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公开(公告)号：KR1020040013647A
公开(公告)日：2004-02-14
申请号：KR1020020046657
申请日：2002-08-07
Applicant: 대정화금주식회사
IPC: C01G23/04
CPC classification number: C01G23/006 , C01P2004/64 , C01P2006/40
Abstract: PURPOSE: Provided is a simplified method for preparing an amorphous strontium titanate precursor, from which strontium titanate ultrafine spherical particles having uniform Sr-Ti bonds and a narrow particle size distribution are obtained. CONSTITUTION: The method for preparing an amorphous strontium titanate(SrTiO3) precursor comprises: dissolving 1 mol of strontium nitrate(Sr(NO3)2) and 9-20 mol of urea(CO(NH2)2) into the least amount of water to form a mixed solution A; mixing 1 mol of titanium tetrachloride(TiCl4) with 4-6 mol of nitric acid(HNO3) and heating the mixture to form a mixed solution B; mixing the mixed solution A with the mixed solution B and carrying out the combustion of the resultant mixture at a furnace maintained at a temperature of 380-450 deg.C.
Abstract translation: 目的：提供一种制备无定形钛酸锶前体的简化方法，由此获得具有均匀的Sr-Ti键并且具有窄的粒度分布的钛酸锶超细球形颗粒。 构成：制备无定形钛酸锶（SrTiO 3）前体的方法包括：将1mol硝酸锶（Sr（NO 3）2）和9-20mol尿素（CO（NH 2）2）溶解到最少量的水中 形成混合溶液A; 将1摩尔四氯化钛（TiCl 4）与4-6摩尔硝酸（HNO 3）混合并加热混合物形成混合溶液B; 将混合溶液A与混合溶液B混合，并在保持在380-450℃温度的炉中进行所得混合物的燃烧。
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公开(公告)号：KR1020040000799A
公开(公告)日：2004-01-07
申请号：KR1020020035750
申请日：2002-06-25
Applicant: 대정화금주식회사
IPC: G01N31/16
Abstract: PURPOSE: A negative electrode solution of a two-pack type reagent for the Karl-Fisher coulometric titration and a two-pack type reagent containing the negative electrode solution for the determination of moisture content are provided, to reduce the manufacturing cost by employing choline chloride instead of expensive diethanolamine·HCl at a negative electrode solution. CONSTITUTION: The negative electrode solution comprises 1.5-3 mol of imidazole; 13.5-25.0 g of iodine; 63-66.5 g of choline chloride; about 1-2 mol of dry sulfurous acid gas; and the balance volume of a solvent per 1,000 mL of the total volume. Preferably the solvent is methanol. The two-pack type reagent comprises 3-5 vol% of a positive electrode solution; and 100 vol% of the negative electrode solution. Preferably the positive electrode solution comprises 100-105 g of imidazole; 13-15 g of iodine; about 1-2 mol of dry sulfurous acid gas; and the balance volume of a solvent per 500 mL of the total volume. Preferably the solvent is methanol.
Abstract translation: 目的：提供用于Karl-Fisher电量滴定的双组分试剂的负极溶液和含有用于测定水分含量的负极溶液的双组分试剂，以通过使用氯化胆碱来降低制造成本 而不是在负极溶液中昂贵的二乙醇胺·HCl。 构成：负极溶液含有1.5-3mol咪唑; 13.5-25.0克碘; 63-66.5克氯化胆碱; 约1-2摩尔干硫酸气; 和每1000mL总体积的溶剂的平衡体积。 溶剂优选为甲醇。 双组分试剂含有3-5vol％的正极溶液; 和100vol％的负极溶液。 优选地，正极溶液包含100-105g咪唑; 13-15克碘; 约1-2摩尔干硫酸气; 和每500mL总体积的溶剂的平衡体积。 溶剂优选为甲醇。
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公开(公告)号：KR1020100120861A
公开(公告)日：2010-11-17
申请号：KR1020090039710
申请日：2009-05-07
Applicant: 대정화금주식회사
IPC: C01B33/193 , B01D15/08
CPC classification number: C01B33/193 , B01J20/103 , B01J20/28004 , B01J20/28061 , B01J20/28069 , C01P2004/32 , C01P2004/61 , C01P2006/12 , C01P2006/14 , C01P2006/16
Abstract: PURPOSE: A method for manufacturing high purity spherical silica for chromatography is provided to control a surface, an air gap volume, and an air gap diameter. CONSTITUTION: An emulsion is formed by stirring an emulsifying agent of 1 to 20 weight, sodium silicate of 100 weight, and organic solvent of 50 to 200 weight(S1). Silica dispersion solutions are formed by reacting the emulsion with the reactive materials in aqueous solvents at 20 to 80 degrees centigrade for 5 to 40 hours(S2). Silica particles are obtained by neutralizing and filtering silica dispersion solutions(S3). Metal ions are removed from the silica particles by processing silica particles with acid(S4). High purity spherical silica particles are obtained by cleaning and drying the silica particles processed with acid(S5).
Abstract translation: 目的：提供用于制备用于色谱法的高纯度球形二氧化硅的方法以控制表面，气隙体积和气隙直径。 构成：通过搅拌1〜20重量份的乳化剂，100重量份的硅酸钠和50〜200重量份的有机溶剂（S1），形成乳液。 二氧化硅分散溶液通过使乳液与反应性物质在20至80摄氏度的水性溶剂中反应5至40小时而形成（S2）。 通过中和和过滤二氧化硅分散液获得二氧化硅颗粒（S3）。 通过用酸处理二氧化硅颗粒，从二氧化硅颗粒中除去金属离子（S4）。 通过清洗和干燥用酸处理的二氧化硅颗粒获得高纯度球形二氧化硅颗粒（S5）。
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公开(公告)号：KR100734178B1
公开(公告)日：2007-07-02
申请号：KR1020060089461
申请日：2006-09-15
Applicant: 대정화금주식회사
Abstract: Provided is a process for preparing zinc oxide powder with uniform particle size through a single-step of surface treatment and the preparation of zinc oxide, to thereby simplify the overall process. The process for preparing zinc oxide powder comprises the steps of: mixing 5-10wt.% silicon group surface treatment agent and 0.5-1.5wt% of binder in presence of 100wt.% of an organic solvent, and blending the resulting solution with 300-700wt% acidic solution; neutralizing, at 10-20 deg.C, the acidic mixture by slowly adding an alkaline solution at speed of 0.5-1.0wt.%/min with respect to a total quantity of the alkaline solution to be added; and performing a hydrothermal process at 80-100deg.C for 20-30 hours. The alkaline solution is used at an amount of 500-1000wt.% of 100wt.% of the organic solvent.
Abstract translation: 本发明提供一种通过一步表面处理和氧化锌的制备来制备具有均匀粒径的氧化锌粉末的方法，从而简化了整个过程。 制备氧化锌粉的方法包括以下步骤：在100重量％有机溶剂存在下，将5-10重量％硅基表面处理剂和0.5-1.5重量％粘合剂混合，并将所得溶液与300- 700wt％酸性溶液; 在10-20℃下，通过相对于待加入的碱性溶液总量以0.5-1.0重量％/分钟的速度缓慢加入碱性溶液来中和酸性混合物; 并在80-100℃下进行20-30小时的水热过程。 碱溶液的用量为100重量％有机溶剂的500-1000重量％。
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Patent Agency Ranking
公开(公告)号：KR1020060122452A
公开(公告)日：2006-11-30
申请号：KR1020050044939
申请日：2005-05-27
CPC classification number: C01G45/02 , C01G45/1221 , C01P2004/61 , C01P2006/11 , C01P2006/40 , H01M4/505 , H01M10/052 , Y02E60/12
Abstract: Provided are a manganese oxide prepared by using coprecipitation, its preparation method, a spinel type positive electrode active material for a lithium secondary battery which is high in structural stability at a high temperature and is improved in volume energy density, and its preparation method. The manganese oxide comprises Mn3O4 prepared by coprecipitation and is a monodisperse spherical powder. Preferably the manganese oxide has a particle size of 5-15 micrometers and a tap density of 2.5 g/cc or more. The spinel type positive electrode active material has a composition represented by Li_(1+alpha)[Mn_(2-alpha)]O4, wherein 0
Abstract translation: 本发明提供一种通过共沉淀法制备的氧化锰及其制备方法，其具有高温结构稳定性和体积能量密度提高的锂二次电池用尖晶石型正极活性物质及其制备方法。 锰氧化物包含通过共沉淀制备的Mn 3 O 4，并且是单分散球形粉末。 优选地，氧化锰的粒度为5-15微米，振实密度为2.5g / cc以上。 尖晶石型正极活性物质具有由Li_（1 +α）[Mn_（2-α）] O4表示的组成，其中0≤α≤0.15。 此外，尖晶石型正极活性物质具有由Li_（1+α）[Mn_（2-α）] O_（4-z）F_z表示的组成，其中0≤α≤0.15; 和0.01 <= z <= 0.15。
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公开(公告)号：KR1020030059842A
公开(公告)日：2003-07-12
申请号：KR1020010086766
申请日：2001-12-28
Applicant: 대정화금주식회사
IPC: G01N31/22
Abstract: PURPOSE: A one liquid type reagent for the titration of Karl-Fisher electricity quantity is provided, to improve the precision and the reproducibility for allowing the content of moisture in a sample to be measured conveniently. CONSTITUTION: The one liquid type reagent comprises about 3 mol of imidazole, about 60 g of iodine, about 0.5 mol of an amine, about 3 mol of dry sulfurous acid gas and a small amount of a stabilizer in 1,000 ml of a solvent. Preferably the solvent is methanol, chloroform or an alcohol-based compound; the amine is imidazole or diethanolamine; and the stabilizer carbon dioxide gas. Also the one liquid type reagent comprises about 150 g of trimethylene-dipiperidine, about 55 g of iodine, about 1.2 mol of an amine, about 3 mol of dry sulfurous acid gas, about 1.5 mol of polypropylene carbonate, about 121 g of choline chloride and a small amount of a stabilizer in 1,000 ml of a solvent. Preferably the solvent is methanol, chloroform or an alcohol-based compound; the amine is imidazole, ethanolamine, morpholine or guanidine; and the stabilizer carbon dioxide gas.
Abstract translation: 目的：提供用于滴定卡尔费希尔电量的一种液体型试剂，以提高样品中水分含量的精度和重现性。 构成：一种液体型试剂包含约3mol咪唑，约60g碘，约0.5mol胺，约3mol干燥亚硫酸气和少量稳定剂在1,000ml溶剂中。 溶剂优选为甲醇，氯仿或醇类化合物; 胺是咪唑或二乙醇胺; 和稳定剂二氧化碳气体。 此外，一种液体型试剂包含约150g的三亚甲基 - 二哌啶，约55g的碘，约1.2mol的胺，约3mol的干燥亚硫酸气体，约1.5mol的聚丙烯碳酸酯，约121g的氯化胆碱 和少量稳定剂在1000ml溶剂中。 溶剂优选为甲醇，氯仿或醇类化合物; 胺是咪唑，乙醇胺，吗啉或胍; 和稳定剂二氧化碳气体。
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19.发明授权공침법을 이용한 망간 복합산화물 및 그 제조방법, 이를이용한 리튬이차전지용 스피넬형 양극활물질과 그 제조방법 有权锰酸盐复合氧化物及其制备方法及其制备方法和用于锂二次电池的螺旋型阴极活性材料及其制备方法
公开(公告)号：KR100765970B1
公开(公告)日：2007-10-10
申请号：KR1020060095696
申请日：2006-09-29
CPC classification number: C01G53/54 , C01P2002/32 , C01P2004/32 , C01P2004/61 , C01P2006/40 , H01M4/505 , H01M4/525 , H01M10/052 , Y02E60/12
Abstract: A manganese complex oxide using a co-precipitation method is provided to ensure a uniform particle size distribution, an excellent life characteristic, and high volumetric energy density. A method for preparing manganese complex oxides using a co-precipitation method includes the steps of: (a) charging distilled water and an aqueous ammonia solution into a co-precipitation reactor, and introducing air into the reactor to stir the materials; (b) charging an aqueous solution of a manganese transition metal compound comprising a manganese salt and a transition metal salt in a molar ratio of 1:1 to 4:1, an aqueous ammonia solution as a complexing agent, and an aqueous alkaline solution as a pH controller into the reactor sequentially, and mixing the admixture to form manganese composite hydroxides; and (c) introducing air into the reactor and oxidizing the manganese composite hydroxides to obtain manganese composite oxides[Mn_(1-x)M_x]_3O_4(wherein, 0.2
Abstract translation: 提供使用共沉淀法的锰复合氧化物以确保均匀的粒度分布，优异的寿命特性和高的体积能量密度。 使用共沉淀法制备锰复合氧化物的方法包括以下步骤：（a）将蒸馏水和氨水溶液装入共沉淀反应器中，并将空气引入反应器中以搅拌物料; （b）将含有锰盐和过渡金属盐的锰过渡金属化合物的水溶液以1:1至4:1的摩尔比，作为络合剂的氨水溶液和碱性水溶液作为 将pH控制器依次进入反应器，并混合该混合物以形成锰复合氢氧化物; 和（c）将空气引入反应器并氧化锰复合氢氧化物以获得锰复合氧化物[Mn_（1-x）M_x] _3O_4（其中，0.2≤x≤0.5，M为过渡金属，x为 摩尔分数）。
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公开(公告)号：KR100701532B1
公开(公告)日：2007-03-29
申请号：KR1020050053304
申请日：2005-06-21
CPC classification number: H01M4/5815 , H01M4/485 , H01M4/505 , H01M4/525 , H01M4/58 , H01M4/582 , H01M4/5825 , H01M4/62 , H01M10/052
Abstract: 본 발명은 리튬이차전지용 양극 활물질에 관한 것으로서 양극 활물질 첨가제로 미세분말 불소화합물을 합성하고 이를 양극 활물질에 첨가하여 불소화합물이 첨가된 리튬이차전지용 양극 활물질을 제조함으로써 전지의 충방전 특성, 수명특성, 고전압특성, 고율특성 등이 향상된 구조적으로 안정한 리튬이차전지용 양극 활물질을 제공할 수 있다.
양극 활물질, 양극 활물질 첨가제, 불소화합물, 고율특성, 고전압특성
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