Abstract:
A process for producing a living radical polymer characterized in that a vinyl monomer is polymerized with use of a living radical polymerization initiator represented by the formula (1) and a compound represented by the formula (2), and the living radical polymer obtained by the process wherein R1 is C1-C8 alkyl, aryl, substituted aryl or an aromatic heterocyclic group, R2 and R3 are each a hydrogen atom or C1-C8 alkyl, and R4 is aryl, substituted aryl, an aromatic heterocyclic group, acyl, oxycarbonyl or cyano (R1Te)2 (2) wherein R1 is the same as above.
Abstract:
A process for producing a living radical polymer characterized in that a vinyl monomer is polymerized with use of a living radical polymerization initiator represented by the formula (1) and a compound represented by the formula (2), and the living radical polymer obtained by the process wherein R1 is C1-C8 alkyl, aryl, substituted aryl or an aromatic heterocyclic group, R2 and R3 are each a hydrogen atom or C1-C8 alkyl, and R4 is aryl, substituted aryl, an aromatic heterocyclic group, acyl, oxycarbonyl or cyano (R1Te)2 (2) wherein R1 is the same as above.
Abstract:
An object of the present invention is to provide a method for effectively producing, within a short period of time, a radical polymer having controlled molecular weight distribution or a narrow molecular weight distribution profile, the method including polymerizing a radical-polymerizable monomer. Another object of the invention is to provide a microreactor which can be readily fabricated. The invention attains the objects through provision of a method for producing a radical polymer, which method includes feeding a radical polymerization initiator and a radical-polymerizable monomer into a reaction tube having an inner diameter of 2 mm or less and performing polymerization in the reaction tube in a homogeneous liquid state under flow conditions, and a microreactor having a jacket for allowing a temperature-regulating fluid to pass therethrough and a plurality of round tubes which are arranged in parallel in the jacket, each having an inner diameter of 2 mm or less, wherein reaction temperature in the round tubes can be regulated through flowing of the temperature-regulating fluid in the jacket.
Abstract:
A child seat for a vehicle which can be firmly secured to a vehicle seat even with a shoulder belt of a three-point seat belt and which can wind up the seat belt to securely apply a predetermined tension to the seat belt. The child seat includes a child seat and a shaft attached to the child seat. The shaft is rotatable about an axis of the shaft. Additionally, a first end of the shaft is disposed at a higher elevation than a second end of the shaft. The shaft further includes at least one slit configured to accept a seat belt.
Abstract:
A digital camera that picks up an image of a print/picture and displays it in a monitor frame image. The camera comprises a CPU that identifies an area of the image of the print/picture and drives an image pickup unit such that the identified area of the image of the print/picture is placed in an optimal state in the frame image.
Abstract:
A motor driving method for a steering apparatus for applying an auxiliary steering force to a steering system with two motors. When the two motors are driven, a first one of the two motors is operated first. Thereafter, the other, second motor is driven, whereby smooth steering is effected.
Abstract:
A scanner for reading an object having a width larger than that of the distal end portion of a scanner main body, has an exit opening for outputting a light beam formed at the distal end portion of the scanner main body. An LED for generating a light beam, and a solid-state image pickup element for receiving the light beam which is reflected by the code, are arranged in the scanner main body. A gap portion for increasing the irradiation width of the light beam to be larger than the width of the distal end portion of the scanner main body is formed at the distal end portion of the scanner main body. Therefore, when a code is read by bringing the scanner main body close to or into contact with the code, the gap portion increases the width of the light beam to be larger than that of the distal end portion of the scanner main body, and therefore, a code having a width larger than the width of the distal end portion of the scanner main body can be read.
Abstract:
A child seat capable of easily adjusting its reclining angle. The child seat is placed on a vehicle seat, and the tongue of a seat-side belt and the buckle of a belt are latched to each other. Then, the dial is turned to wind the belt to fix the child seat to the vehicle seat. To adjust the reclining angle, a lock-releasing lever is pulled to pull out seat-fixing pins from pin through holes and to pivot an arm portion by a link bar so as to release the locking of the winder.
Abstract:
A main ink chamber with a through-hole contains a capillary member. An intermediate ink chamber is provided on the side wall of the main ink chamber. A path communicatively interconnects the main ink chamber and the intermediate ink chamber. A second meniscus forming member is disposed in a joint port, to thereby prevent ink leakage. In a print mode, ink flows from the main ink chamber to the joint port, through a meniscus forming member that is disposed in the through-hole. Air bubbles mingled into the ink move along the slanting upper wall of the path by their buoyant force, and are accumulatively stored in the upper part of the intermediate ink chamber. When ink is reduced to zero in the main ink chamber, air bubbles are introduced into the intermediate ink chamber through the meniscus forming member. As a result, the liquid level of the intermediate ink chamber is quickly reduced, thereby indicating a state that ink is used up.
Abstract:
The invention relates to a process for producing a cephalosporin of the formula ##STR1## by reacting the compound ##STR2## with the compound ##STR3## in the presence of boron trifluoride or a complex thereof.