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1. 发明专利

JPWO2012074074A1 精製アルカリ金属塩の分離回収方法有权
公开(公告)号：JPWO2012074074A1
公开(公告)日：2014-05-19
申请号：JP2012515241
申请日：2011-12-01
申请人：東レ株式会社
发明人：佐々木　崇夫 , 崇夫佐々木 , 谷口　雅英 , 雅英谷口 , 寛生高畠 , 寛生高畠 , 曽根　三郎 , 三郎曽根
IPC分类号： C01D1/28 , B01D61/02 , B01D61/12 , C02F1/44
CPC分类号： C01D5/16 , B01D61/027 , B01D69/02 , B01D69/10 , B01D71/56 , B01D71/68 , B01D2325/20 , C01D3/04 , C01D3/14 , C01D15/04 , C01D15/08 , C01P2006/80 , C02F1/26 , C02F1/265 , C02F2103/08 , Y02W10/37
摘要：本発明は、アルカリ金属塩水溶液から精製アルカリ金属塩を分離回収する方法であって、0.75MPaの操作圧力で25℃、pH6.5の1000ppmグルコース水溶液および25℃、pH6.5の1000ppmイソプロピルアルコール水溶液をそれぞれ透過させた時のグルコース除去率及びイソプロピルアルコール除去率が下式(I)及び(II)を同時に満足する分離膜で精製阻害物質を除去する処理工程を含むことを特徴とする、精製アルカリ金属塩の分離回収方法に関する:グルコース除去率≧90%・・・(I)、グルコース除去率−イソプロピルアルコール除去率≧30%・・・(II)。

2. 发明专利

JP2000203828A REMOVAL OF NICKEL IN POTASSIUM HYDROXIDE 失效
公开(公告)号：JP2000203828A
公开(公告)日：2000-07-25
申请号：JP37278798
申请日：1998-12-28
申请人： TOAGOSEI CO LTD
发明人： KAWAGUCHI TOSHIHIRO , HATTORI SOJI
IPC分类号： B01D15/00 , B01D37/02 , B01J20/20 , C01D1/28 , C02F1/62
摘要： PROBLEM TO BE SOLVED: To provide a method for removing nickel in potassium hydroxide, enabling the easy removal of the nickel in the potassium hydroxide in a short time to give the highly pure potassium hydroxide by filtering an aqueous potassium hydroxide solution containing the nickel by means of a filtration device pre-coated with activated carbon. SOLUTION: By the method, the nickel eluted on the concentration of the potassium hydroxide and contained in a concentration of 0.1 ppm order can efficiently be removed to give a concentration of 0.01 ppm order. The activated carbon used as the pre-coating agent comprises porous carbon which has a large adsorption capacity and is obtained by carbonizing coconut shells, timber, charcoal, lignite, etc. In particular, activated carbon obtained from the coconut shells has an excellent nickel-adsorbing capacity. When a filtration device used herein is a filtration device pre-coated with the activated carbon, the filtration is especially not limited. The concentration of the potassium hydroxide containing the nickel, the amount of the used activated carbon, the flow rate and volume of the aqueous potassium hydroxide solution passed through the filtration device, etc. are especially not limited, but, for example, 100-2,000 g/m2 of coconut shell activated carbon is used for removing 0.1 ppm of nickel in a 50% aqueous potassium hydroxide solution.

3. 发明专利

JP2000507540A 失效
公开(公告)号：JP2000507540A
公开(公告)日：2000-06-20
申请号：JP53496897
申请日：1997-03-24
IPC分类号： C01D1/04 , C01D1/28 , C01F7/06 , C22B3/24 , C22B7/00 , C22B26/10

4. 发明专利

JPH10310883A METHOD FOR PURIFYING ALKALI SOLUTION AND METHOD FOR ETCHING SEMICONDUCTOR WAFER 失效
公开(公告)号：JPH10310883A
公开(公告)日：1998-11-24
申请号：JP3992198
申请日：1998-02-23
申请人： SHINETSU HANDOTAI KK
发明人： UCHIYAMA ISAO , TAKAMATSU HIROYUKI , AJITO TOSHIO
IPC分类号： C02F1/70 , C01D1/28 , C23F1/32 , C23F1/46 , H01L21/306
摘要： PROBLEM TO BE SOLVED: To etch a semiconductor wafer without deteriorating the quality by dissolving a reducing agent having a baser oxidation potential than the reversible potential of metallic ions existing in an alkali soln. so that the metallic ions are made nonionic. SOLUTION: The strong reducing agent having an extremely base oxidation potential is, e.g. a hypophosphite, a dithionite, a boron hydride compd., aldehyde or a hydrazine compd. Two or more such compds. may be used in a mixed state. The pref. amt. of the reducing agent added is >=2.5 g/l in the case of the dithionite. Ions of Ni, Cu, Cr, Fe, etc., are made nonionic. It is important that Ni ions having a high rate of diffusion in a silicon crystal is made nonionic. An impurity metal in the solid state may exist in the alkali soln.

5. 发明专利

JPH0621031B2 失效
公开(公告)号：JPH0621031B2
公开(公告)日：1994-03-23
申请号：JP88390
申请日：1990-01-05
申请人： KAGAKU GIJUTSUCHO MUKIZAISHITSU KENKYUSHOCHO
发明人： KOMATSU MASARU , FUJIKI YOSHINORI , SASAKI TAKAYOSHI
IPC分类号： B01D15/04 , B01J39/02 , B01J39/10 , C01D1/28 , C01D1/32 , C01D3/14 , C01D3/16 , C01D17/00

6. 发明专利

JPH01160818A PREPARATION OF REAGENT 失效
公开(公告)号：JPH01160818A
公开(公告)日：1989-06-23
申请号：JP31855387
申请日：1987-12-18
申请人： NEC CORP
发明人： HASE USHIO
IPC分类号： C01D1/28
摘要： PURPOSE:To obtain a purified alkali hydroxide of extremely high purity useful as an absorptive for acidic gas which is capable of lowering the quantitative limit when trace amounts of acidic gas in a gas mass is to be analysed, by passing an alkali hydroxide solution through a cation exchange resin to effect exchange adsorption followed by specific treatment. CONSTITUTION:An alkali hydroxide solution to be prepared is passed through a column packed with a cation exchange resin to effect exchange adsorption followed by throughly washing with pure water to prepare an anionic impurities- free M -type cation exchange column. Thence, ammonia water purified by distillation is passed through this column to make an ion exchange to collect the effluence followed by heating this effluence in an acidic gas-free atmosphere to eliminate the NH3 through evaporation, thus obtaining the objective purified alkali hydroxide solution.

7. 发明专利

JPS6296316A PURIFICATION OF CAUSTIC SODA 失效
公开(公告)号：JPS6296316A
公开(公告)日：1987-05-02
申请号：JP23528685
申请日：1985-10-23
申请人： ASAHI CHEMICAL IND
发明人： FUKUMA YASUNOSHIN
IPC分类号： C01D1/04 , C01D1/28 , C07C29/00 , C07C31/125
摘要： PURPOSE:To readily obtain a high-purity aqueous solution of NaOH, by bringing a secondary or tertiary alcohol into contact with an aqueous solution of NaOH in a high concentration to give a clathrate compound and adding water to separate the clathrate compound into phases. CONSTITUTION:A >=5C secondary or tertiary alcohol, e.g. 4-methyl-2-pentanol, is brought into contact with an aqueous solution of NaOH in about 40-60wt% concentration to produce a clathrate compound consisting of the alcohol, NaOH and water, which is then separated from the mother liquor by centrifugal separation, etc. Water is then added to the separated crystals of the clathrate compound and, as necessary, the mixture is heated to separate the clathrate compound into the alcohol phase and aqueous solution phase of NaOH. The aimed purified aqueous solution of NaOH is obtained from the lower phase. The alcohol in the upper phase is circulated for use. The heat energy required for purification can be reduced by this method.

8. 发明专利

JPS61263942A NOVEL ALKALI METALLIC HYDROXIDE TAKING COMPLEX OF ACETYLENE ALCOHOL 失效
公开(公告)号：JPS61263942A
公开(公告)日：1986-11-21
申请号：JP10726485
申请日：1985-05-20
申请人： ASAHI CHEMICAL IND
发明人： TODA FUMIO , TANAKA KOICHI
IPC分类号： C07C33/042 , C01D1/04 , C01D1/28 , C01D15/02 , C07C27/00 , C07C29/00 , C07C33/044 , C07C33/28 , C07C33/30 , C07C35/06 , C07C35/17 , C07C35/21 , C07C35/38 , C07C35/52 , C07C67/00 , C07F1/00
摘要： NEW MATERIAL:An alkali metallic hydroxide taking complex of acetylene alcohol wherein a host compound, an acetylene alcohol compound shown by the formula I [R is alkyl or aryl; R is H, alkyl, aryl, or R and R may form group shown by the formula II, formula III, or formula IV (X is H, halogen, or alkyl); R is H, group shown by the formula V (R and R are R and R ) or formula VI (R and R are R and R )] takes an alkali metallic hydroxide. EXAMPLE:A complex wherein caustic soda is taken in a host compound shown by the formula VII. USE:The titled complex can be directly used in the production of high-purity caustic soda and is extremely useful for rationalizing the whole processes of its production. PREPARATION:An acetylene alcohol compound shown by the formula I is used as a host compound, is brought into contact with an aqueous solution of an alkali metallic hydroxide to give crystal wherein the host compound takes the alkali metal hydroxide. Further the prepared complex is treated with a proper organic solvent so that it is decomposed to given an alkali metallic hydroxide as a solid substance.

9. 发明专利

JPS5638528B2 失效
公开(公告)号：JPS5638528B2
公开(公告)日：1981-09-07
申请号：JP4908676
申请日：1976-04-27
IPC分类号： B01D17/09 , C01B7/00 , C01D1/28 , C01D3/14 , C01F3/00 , C01F5/26 , C01F11/20 , C01G9/04 , C01G11/00

10. 发明专利

JPS5426998A PROCESS FOR RECOVERING MERCURY IN AQUEOUS CAUSTIC ALKALI SOLUTION 失效
公开(公告)号：JPS5426998A
公开(公告)日：1979-02-28
申请号：JP9310177
申请日：1977-08-02
申请人： OKAYAMA KASEI KK
发明人： SANO HIROSHI , FUNABASHI TADAHIKO , NOGUCHI MICHIYA
IPC分类号： C25B1/42 , C01D1/28 , C22B43/00 , C25B1/36

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