baber/WOPTO huggingface dataset:
Patent JP-2011500317-A (JP)
Title: ヒドラジン化合物を除去する方法
IPC: C02F1/38
Filed: 2008-10-01
Abstract: ヒドラジン化合物を溶液から除去する方法を開示する。ヒドラジン化合物を含む溶液を架橋ポリビニルピロリドンと接触させる。
Patent JP-2011500704-A (JP)
Title: 結晶性化学療法薬
IPC: A61P35/00
Filed: 2008-10-16
Abstract: Ｎ−［４−（３−アミノ−１Ｈ−インダゾール−４−イル）フェニル］−Ｎ’−（２−フルオロ−５−メチルフェニル）尿素・１／４エタノール和物結晶形１、これを作製する方法、これを含む製剤およびこれを用いて作製される製剤ならびにこれを用いて疾患を有する患者を治療する方法が開示される。
Patent JP-2011502128-A (JP)
Title: 有機ホスホン酸数量体
IPC: C08L75/04
Filed: 2008-10-16
Abstract: 本発明は、クロロヒドロカルビルオキシホスホン酸数量体、有機ホスホン酸数量体、およびこのような数量体の調製のための方法を提供する。前記クロロヒドロカルビルオキシホスホン酸数量体は、下記の化学式によって表すことができる： 【化１】       （式中、Ｒ １ は、直鎖状または分岐状のヒドロカルビレン基、または酸素含有ヒドロカルビレン基であり、前記ヒドロカルビレン基は約２個〜約２０個の炭素原子、あるいは、少なくとも１個の脂環式環または芳香環を有するヒドロカルビレン基を有し、   Ｒ ２ はアルキル基または芳香族基であって、   ｎは約２〜約２０の数である）。
Patent JP-2011504892-A (JP)
Title: ホスホジエステラーゼ１０の阻害剤としてのアリール及びヘテロアリール縮合イミダゾ（１，５−ａ）ピラジン
IPC: A61P3/00
Filed: 2008-12-01
Abstract: 本発明は、イミダゾ［１，５−ａ］ピラジン誘導体と、それらを製造する方法と、これらの化合物を含む医薬製剤と、ヒトを含む哺乳類の中枢神経系疾患を治療するための活性化合物としての、ホスホジエステラーゼ１０（ＰＤＥ１０）の阻害剤であるこれらの化合物の薬学的使用とに関する。
Patent JP-2011504963-A (JP)
Title: 原油の酸性度を低下させる方法
IPC: C10G31/08
Filed: 2008-11-24
Abstract: パイプライン、タンカー船及びタンク車によって移動させることを含む、原油の処理中の腐食を阻止するために酸性原油の酸性度を低下させる方法。実質的な量の有機酸、特にナフテン酸化合物を有する原油が、超臨界水と脱酸用触媒とに接触される。処理済み原油生成物は元の原油より低い量の有機酸化合物を有する。
Patent JP-2011505155-A (JP)
Title: 脂溶性活性成分の微粉砕状調合物
IPC: A23L33/155
Filed: 2008-12-04
Abstract: 変性食物デンプンと、糖エステルからなる群から選択される１つ以上の構成要素とを含んでなる、１つ以上の脂溶性活性成分の（超微粒子）微粉砕状調合物、および前記調合物を含有する食品組成物、特に飲料。
Patent JP-2011507595-A (JP)
Title: 治療計算モードおよび治療提供モード
IPC: A61N1/365
Filed: 2008-12-16
Abstract: 第１の時間に受信した生理学的データを用いて計算される治療制御パラメータを用いた治療を提供することができる。治療は第２の時間において阻止することができ、治療制御パラメータは治療が阻止されている間の第２の時間またはほぼ第２の時間に受信した生理学的データを用いて再計算することができ、治療は再計算された治療制御パラメータを用いて提供することができる。
Patent JP-2011507698-A (JP)
Title: 凝集溶剤を含有する電極インク
IPC: H01M4/86
Filed: 2008-12-23
Abstract: ａ）固体であって、ｉ）触媒材料、及びｉｉ）ポリマー電解質を含む固体、ｂ）水性溶剤、並びにｃ）凝集溶剤、を含む触媒インクが提供される。幾つかの実施形態では、凝集溶剤はアルカン、アルケン、アミン、エーテル及び所望として置換される芳香族化合物からなる群から選択される。幾つかの実施形態では、凝集溶剤は部分フッ素化アルカン、部分フッ素化第３級アミン、完全フッ素化アルカン、及び完全フッ素化第３級アミンからなる群から選択される。もう１つの態様では、本開示は凝集溶剤を含む触媒層を含む燃料電池膜電極組立体を提供する。もう１つの態様では、本開示は、本開示の触媒インクをａ）ポリマー電解質膜、及びｂ）多孔質導電性ガス拡散層のうち１つ以上に適用する工程を含む燃料電池膜電極組立体を製造する方法を提供する。
Patent JP-2011509474-A (JP)
Title: コンピュータを動作させる方法及びシステム
IPC: G06F9/30
Filed: 2009-01-07
Abstract: 【課題】  ｅｘｅｃｕｔｅ  ｒｅｌａｔｉｖｅ命令のための方法、システム、及びプログラム製品を提供する 【解決手段】  実行時に、相対アドレスにおけるターゲット命令をフェッチ及び実行し、次いで、ｅｘｅｃｕｔｅ  ｒｅｌａｔｉｖｅ命令の後に処理を次の命令に戻す、ｅｘｅｃｕｔｅ  ｒｅｌａｔｉｖｅ命令のための方法、システム、及びプログラム製品である。相対アドレスは、プログラム・カウンタの値を符号拡張された即値フィールドに加えることによって形成される。フェッチされたターゲット命令は、ビットをターゲット命令の所定のビットに論理和演算することにより、実行前に随意的に変更される。 【選択図】      図１６
Patent JP-2011510457-A (JP)
Title: リチウムイオン電池用の混合された金属かんらん石電極材料
IPC: H01M10/052
Filed: 2009-01-21
Abstract: リチウム（Ｌｉ）、電気活性金属（Ｍ）、およびリン酸塩（ＰＯ ４ ）を含む１またはそれ以上の相を有する電気活性材料を含む正電極材料が提供される。完全にリチオ化された状態で、全体の組成は、Ｌｉ：Ｍの比が約１．０より大きく約１．３までの範囲であり、（ＰＯ ４ ）：Ｍの比が約１．０から約１．１３２の範囲であり、ＭはＣｒ、Ｍｎ、Ｆｅ、Ｃｏ、およびＮｉからなるグループから選択された１またはそれ以上の金属であり、少なくとも１つの相は、かんらん石リチウム電気活性金属リン酸塩である。幾つかの例では、電気活性かんらん石遷移金属リン酸塩と、リチウムとリン酸塩のリッチな第２相とを含み、リチウムイオン電池で使用される、複合カソード材料が開示される。
Patent JP-2011510471-A (JP)
Title: 高効率エレクトロルミネセント素子およびそれを生産するための方法
IPC: H01L51/50
Filed: 2008-01-24
Abstract: 本開示の局面は、エレクトロルミネセント素子およびそれを作製するための方法を含む。該素子は、基板と、正孔注入電極層と、エレクトロルミネセント層と、空気中で安定し、低仕事関数の材料を含む層であって、漏電電流が低減した効率的な電子注入を達成することが可能な層等の、電子注入電極層とを含む。ある実施形態では、素子は、ポリマー、例えば、極性成分（極性官能基等）を含有するポリマーと、金属ジケトナートとを含む、組成物を含む、効率的な電子注入層を含有してもよい。ある実施形態では、素子は、ポリエチレングリコールジメチルエーテルと、バリウムまたはカルシウムアセチルアセトネートとを含む、電子注入層を含有してもよい。例えば、電子注入層の堆積のための溶解ステップを採用する、そのような素子を製造する方法、ならびにエレクトロルミネセントディスプレイでの生産された素子の使用も、本明細書で提供する。
Patent JP-2011510639-A (JP)
IPC: A23L27/30
Filed: 2009-01-21
Abstract: Processes for the continuous production of fermented, trehalulose-containing beverages, in particular ready-to-drink beverages or beverage concentrates.
Patent JP-2011513427-A (JP)
Title: ｃ−ｍｅｔ及びＥＧＦＲアンタゴニストの併用療法
IPC: A61P43/00
Filed: 2009-03-06
Abstract: 本発明は概して分子生物学及び増殖因子調節の分野に関するものである。具体的には、本発明は、癌などの病態を治療するための併用療法に関する。
Patent JP-2012144307-A (JP)
Title: Multi-feed detection apparatus
Inventor: KANEKO KOICHI
IPC: B65H7/12
Filed: 2011-01-07
Abstract: PROBLEM TO BE SOLVED: To provide a multi-feed detection technique which is hardly influenced by paper thickness or the thickness of an air layer between paper sheets in a multi-feed state.SOLUTION: The multi-feed detection apparatus includes: an ultrasonic wave transmission section 30 and an ultrasonic wave reception section 40 which are placed opposite to each other across a paper conveying route; a transmission signal generation section 10 configured to control the ultrasonic wave transmission section 30 to transmit a first ultrasonic wave of a frequency f1 and a second ultrasonic wave of a frequency f2 (f2>f1); and a reception signal processing section 60 configured to determine the multi-feed state when a ratio(A1/A2) of the reception strength A1 of the first ultrasonic wave received by the ultrasonic reception section 40 to the reception strength A2 of the second ultrasonic wave received by the section 40 is less than a predetermined threshold.
Patent JP-2012146740-A (JP)
Title: Etching device and etching method
Inventor: NAKAMURA YUJI
IPC: H01L21/306
Filed: 2011-01-07
Abstract: PROBLEM TO BE SOLVED: To provide an etching device and an etching method capable of shortening processing time.SOLUTION: When a direction inclined to a horizontal plane is defined as a first direction and a direction which is roughly parallel to the horizontal plane and is roughly orthogonal to the first direction is defined as a second direction, the etching device includes: a feed roller for carrying a processing substrate along the second direction in the state of inclining it in the first direction; a swing nozzle arranged along the first direction, for discharging a liquid chemical required for etching toward the processing substrate carried by the feed roller while swinging to the front and back along the second direction; and an intermittent nozzle arranged along the second direction facing one end part positioned at the inclined upper part of the processing substrate carried in an inclined state by the feed roller, for discharging the liquid chemical required for etching toward the processing substrate at the timing that the swing nozzle reaches a front end or a back end.
Patent JP-2011092209-A (JP)
Title: Method for preserving food by using electrically charged fine water particle, and food preservation apparatus
Inventor: MAEDA YASUNARI
IPC: E04F19/08
Filed: 2011-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a method for preserving a food and a food preservation apparatus by using electrically charged fine water particles capable of sufficiently exhibiting the effects such as mildew-proofing, deodorizing, ethylene gas eliminating and moisturizing effects.  <P>SOLUTION: Water W is atomized by electrostatic atomization to form the electrically charged fine water particles M having a nano-meter size and containing activated species and the water particles are supplied to a food.  <P>COPYRIGHT: (C)2011,JPO&INPIT
Patent JP-2011072825-A (JP)
Title: Medical image diagnostic apparatus
Inventor: ADACHI KATASHI
IPC: A61B6/03
Filed: 2011-01-17
Abstract: <P>PROBLEM TO BE SOLVED: To provide a medical image diagnostic apparatus capable of substantially shortening a time for an image formation process.  <P>SOLUTION: This medical image diagnostic apparatus includes a collection means, a preprocessing means and a plurality of reconstruction means. A dividing means divides data collected by the collection means into two or more partial data. A distribution means distributes two or more partial projection data, which are generated by the preprocessing means on the basis of the two or more partial data acquired by the division, to the plurality of reconstruction means. The reconstruction means reconstruct two or more partial images on the basis of the two or more distributed partial projection data. The distribution means receives a setting request of a diagnosis region of a subject, to preferentially distribute the partial projection data corresponding to the set diagnosis region in the two or more partial projection data generated by the preprocessing means, to the plurality of reconstruction means.  <P>COPYRIGHT: (C)2011,JPO&INPIT
Patent JP-2011130466-A (JP)
Title: Mobile communication terminal
Inventor: SAWADA KAYOKO
IPC: H04M1/02
Filed: 2011-01-20
Abstract: <P>PROBLEM TO BE SOLVED: To provide a mobile communication terminal capable of an information display on a single display in a state where a first cabinet and second cabinet are closed and of keeping continuity of an image displayed across two display screens in a state where both the cabinets are open.  <P>SOLUTION: The mobile communication terminal is configured by connecting the first cabinet 1 and second cabinet 2 with each other, and a first display 11 is installed on the surface of the first cabinet 1, a second display 21 is installed on the surface of the second cabinet 2, and the first cabinet 1 and the second cabinet 2 can move relatively between a closed position where the surface of the first display 11 is covered with the second cabinet 2 and at the same time, the surface of the second display 21 is exposed and an opened position where the surface of the first display 11 and the surface of the second display 21 are aligned on the same plane and at the same time, both the displays 11, 21 are put close to each other.  <P>COPYRIGHT: (C)2011,JPO&INPIT
Patent JP-2012150407-A (JP)
Title: Koto
Inventor: MORIBE KAYOKO
IPC: G10D3/10
Filed: 2011-01-21
Abstract: PROBLEM TO BE SOLVED: To provide a compact koto has a register down to a lower register of at least 27.5 Hz or lower.SOLUTION: The koto includes a body 1 which has a head part 11 at one end and a tail part 12 at the other end; a plurality of strings 2 tensed between the head part 11 and the tail part 12; a head-side string support 3 protruded from an upper surface of the head part 11 to support the strings 2; a tail-side string support 4 protruded from the upper surface of the tail part 12 to support the strings 2; a bridge 5 mounted on the upper surface of the body 1 to support the tensed strings 2 at a suitable position and to vary intervals; a one-end lock mechanism 6 provided to one of the head part 11 and the tail part 12 and locking one-end sides of the strings 2; and a tension adjusting lock mechanism 7 provided to the other of the head part 11 and the tail part 12, and locking other-end sides of the strings 2 and adjusting tension of the strings 2. The strings 2 are metallic, and the body 1 is 150 cm or less long and has its register down to the lower register of 27.5 Hz or lower.
Patent JP-2012152173-A (JP)
Title: Blend tomato juice and method of making the same
Inventor: TAKENAKA AKIHITO
IPC: A23L19/00
Filed: 2011-01-27
Abstract: PROBLEM TO BE SOLVED: To provide tomato juice in which lycopene can be efficiently ingested, and fresh fragrance of fresh tomato to be consumed raw shows up, and to provide a method of making the same.SOLUTION: The invention relates to the tomato juice obtained by squeezing tomato for raw eating not through a heating process, and the blend tomato juice including tomato juice derived from processing tomato and having at least 5 mg/100 g of a lycopene content. The invention also relates to the blend tomato juice including at least 2% by weight and less than 50% by weight of tomato juice derived from raw eating tomato, and at least 50% by weight and less than 98% by weight of from-concentrate juice, and the blend tomato juice including at least 1μg/L of cis-3-hexanal, at least 1 μg/L of trans-2-hexanal and at least 5 mg/100 g of a lycopene content.
Patent JP-2012159530-A (JP)
Title: Method for producing toner
Inventor: MASUDA MINORU
IPC: G03G9/087
Filed: 2011-01-28
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing toner which allows toner composition liquid to be stably ejected for a long period without clogging an ejection hole when the toner composition liquid is ejected from a minute nozzle.SOLUTION: The method for producing toner includes a toner composition liquid preparation step of preparing toner composition liquid in which a toner composition containing a binder resin and releasing agent is dissolved or dispersed in an organic solvent, a filtration step of removing coarse particles in the toner composition liquid, a droplet formation step of ejecting the filtered toner composition liquid from one or more ejection holes to make the liquid into droplets, and a drying step of drying the organic solvent in the droplets of the toner composition liquid for solidifying the particles. A temperature of the toner composition liquid in the droplet formation step is higher than a temperature of the toner composition liquid in the filtration step.
Patent JP-2012157403-A (JP)
Title: Bathtub cover
Inventor: HANAI KAZUTERU
IPC: A47K3/00
Filed: 2011-01-28
Abstract: PROBLEM TO BE SOLVED: To provide a bathtub cover having a function as a bathtub cover, which is available as a table.SOLUTION: The bathtub cover is put on a top surface of a bathtub. One side surface is covered with a cushion material 8, and an outer peripheral end face is covered with an edge covering material 9. A core material 6 made of foamed polyethylene is interposed between FRP surface materials 7a and 7b. The cushion material 8 made of the foamed polyethylene is bonded to a surface of the surface material 7a which is one of the surface materials. The edge covering material 9 is made of olefinic elastomer.
Patent JP-2011221988-A (JP)
Title: Three-dimensional position posture measurement device by stereo image, method and program
Inventor: WATANABE MASAHARU
IPC: G06T7/60
Filed: 2011-02-08
Abstract: PROBLEM TO BE SOLVED: To provide a device, a method and a program capable of measuring a three-dimensional position posture of an object even when stereo erroneous correspondence data is included.SOLUTION: This three-dimensional position posture measurement device includes an input part 4 and an operation part 1 which receive image data obtained by imaging an object by imaging apparatuses C1-C3, the operation part calculates a three-dimensional restoration point set and a feature quantity set regarding a pair of two sheets of image data selected without overlapping, calculates all three-dimensional restoration point set and all feature quantity sets by adding all of the three-dimensional restoration point sets and the feature quantity sets regarding each pair, determines a point corresponding to a model point of the object among the three-dimensional restoration point sets by collating a model feature quantity set regarding model data of the object with all feature quantity sets, the three-dimensional restoration point set includes three-dimensional position information of a segment obtained by dividing a boundary line of the object in the image data, and the feature quantity set includes the three-dimensional information regarding an apex of the segment.
Patent JP-2012170212-A (JP)
Title: Inverted two-wheel vehicle
Inventor: KAKO KO
IPC: B62K3/00
Filed: 2011-02-14
Abstract: PROBLEM TO BE SOLVED: To restrain useless power consumption caused by variations of detection data due to individual difference between a plurality of state sensors.SOLUTION: An inverted two-wheel vehicle includes a first motor 4 having a first winding wire 22 and a second wiring wire 23 both mutually electrically-insulated, a first drive system 6, and a second drive system 7. The first drive system 6 has a first state sensor 12 and a first control circuit 11. The second drive system 7 has a second state sensor 17 and a second drive circuit 16. First detection data of the first state sensor 12 of the first drive system 6 and second detection data of the second state sensor 17 of the second drive system 7 are shared between the first drive system 6 and the second drive system 7. The first control circuit 11 of the first drive system 6 controls power supply to the first winding wire 22 of the first motor 4 based on the shared detection data. The second control circuit 16 of the second drive system 7 controls power supply to the second wiring wire 23 of the first motor 4 based on the shared detection data.
Patent JP-2012169117-A (JP)
Title: Socket
Inventor: SAKIYAMA SHIN
IPC: H01R33/76
Filed: 2011-02-14
Abstract: PROBLEM TO BE SOLVED: To provide a socket capable of reducing a distance between terminals.SOLUTION: In the socket, a terminal 3 is formed into a plate-like shape and includes a base part 32 and an elastic piece 34 that extends from the base part 32, comes into contact with a spherical electrode 101e formed on the underside of a semiconductor element, and is elastically deformed in the in-plane direction. A plate-like member 41 formed into a plate-like shape overlaps the base part 32 to hold the terminal 3. A frame 2 supports the plate-like member 41 so that the terminal 3 stands on a circuit board.
Patent JP-2012166668-A (JP)
Title: Door device
Inventor: KONDO FUMITAKA
IPC: E05F15/14
Filed: 2011-02-14
Abstract: PROBLEM TO BE SOLVED: To reduce the cost for maintenance, without replacement of parts or maintenance frequently.SOLUTION: A door device has: a box B fixed on a place of installation; a door body D housed in the box B; and a drive mechanism P for making the door body D come in/out to/from the box B. The drive mechanism P includes: a rotating body 2 rolling caused by a drive of a driving source 1; and a rail 3 engaging with the rotating body 2 and guiding the rotating body 2 along a coming in/out direction of the door body D.
Patent JP-2012166923-A (JP)
Title: Sheave block of cargo handling device for ship and cargo handling device for ship using the same
Inventor: MIURA MASAYA
IPC: B66D3/04
Filed: 2011-02-16
Abstract: PROBLEM TO BE SOLVED: To provide a structure of a sheave block that prevents a wire from abutting on one side of the sheave block and is free from the uneven wear of the sheave block in a derrick device and the like of a marine cargo handling device.SOLUTION: The sheave block 3 of the cargo handling device for a ship includes a wire guide ring 1 which is concentric therewith and rotatably supported in one or two directions of an outer circumference via a ring support member 2 having a predetermined length, and which a moving wire penetrates.
Patent JP-2012165990-A (JP)
Title: Carpet and method for manufacturing carpet
Inventor: INOUE MITSUHARU
IPC: D06N7/00
Filed: 2011-02-17
Abstract: PROBLEM TO BE SOLVED: To provide a method for manufacturing a carpet capable of creating a desired pattern based on a free design.SOLUTION: The method for manufacturing a carpet includes the process for making a pile greige 4 by tufting crimped yarns 2 made up of spun-dyed synthetic fiber multifilament and dyeable unspun-dyed synthetic fiber multifilament on a base fabric 3, and the process for making a backing layer 8 on the back side of the pile greige 4. It also includes the process for creating a desired pattern on the pile face of the pile greige 4 by print-dyeing the pile greige 4 before or after making the backing layer 8.
Patent JP-2012174340-A (JP)
Title: Nonaqueous electrolyte and lithium ion secondary battery
Inventor: MIZUNO KAYO
IPC: H01M10/052
Filed: 2011-02-17
Abstract: PROBLEM TO BE SOLVED: To suppress deterioration due to redox decomposition of a nonaqueous electrolyte in a lithium ion secondary battery using a positive electrode active material composed of a lithium manganese based oxide containing a lithium (Li) element and a tetravalent manganese (Mn) element and having a crystal structure belonging to a layered rock-salt structure.SOLUTION: Since about 1.0 mass% of 1,3-propane sulton is added into a nonaqueous electrolyte, storage capacity and recovery capacity are enhanced when a lithium ion secondary battery is stored at high temperature, and increase in the internal resistance is suppressed.
Patent JP-2012171811-A (JP)
Title: Method for producing silicon carbide single crystal epitaxial wafer
Inventor: OKUNO KENICHIRO
IPC: C23C16/52
Filed: 2011-02-17
Abstract: PROBLEM TO BE SOLVED: To provide a method for producing a silicon carbide single crystal epitaxial wafer, with which occurrence of a defect of an epitaxial film originating from a work-affected layer is suppressed while reducing time periods required for removal treatment of the work-affected layer.SOLUTION: In producing a silicon carbide single crystal epitaxial wafer, a silicon carbide single crystal substrate 100 is heated to be 1600°C or more, a raw material gas is supplied so that a C/Si ratio is made to be 1.0 or less, and a growth rate of the epitaxial film is controlled to be 2.0 μm/h or less. At this time, the growth rate of the epitaxial film is controlled to be 2.0 μm/h or less by adjusting the flow rate of a carrier gas to be 50 slm or more, adjusting the flow rate of monosilane as the raw material gas to be 20 sccm or less, and adjusting the pressure of the space, where the silicon carbide single crystal substrate 100 of the growth apparatus is arranged, to be 100 mbar or more.
Patent JP-2011095785-A (JP)
Title: Liquid crystal display device
Inventor: OTA AKIO
IPC: G02F1/1368
Filed: 2011-02-18
Abstract: <P>PROBLEM TO BE SOLVED: To provide a liquid crystal display device which hardly brings about crosstalk or the like and has a small power consumption and is prevented from electrostatic discharge.  <P>SOLUTION: The liquid crystal display device includes: a plurality of scanning electrodes 8 and a plurality of signal electrodes 9 arranged in a matrix on a first insulating substrate 2; a plurality of pixel electrodes 10 disposed near intersections between the scanning electrodes 8 and the signal electrodes 9; switching elements 11 connected to the scanning electrodes 8, the signal electrodes 9, and the pixel electrodes 10 respectively; a plurality of first common electrodes C1 to C220 disposed on the first insulating substrate; auxiliary capacitors 12 connected between respective pixel electrodes 10 and respective first common electrodes C1 to C220; and a second common electrode 13 connected to the first common electrodes C1 to C220. At intersections between respective scanning electrodes 8 and the second common electrode 13, a first insulating layer and a second insulating layer are laminated between electrodes 8 and 13.  <P>COPYRIGHT: (C)2011,JPO&INPIT
Patent JP-2012172048-A (JP)
Title: Method for producing polyalkylene ether glycol
Inventor: KONISHI NORIKAZU
IPC: C08G65/26
Filed: 2011-02-21
Abstract: PROBLEM TO BE SOLVED: To provide an industrially advantageous method for producing high-quality polyalkylene ether glycol with an excellent hue.SOLUTION: In the method for producing polyalkylene ether glycol, when the polyalkylene ether glycol is produced by ring-opening polymerization of a cyclic ether carried out in the presence of a carboxylic acid anhydride and a catalyst, absorbance in measurement of the carboxylic acid anhydride at one wavelength selected from measurement wavelength 300-330 nm based on a UV spectrum is ≤0.10.