Patent application number | Description | Published |
20110166300 | WATER-ABSORBENT RESIN MANUFACTURING METHOD AND LIQUID PERMEABILITY IMPROVEMENT METHOD - A method for the production of a water-absorbing resin is to be provided which permits enhancement and stabilization of property, for example, liquid permeability, of a water-absorbing resin by a simple and convenient method without requiring change of raw materials or expensive facility investment. The method comprises a polymerization step for polymerizing an aqueous solution of acrylic acid (or salt thereof) to obtain a hydrogel cross-linked polymer; a drying step for drying the hydrogel cross-linked polymer to obtain a water-absorbing resin powder; a classification step for classifying the water-absorbing resin powder; and a surface cross-linking step for surface cross-linking the water-absorbing resin powder before or after the classification step, wherein electricity is eliminated in the classification step. | 07-07-2011 |
20120157635 | POLYACRYLIC ACID (SALT)-TYPE WATER ABSORBENT RESIN AND METHOD FOR PRODUCING OF SAME - Disclosed is a method for producing a water absorbent resin, by which a surface-crosslinked water absorbent resin having excellent physical properties can be efficiently obtained at low cost, while assuring high productivity. When the production scale is increased to a continuous production on a huge scale (for example, 1 t/hr or more), the physical properties are improved and stabilized (for example, standard deviation of the physical properties is reduced) by a surface-crosslinking treatment, and the absorption against pressure (AAP) and liquid permeability (SFC) are further improved. Specifically disclosed is a method for producing a polyacrylic acid (salt)-type water absorbent resin, which comprises: a step of preparing an aqueous monomer solution using an acrylic acid (salt); a step of continuously polymerizing the aqueous monomer solution; shedding step of a hydrous gel-like crosslinked polymer during or after the polymerization; a step of drying the thus-obtained particulate hydrous gel-like crosslinked polymer; and a surface treatment step in which a surface-crosslinking agent is added to and reacted with the dried water absorbent resin powder. In the surface treatment step, the continuous mixing apparatus for the surface treatment agent and the continuous heating device are connected and periodic shielding is performed between the mixing apparatus and the heating device. | 06-21-2012 |
20130005919 | PROCESS FOR PRODUCING WATER-ABSORBING RESIN - The disclosed process for continuously producing a water-absorbing resin comprising a plurality of joined continuous steps; a polymerization step of polymerizing an aqueous unsaturated monomer solution, a drying step of drying a particulated water-containing gel-like crosslinked polymer obtained in a finely crushing step during the polymerization or after the polymerization, a pulverizing step after the drying, a classification step after the drying, and a surface treatment step for the water-absorbing resin powder after the classification step. In the process, with some of the above steps kept running, the other steps are interrupted, and subsequently all the steps are restarted. | 01-03-2013 |
20130005926 | PROCESS FOR PRODUCING WATER-ABSORBING RESIN - The disclosed process for producing a water-absorbing resin comprising: a polymerization step of polymerizing an aqueous unsaturated monomer; and a drying step of drying a particulated water-containing gel-liked crosslinked polymer, obtained in a finely crushing step during the polymerization or after the polymerization. In the process, the drying step is interrupted with a dryer kept in a heated state and thereafter the drying step is restarted. | 01-03-2013 |
20140114035 | METHOD AND APPARATUS FOR PRODUCING POLYACRYLIC ACID (SALT)-BASED WATER ABSORBENT RESIN - The purpose of the present invention is to provide a method for producing a water absorbent resin in which a water absorbent resin having excellent properties can be obtained effectively. The present invention relates to a method for producing a polyacrylic acid (salt)-based water absorbent resin, which includes a polymerization step of polymerizing an aqueous monomer solution containing a polymerization inhibitor, acrylic acid (salt) and an internal cross-linking agent to produce a water-containing gel-like cross-linked polymer, a gel-crushing step of performing the gel-crushing of the water-containing gel-like cross-linked polymer simultaneously with or subsequent to the polymerization to produce a particulate water-containing gel-like cross-linked polymer, and a drying step of supplying the particulate water-containing gel-like cross-linked polymer to a continuous through-flow belt-type dryer by a traverse conveyor to dry the particulate water-containing gel-like cross-linked polymer, in which the belt temperature of the traverse conveyor is 40 to 120° C. and/or the water soluble component in the particulate water-containing gel-like cross-linked polymer on the traverse conveyor is 10% by weight or less and the water soluble component is increased after the drying step. | 04-24-2014 |
Patent application number | Description | Published |
20090049500 | RECEIVING DEVICE - A receiving device is one capable of processing a first application received from a broadcast station and a previously built-in second application, including: a first application management unit operable to control the first application; a second application management unit operable to control the second application; an operation management unit operable to hold operating states of the first application and the second application; and a duplicate function management unit operable to hold exclusion/sharing information showing priorities of the first application and the second application, and operable to make the first application management unit or the second application management unit perform an exclusion control based upon the exclusion/sharing information or the operating state managed by the operation management unit, in which the duplicate function management unit terminates the second application in activation, upon activation of the first application. | 02-19-2009 |
20090055881 | DIGITAL BROADCAST RECEIVER - There is provided a cable broadcast receiver for solving problems arising in the switching between execution of a download application and reproduction of video audio information from an external device. The receiver has operating modes including a first mode and a second mode. Under the first mode, the receiver is operated based on a download application acquired through a network. Under the second mode, the receiver is operated based on a receiver application. The receiver is operated under the second mode when information inputted from an external device is to be displayed. A key delivery unit delivers, upon receiving a key code instructing a channel change during the operation under the second mode, the key code indicating the channel change to a download application management unit which controls the key delivery to the download application, and a receiver application management unit which controls the key delivery to the receiver application. | 02-26-2009 |
20090282434 | Digital broadcast receiver - There is provided a digital broadcast receiver for solving various problems regarding a display which arise due to the switching of a mode. For example, there is provided a digital broadcast receiver capable of displaying an emergency alert broadcast by an EAS even when a mode is switched from an OCAP mode to an external input mode. The receiver has a plane management unit for managing a receiver only plane and a download application plane. The receiver prohibits the emergency alert broadcast from being displayed in the receiver only plane when, under an OCAP mode, a download application takes away an EAS function of the receiver, and then permits the emergency alert broadcast to be displayed in the receiver only plane when the mode is switched from the OCAP mode to an external input mode. | 11-12-2009 |
20100060789 | RECEPTION DEVICE AND RECEPTION METHOD - The display information generating unit manages a first plane that contains video information and a second plane that contains first still information and second still information, and merges the first plane and second plane. The control unit adds at least one of the first still information and second still information to the second plane when an interrupt signal is generated. If the display area of the video information is the full display area of the display screen, the control unit starts a screen saver operation that changes the first still information after a first predetermined period from a time point of the interrupt signal. If the display area of the video information is smaller than the full display area of the display screen, the control unit starts a screen saver operation that changes the second still information after a second predetermined period from a time point of the interrupt signal. | 03-11-2010 |
20100287596 | RECEIVING DEVICE - In a power-on operation of a receiving device that receives digital broadcasting, when PIN information for setting a parental control function of a download application obtained via a network is set, a video output is turned to an off state during a time period before a download application is received from the power-on until a predetermined time elapses, a download application is executed when the download application is received during the time period from the power-on until the predetermined time elapses, and the setting of the PIN information is cancelled when a download application is not received during the time period from the power-on until the predetermined time elapses. | 11-11-2010 |