摘要:
A microencapsulated agricultural chemical comprises an agricultural chemical as an active ingredient having a solubility of not more than 1 g in 100 ml of water at 20.degree. C. and vapor pressure of not more than 760 mmHg at 60.degree. C. and a microcapsule wall enclosing the agricultural chemical therein and the microcapsule wall comprises a water-soluble cationic urea resin and at least one of prepolymer composed of formaldehyde and at least one compound selected from the group consisting of urea, melamine and thiourea. The microcapsule is prepared by dispersing the agricultural chemical in an aqueous medium containing the water-soluble cationic urea resin, an anionic surfactant and at least one of the prepolymer and maintaining pH of the obtained dispersion within an acidic range to polycondense the water-soluble cationic urea resin and at least one of the prepolymers.
摘要:
Ethylene copolymer compositions having excellent dielectric properties comprising an alkylfluoranthene having the following formula: ##SPC1##(wherein R represents an alkyl group containing from 1 to 4 carbon atoms, and x is an integer of from 1 to 4, and when x is an integer of 2 or greater, R may be different or the same) in an amount of at least 0.5 parts by weight per 100 parts by weight of an ethylene copolymer.
摘要:
Polyolefin compositions having excellent dielectric properties comprising an alkylpyrene having the following formula ##SPC1##(wherein R represents an alkyl group containing from 1 to 4 carbon atoms, and x is an integer of from 1 to 4, and when x is an integer of 2 or greater, R may be different or the same) in an amount of at last 0.5 parts by weight per 100 parts by weight of a polyolefin.
摘要:
Disclosed herein are microcapsules containing a hydrophobic, volatile substance as the core substance, a wall membrane of the microcapsule comprising a polymer made by interfacial polymerization of a polyvalent isocyanate with a water-soluble cationic urea resin and/or a prepolymer of aminoresin, and a resin made by polycondensing the water-soluble cationic urea resin with the prepolymer of aminoresin in the presence of a low-molecular anionic surfactant, and a process for producing the microcapsules.
摘要:
An epoxy resin composition having excellent electric insulating properties is obtained by incorporating into an epoxy resin one or more additives selected from the group consisting of fluoranthene, pyrene, alkylfluoranthenes of the generic formula: ##SPC1##And alkylpyrenes of the generic formula: ##SPC2##Wherein, R denotes an alkyl group having from one to four carbon atoms and x denotes an integer of from 1 to 4, and when x has a value of 2 or more, R may be the same or different.
摘要:
An image forming apparatus includes an image forming device including an image holding member; an intermediate transfer belt to whose outer surface a developer image formed on the image holding member of the image forming device is transferred, and that holds the developer image; a cleaning device that includes a plate member, and that performs a cleaning operation; and a collecting member that is disposed in contact with an outer peripheral surface of the intermediate transfer belt, and that removes and holds a resin particle existing at the outer peripheral surface of the intermediate transfer belt as a result of causing a speed of the intermediate transfer belt and a speed of the collecting member to differ from each other.
摘要:
An image forming apparatus includes an image bearing member, a medium transport member, an image transfer member, a first detection member detecting widthwise deviation of the image bearing member, a first deviation correcting member tiltable relative to the width direction and supporting the image bearing member, a first correction control section tilting the first deviation correcting member to correct deviation of the image bearing member, a second detection member detecting widthwise deviation of the transport member, a second deviation correcting member tiltable relative to the width direction and supporting the transport member, and a second correction control section tilting the second deviation correcting member to correct deviation of the transport member.
摘要:
An image formation device includes an image carrier that holds developed images, a transfer body that transfers the developed images held by the image carrier to a recording medium, a cleaning unit that cleans developer on the transfer body, a developer container in which the developer removed by the cleaning unit is deposited, and a sucking unit that sucks the developer leaking from the developer container, the transfer body having at least a rotating member of which both ends are rotatably supported, and the sucking unit having a suction hole opening at least at one end of the rotating member.
摘要:
A cleaning device includes: a first scraping member that scrapes off a developer on a surface of a moving body that circularly moves; a second scraping member that is disposed downstream from the first scraping member in a moving direction of the moving body, and that scrapes off residuals remaining on the surface of the moving body; a container having: a first housing portion that houses the developer scraped off by the first scraping member, as a recovered material; and a second housing portion that houses the residuals scraped off by the second scraping member; a discharge port that is disposed in the first housing portion, wherein the developer in the first housing portion is discharged to an outside of the container through the discharge port; and a conveying member that conveys the recovered material housed in the first housing portion to the discharge port.
摘要:
A pressure roller forms a nip for contacting a heating member to pinch and convey a heat recording material. The roller includes a core metal and an elastic layer containing filler. The elastic layer containing the filler includes thermal conductive filler with a length of not less than 0.05 mm and not more than 1 mm with a thermal conductivity λf in the longitudinal direction in a range of λf≧500 W/(m·k), being dispersed in not less than 5 vol % and not more than 40 vol %. The elastic layer containing the filler has a thermal conductivity λy in the longitudinal direction perpendicular to a recording material conveyance direction, of λy≧2.5 W/(m·k) and an ASKER-C hardness of the filler is not more than 60 degrees. A solid rubber elastic layer with a thermal conductivity λ in a thickness direction of not less than 0.16 W/(m·k) and not more than 0.40 W/(m·k) is included.