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    • 1. 发明申请
    • Electrode for Electrolysis and Method for Producing Aqueous Solution of Quaternary Ammonium Hydroxide Using the Same
    • 用于电解的电极和使用其的产生第四系氢氧化铵水溶液的方法
    • US20080035491A1
    • 2008-02-14
    • US11663005
    • 2005-09-08
    • Yoshiro OhtaToshitsura Cho
    • Yoshiro OhtaToshitsura Cho
    • C25B1/00B05D5/12C25B11/00C25B13/00
    • C22C13/00C25B1/00C25B11/0478C25B11/0484
    • Provided is an electrode for electrolysis with excellent corrosion resistance and durability which can be used sustainably in the production of a high-purity quaternary ammonium hydroxide by the electrolysis of a quaternary ammonium inorganic acid salt in an electrolytic cell partitioned by a cation exchange membrane on a commercial scale with reduced electric power consumption at low cost. The electrode for electrolysis is useful for the production of a quaternary ammonium hydroxide by the electrolysis of a quaternary ammonium inorganic acid salt in an electrolytic cell partitioned by a cation exchange membrane and comprises an electrode base material of an electrically conductive metal, an electrode active layer containing an electrode active material covering the electrode base material, and an intermediate layer of a mixed oxide of an oxide of at least one kind of metal selected from In, Ir, Ta, Ti, Ru, and Nb and an oxide of Sn disposed between the electrode base material and the electrode active layer.
    • 本发明提供一种电解电极,具有优异的耐腐蚀性和耐久性,可以通过在阳离子交换膜分隔的电解槽中电解季铵无机酸盐,在高纯度季铵氢氧化物的制造中可持续使用 商业规模,低成本降低电力消耗。 用于电解的电极可用于通过在由阳离子交换膜分隔的电解槽中电解季铵无机酸盐来生产季铵氢氧化物,并且包括导电金属的电极基材,电极活性层 包含覆盖所述电极基材的电极活性物质,以及选自In,Ir,Ta,Ti,Ru和Nb中的至少一种金属的氧化物的混合氧化物的中间层和Sn之间的Sn的氧化物 电极基材和电极活性层。
    • 2. 发明授权
    • Method of processing organic quaternary ammonium hydroxide-containing
waste liquid
    • 有机季铵氢氧化物废液处理方法
    • US5439564A
    • 1995-08-08
    • US149827
    • 1993-11-10
    • Shumpei ShimizuToshitsura ChoShigeo Iiri
    • Shumpei ShimizuToshitsura ChoShigeo Iiri
    • B01J39/04C02F1/469B01D61/42
    • B01J39/04C02F1/469Y10S423/14
    • The invention is a method of processing a waste liquid containing at least an organic quaternary ammonium hydroxide. The waste liquid is brought into contact with a cation-exchanging material so as to make the organic quaternary ammonium ions adsorbed by the material to thereby remove the ions from the liquid (adsorbing step), and optionally the cation-exchanged water obtained by the contact is again processed to separate and remove resist peelings and surfactants therefrom. The invention is also a method of processing the organic quaternary ammonium hydroxide-containing waste liquid for recovering a valuable substance of the organic quaternary ammonium hydroxide therefrom. The method comprises the adsorbing step and an eluting step of bringing an eluent into contact with the cation-exchanging material that has adsorbed the organic quaternary ammonium ions so as to elute the ions from the material followed by an electrolyzing step of electrolyzing the eluate obtained in the eluting step to recover an aqueous solution of the organic quaternary ammonium hydroxide. The anodic liquid drawn from the electrolytic cell in the electrolyzing step may be re-circulated to the eluting step to be used as an eluent therein.By the invention, an organic quaternary ammonium hydroxide-containing waste liquid may be processed efficiently and inexpensively to give a low-COD, clean processed water, which may be directly discharged into rivers and others. If desired, the valuable substance of the organic quaternary ammonium hydroxide may be recovered efficiently and inexpensively at a high purity level.
    • 本发明是一种处理至少含有有机季铵氢氧化物的废液的方法。 使废液与阳离子交换材料接触,以使有机季铵离子被材料吸附,从而从液体中除去离子(吸附步骤),任选地通过接触获得的阳离子交换水 再次加工以分离并除去抗蚀剂剥离物和表面活性剂。 本发明也是一种处理有机季铵氢氧化物废液的方法,用于从其中回收有机季铵氢氧化物的有价值物质。 该方法包括吸附步骤和洗脱步骤,使洗脱液与吸附有机季铵离子的阳离子交换材料接触,以从材料中洗脱离子,然后电解所得的洗脱液的电解步骤 用于回收有机氢氧化季铵水溶液的洗脱步骤。 在电解步骤中从电解池中抽出的阳极液体可以再循环至洗脱步骤以用作其中的洗脱剂。 通过本发明,可以有效地且廉价地加工有机季铵氢氧化物废液,以得到可以直接排放到河流等中的低COD,清洁的加工水。 如果需要,有机季铵氢氧化物的有价值物质可以以高纯度水平有效和廉价地回收。
    • 6. 发明申请
    • METHOD FOR PURIFYING ALKALINE TREATMENT FLUID FOR SEMICONDUCTOR SUBSTRATE AND A PURIFICATION APPARATUS
    • 纯化半导体基板的碱处理液和纯化装置的方法
    • US20130174868A1
    • 2013-07-11
    • US13824946
    • 2011-09-26
    • Hisashi MuraokaToshitsura Cho
    • Hisashi MuraokaToshitsura Cho
    • B01J20/10
    • B01J20/10B01J20/0251B01J20/28035H01L21/02052H01L29/1608
    • Provided are a purification method and purification apparatus for an alkaline treatment liquid for a semiconductor substrate, which use adsorption purification means that can purify various alkaline treatment liquids to be used for treating semiconductor substrates for various purposes so as to have an ultrahigh purity, in particular, an Fe concentration in a ppq region, and that is excellent in chemical resistance and mechanical strength. The adsorption purification means is purification means for an alkaline treatment liquid for treating a semiconductor substrate for various purposes at the time of producing, for example, a semiconductor substrate or a semiconductor device. In the purification method and purification apparatus for an alkaline treatment liquid for a semiconductor substrate, an alkaline treatment liquid is brought into contact with silicon carbide crystal surfaces in the absorption purification means, for example, an alkaline treatment liquid is allowed to flow through a gap between adsorbing plate laminates (2) whose both surfaces are CVD silicon carbide surfaces, thereby removing metal impurities contained in the alkaline treatment liquid through adsorption of the metal impurities to the silicon carbide crystal surfaces.
    • 提供一种用于半导体基板的碱性处理液的净化方法和净化装置,其使用能够净化用于各种目的的半导体基板处理的各种碱处理液以具有超高纯度的吸附净化装置,特别是 ,ppq区域的Fe浓度,耐化学性和机械强度优异。 吸附净化装置是用于在制造例如半导体衬底或半导体器件时用于处理用于各种目的的半导体衬底的碱性处理液的净化装置。 在用于半导体衬底的碱性处理液的净化方法和净化装置中,碱性处理液与吸收净化装置中的碳化硅晶体表面接触,例如使碱性处理液体流过间隙 在两面为CVD碳化硅表面的吸附板层叠体(2)之间,通过将金属杂质吸附到碳化硅晶体表面,除去碱处理液中所含的金属杂质。
    • 8. 发明授权
    • Method of processing organic quaternary ammonium hydroxide-containing
waste liquid
    • US5545309A
    • 1996-08-13
    • US438962
    • 1995-05-11
    • Shumpei ShimizuToshitsura ChoShigeo Iiri
    • Shumpei ShimizuToshitsura ChoShigeo Iiri
    • B01J39/04C02F1/469C02F1/461
    • B01J39/04C02F1/469Y10S423/14
    • The invention is a method of processing a waste liquid containing at least an organic quaternary ammonium hydroxide. The waste liquid is brought into contact with a cation-exchanging material so as to make the organic quaternary ammonium ions adsorbed by the material to thereby remove the ions from the liquid (adsorbing step), and optionally the cation-exchanged water obtained by the contact is again processed to separate and remove resist peelings and surfactants therefrom. The invention is also a method of processing the organic quaternary ammonium hydroxide-containing waste liquid for recovering a valuable substance of the organic quaternary ammonium hydroxide therefrom. The method comprises the adsorbing step and an eluting step of bringing an eluent into contact with the cation-exchanging material that has adsorbed the organic quaternary ammonium ions so as to elute the ions from the material followed by an electrolyzing step of electrolyzing the eluate obtained in the eluting step to recover an aqueous solution of the organic quaternary ammonium hydroxide. The anodic liquid drawn from the electrolytic cell in the electrolyzing step may be re-circulated to the eluting step to be used as an eluent therein.By the invention, an organic quaternary ammonium hydroxide-containing waste liquid may be processed efficiently and inexpensively to give a low-COD, clean processed water, which may be directly discharged into rivers and others. If desired, the valuable substance of the organic quaternary ammonium hydroxide may be recovered efficiently and inexpensively at a high purity level.
    • 10. 发明授权
    • Process for preparing refractory molded articles and binders therefor
    • 制备耐火模塑制品及其粘合剂的方法
    • US5569320A
    • 1996-10-29
    • US365111
    • 1994-12-28
    • Nobuyoshi SasakiTetsuya YokokawaYoshikazu HashimotoYoshiro OhtaHideo Sekiguchi
    • Nobuyoshi SasakiTetsuya YokokawaYoshikazu HashimotoYoshiro OhtaHideo Sekiguchi
    • B22C1/20B22C9/04B22C9/10C04B35/622C04B35/63C04B35/632C09K3/00
    • C04B35/6325B22C1/205
    • This invention provides a process for preparing a refractory molded article comprising the steps of (a) forming a molded article matrix from an aggregate and the first binder, (b) impregnating the molded article matrix formed in step (a) with the second binder consisting of an alcoholic solution of one kind or two or more kinds of metal alkoxides selected from alkoxides of metals of Group 4A or Group 4B (excepting carbon) and Group 3A or Group 3B of the periodic table and their partial hydrolysates and an alkaline compound of alkali metal or alkaline earth metal (one kind or a mixture of two or more kinds selected from alkoxides, hydroxides and salts of the metal) and (c) drying and firing the molded article matrix at high temperature and also provides a binder for the preparation of such refractory molded article. The invention provides a process for preparing a refractory molded article and a binder with advantages such as casting of a molten metal without generation of gases and prevention of such defects as blow holes, good flow of a molten metal enabling thin-wall casting of steel, reduced requirement of riser in steel casting compared with cold casting, good dimensional precision, wide applicability to materials ranging from light alloy to steel, and an inner part for adjustment of strength and improvement of crumbling characteristics.
    • 本发明提供一种制备耐火模塑制品的方法,包括以下步骤:(a)从骨料和第一粘合剂形成模塑制品基质,(b)将步骤(a)中形成的模塑制品基质浸渍在第二粘合剂中, 的选自元素周期表的4A族或4B族金属(除了碳)和3A族或3B族的金属的醇的一种或两种以上的金属醇盐的醇溶液及其部分水解物和碱的碱金属化合物 金属或碱土金属(一种或选自醇盐,氢氧化物和金属盐的两种或多种的混合物)和(c)在高温下干燥和焙烧模塑制品基质,并且还提供用于制备 这种耐火成型品。 本发明提供了一种制备耐火成型体和粘合剂的方法,其优点是熔融金属的铸造而不产生气体,并且防止诸如气孔的缺陷,能够进行钢的薄壁铸造的熔融金属的良好流动, 与冷铸相比,铸钢中提升管的要求降低,尺寸精度高,适用范围广,适用于从轻合金到钢的材料,以及用于调整强度和改善破碎特性的内部部件。