Nippon Shokubai Co., Ltd.

Matsushita Electric Industrial Co., Ltd.

Panasonic Corporation

Nippon Shokubai Kagaku Kogyo Co., Ltd.

Seiichi Suzuki

Yoshio Umeda

Toshiki Yamamura

Teruyuki Naka

Junichi Nawama

Yoshiyuki Onda

Koichi Yamamoto

Akira Kumon

Kazuo Kodama

Yutaka Morimoto

Hisanori Nagase

Taisuke Kasahara

Kazutomo Takahashi

Hideyuki Nishibayashi

Isao Satoh

Takashi Tazaki

Takashi Saito

Kenji Maeda

Naoto Yumiki

Kenichi Honjo

Kazushi Torii

Mitsuyoshi Okamoto

Takayuki Hayashi

Yoshimasa Fushimi

Yoshifumi Adachi

Yoshifumi Yanagawa

Atsuro Yoneda

Syunsuke Kimura

Tetsuya Imamura

Yusuke Watanabe

Toshimasa Kitayama

Taishi Kobayashi

Hidefumi Ishibashi

Tomoya Inoue

Kenjirou Tsuda

Masao Kitano

Takaharu Shigeta

Yujiro Goto

Minori Sato

Masashi Tokunaga

Yutaka Shirai

Haruyo Ohkubo

Katsumi Yamada

There is provided an ethyleneimine polymer (solution) capable of expressing excellent properties when used in such usages as, for example, coagulants for wastewater, papermaking chemicals such as freeness improvers and the like, enzyme immobilization agents, and adhesion improvers (for example, adhesion promoters for extrusion laminate (anchor coating agent)). To solve the above object, there is provided an ethyleneimine polymer solution including an ethyleneimine polymer and water, wherein a weight average molecular weight (Mw) of the ethyleneimine polymer is 200,000 or more, the weight average molecular weight (Mw) being measured based on pullulan by gel permeation chromatography (GPC), and a ratio of a component having a weight average molecular weight (Mw) of 30,000 or more is 60 mass % or more with respect to 100 mass % of a total amount of the ethyleneimine polymer.

Ethyleneimine polymer solution and method for producing same

Provided is an ethyleneimine polymer which exhibits excellent close adhesion properties and adhesive properties and is unlikely to form a gel-like film, and a method for producing the same. An ethyleneimine polymer, wherein a number average molecular weight (Mn) of the ethyleneimine polymer measured by gel permeation chromatography in terms of pullulan is 13,000 or more, a degree of dispersion of the ethyleneimine polymer is greater than 3.0 and 5.0 or less, and a water content in the ethyleneimine polymer is from 3 to 35% by weight.

Ethleneimine polymer and method for producing same

Provided is an ethyleneimine polymer which exhibits excellent close adhesion properties and adhesive properties and has a low water content, and a method for producing the same. An ethyleneimine polymer, in which the number average molecular weight (Mn) of the ethyleneimine polymer measured by gel permeation chromatography in terms of pullulan is 13,000 or more and the value obtained by dividing the weight average molecular weight by the number average molecular weight (weight average molecular weight: Mw/number average molecular weight: Mn=degree of dispersion) of the ethyleneimine polymer is from 1.4 to 3.0.

Ethyleneimine polymer and method for producing the same

The present invention provides a water absorbing agent, including: water absorbent resin particles; and a modified cationic polymer compound containing a primary amino group and/or a secondary amino group, the modified cationic polymer compound being obtained by reacting, with a modifying agent, a cationic polymer compound containing the primary amino group and/or the secondary amino group, and the modifying agent containing two or more carbon atoms continuously linked, and one reactive group which reacts with the primary amino group and/or the secondary amino group. The present invention further provides a method for producing a water absorbing agent including water absorbent resin particles, the method including the step (i) of mixing the water absorbent resin particles with a modified cationic polymer compound.

Water absorbing agent and production method thereof

An imaging apparatus has an image sensor that captures the optical image of an object formed by an imaging optical system and converts the optical image into the electrical still image signal, a signal processor for dividing a representation of the image signal into a plurality of areas, and for determining a color characteristic for each area of the plurality of areas, the color characteristic consisting of a hue and/or chroma saturation, a selector for selecting at least one area of the plurality of area for which its respective color characteristic substantially corresponds to a preset color characteristic, and a focus controller for determining focus parameters of the imaging apparatus for the selected area and generating a focus control signal for adjusting the image optical system based on the focus parameters.

Imaging apparatus

A projector system includes a first projection section projecting inputted image information onto a projection target, a laser pointer pointing a predetermined part of an image projected onto a screen, an image pick-up section picking up the image in a state pointed by the laser pointer, and a pointed position detecting section detecting the position of the part pointed by the laser pointer on the basis of the image information picked up by the image pick-up section. And a projection lens projects an image on the basis of the position of the part pointed by the laser pointer and detected by the pointed position detecting section and/or in correspondence to the image of the pointed part.

Projector system

In a network control system, a device has screen display data indicative of its operating screen, and a controller issues a screen request () to obtain the screen display data, etc., as screen information () from the device. By using the screen display data, etc., the controller displays the operating screen. When an operation is carried out to the operating screen, its operation information and identification information of the screen display data are sent to the device as operation request (). The device executes a function corresponding to the operation request. As a result, when the screen display data in the device is changed, the device sends the changed screen display data, etc., to the controller as screen information ().

Network control system

Provided are processes by which an ethylenimine polymer and an aqueous solution thereof can advantageously be produced at low costs in an industrial scale. The ethylenimine polymer can be produced by polymerizing crude ethylenimine obtained by a simple distilling operation from an ethylenimine-containing reaction mixture produced by subjecting ethanolamine to intermolecular dehydration reaction, preferably crude ethylenimine having impurity contents which are controlled in the specific ranges. When the above crude ethylenimine is polymerized in an aqueous medium, capable of being obtained is an aqueous solution of an ethylenimine polymer having a higher molecular weight than that produced by non-solvent polymerization. The ethylenimine polymer can be purified by, for example, adding water thereto, mixing them and then vaporizing and removing water under heating. The aqueous solution of an ethylenimine polymer can be purified by heating and condensing it.

Ethylenimine polymer, aqueous solution of ethylenimine polymer, production process for the same and purifying process therefor

Provided is a process for producing an ethylenimine polymer aqueous solution which has a high concentration (high resin content) and is less changeable with the passage of time, that is, has a stabilized quality. The above process comprises polymerizing ethylenimine in a water based medium at a temperature of 80&deg; C. or lower and then ripening it at a temperature of 100 to 150&deg; C.

Production process for ethylenimine polymer aqueous solution

It is an object of this invention to provide a graphic display apparatus that reduces the amount of CG data transferred from a server through a network and that allows three-dimensional characters displayed at a terminal to move smoothly. It is another object of this invention to provide an AV synchronous reproduction apparatus that can synchronize an image with a score the tempo of which is changed during reproduction. According to this invention, when a server instructs a terminal to graphically display three-dimensional characters, the terminal provides a plurality of motion patterns. The server then transmits scenario data to the terminal, and the terminal operates based on the scenario data to switch scenes for graphical displays. The terminal switches the scenes for graphical displays with a timing for a home position which is common or substantially common to a motion pattern being executed and a motion pattern to be executed next.

Graphic display apparatus, synchronous reproduction method, and AV synchronous reproduction apparatus

A charging device for charging a movable object to be charged. A charging member contacts the object to be charged. A power source applies a voltage to the charging member, wherein the power spectrum PS satisfies the following relation when the space frequency of the profile of the surface of the charging member is analyzed. In the section of 10.ltoreq.f.ltoreq.100 (cycles/mm):

Charging device and an image forming apparatus using a charging device

The invention is directed at ensuring stable track accessing despite the presence of backlash in a pickup drive mechanism, and at providing a precise track accessing operation not affected by the relative position or relative speed between pickup and carriage at the time a track access start instruction is issued. To achieve this, when the track access start instruction is issued in a tracking condition in which the pickup is following a track on a recording medium, the carriage is caused to begin to move in a track access direction by the action of a coarse actuator, while the pickup is still kept on track of the recording medium by means of a fine actuator. When the position of the pickup relative to the carriage has reached a boundary of a switch-off range preset within a movable range of the pickup or moved outside the switch-off range, the track following action of the pickup by the fine actuator is stopped, and the pickup is moved to the target track by using coarse driving control and, as necessary, fine driving control in collaborating fashion.

Track accessing method and apparatus using coarse and fine driving

A charging device for charging a moving photoconductor. The charging device includes a charging member, an electric power supply for applying a voltage to the charging member, and a light exposing device, such as a LED for exposing surfaces of the charging member and the photoconductor in a closing region where the surfaces of the charging member and the photoconductor move closer to each other. The charging member is a blade having a transparent layer for guiding a light beam from the LED to the closing region and a shading layer for shading the light beam to a contacting region and a separating region. The contacting region is where the surfaces of the charging member and the photoconductor contact, and the separating region is where the surfaces of the charging member and the photoconductor gradually separate from each other. The LED is disposed in the vicinity of an end of the transparent layer opposite to the other end in the closing region in a section parallel to the moving direction of the photoconductor.

Charging device and image forming apparatus containing the charging

Cystamine is produced by a method which comprises reacting a 2,2-dialkyl thiazolidine represented by the general formula (1): ##STR1## wherein R.sup.1 and R.sup.2 independently are alkyl groups of 1 to 5 carbon atoms, with a peroxide in the presence of water. An alkylene oxide adduct of cystamine is produced by a method which comprises reacting the reaction mixture obtained as described above further with an alkylene oxide. These cystamine and alkylene oxide adduct of cystamine are useful as an additive for an aqueous lubricant.

Method for production of cystamine and alkylene oxide adduct thereof,

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Kanagawa, Japan

Seiichi Suzuki