摘要:
A process for the production of a compound having the formula: ##STR1## which comprises a reaction of a compound having the formula: ##STR2## with a compound having the formulaR.sup.2 SO.sub.2 CH.sub.2 NCwhereinX is same or different substituent(s) selected from the group consisting of halogen, C.sub.1-6 alkyl, C.sub.1-6 haloalkyl, C.sub.1-6 alkylamino, C.sub.1-6 alkoxy, nitro, cyano and methylenedioxy;COOR.sup.1 is carboxylic acid or ester;R.sup.2 is C.sub.1-10 cyclic hydrocarbon which may be substituted by substituent(s) not giving negative effects to said reaction;n is 0, 1 or 2.
摘要:
A thermosetting silicone rubber composition that contains a cerium oxide powder in an amount of 0.001 to 10 mass % and that is characterized by total transmittance of light equal to or greater than 90% according to JIS K7105 when the light is passed through a 1 mm-thick layer of an alkenyl-containing dimethylpolysiloxane gum with 0.1 mass % of said cerium oxide powder dispersed in the gum.
摘要:
The present invention relates to a fastener and a fastening method for joining together two or more members including at least one complicate-shaped plate. A fastener comprises a cap nut (20) having a main body and a thin-walled portion (24) projecting from the main body, and a bolt (30) screwed into the cap nut (20). The cap nut (20) is fixed to a plate-like member (12) by inserting the thin-walled portion (24) into a through-hole (12a) of the plate-like member (12) and caulking the thin-walled portion (24).
摘要:
Molded flexible polyurethane foam is made from a polyol mixture that contains a dispersion of polymer particles in one or more polyether polyols of a particular type and one or more high functionality, high-ethylene oxide polyols which have an average oxyethylene content of from 26 to 100% by weight, an average hydroxyl equivalent weight of from 1400 to 2200 and an average nominal hydroxyl functionality of from 6 to 10. The polyol mixture produces a foam that has excellent resiliency and low compression sets.
摘要:
A casing cover is used in separating a motor assembly and a pump assembly from each other in a pump device. The casing cover has a cylindrical wall portion having a motor-side positioning portion disposed on one of an inner and outer circumferential surface of the cylindrical wall portion for being fitted to a member of the motor assembly, and a pump-side positioning portion disposed on the other of an inner and outer circumferential surface of the cylindrical wall portion for being fitted to a member of the pump assembly.
摘要:
An apparatus for controlling performance of a fluid machinery by controlling rotational speed of the fluid machinery. A performance regulating device for the fluid machinery includes a frequency converter, a casing for housing the frequency converter so as to ensure being airtight against an atmosphere, an input, and an output connected to the casing so as to ensure being airtight against the atmosphere.
摘要:
A bearing device for use in a pump which has a bearing member composed of a hard and brittle material made of ceramic such as silicon carbide (SiC). The bearing device has a bearing housing, a ceramic bearing member housed in the bearing housing and supporting a shaft, an elastic material around the ceramic bearing member for preventing the ceramic bearing member from being broken, and a thrust collar for preventing fragments of the ceramic bearing member from being scattered when the ceramic bearing member is broken.
摘要:
A full-circumferential flow pump includes an outer cylinder and a motor housed in the outer cylinder. The motor has a motor frame, a stator disposed in the motor frame, a main shaft, a rotor mounted on the main shaft and rotatably disposed in the stator. The outer cylinder defines an annular space defined around the motor frame, the outer cylinder having a pump suction port defined therein for introducing a fluid therethrough into the annular space. A pump unit is mounted on an end of the main shaft, and the outer cylinder has a discharge window defined therein for discharging a fluid from the pump unit. A discharge case is mounted on an outer circumferential surface of the outer cylinder in communication with the discharge window, the discharge case having a pump discharge port.
摘要:
A non-clogging type pump impeller includes: a fluid passage provided in an approximately cylindrical body and connecting a suction port to a discharge port. The fluid passage has a vortex shape as viewed from an axial direction. A first recess, which is sunk downwardly in the axial direction, is formed on a first end surface of the approximately cylindrical body so as to surround a boss. A second recess, which is sunk upwardly in the axial direction, is formed on a second end surface of the approximately cylindrical body so as to surround the suction port. At least one communication hole provides fluid communication between the first recess and the second recess. Sewage in the second recess is introduced into the first recess through the at least one communication hole to thereby effectively remove an air pocket trapped on the first end surface of the impeller and in the first recess.
摘要:
It is an object of the present invention to provide a pigment dispersion, an ink composition, and an ink set, enabling excellent glossiness, bronzing prevention, and ink composition storage stability to be realized. The present invention provides a pigment dispersion characterized by comprising at least a pigment, an aqueous medium, a copolymer resin between a hydrophobic monomer and a hydrophilic monomer, and a urethane resin, and also an ink composition characterized by containing at least the pigment dispersion and an aqueous medium, and an ink set characterized by comprising at least the ink composition.