplying the core material and the sheath material to a die extruder having multiple extrusion-forming parts arranged along a circumference, (b) extruding multiple multilayer strands from the extrusion-forming parts by covering around the outer circumference of the core material concentrically with the sheath material, and (c) cutting the extruded multilayer strands to manufacture multilayer pellets.

Abstract: A method and an apparatus for automatic measurement of a concentration of an oxidant or a reductant comprisesa solid electrode placed in an electrolytic cell in which a solution is flowed as a laminar flow;a potentiostat for measuring said concentration of an oxidant or a reductant;an electric potential sweeping device which is a continuous functional wave generator connecting to said potentiostat; andsaid continuous functional wave generator being used for washing said solid electrode by applying an alternating rectangular or pulse voltage having a frequency of 40 to 0.1 Hz.The working solid disk electrode is cleaned by alternately oscillating a potential in a range of the anode and cathode potentials for causing an electrolysis of water.