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    • 2. 发明公开
    • 비정질의 티탄산바륨(BaTiO₃) 전구체의 제조 방법
    • 制备无定形钛酸钡(BaTiO3)前体的方法
    • KR1020040013648A
    • 2004-02-14
    • KR1020020046658
    • 2002-08-07
    • 대정화금주식회사
    • 이중철이우영
    • C01G23/04
    • C01G23/006C01P2002/02C01P2004/64
    • PURPOSE: Provided is a simplified method for preparing an amorphous barium titanate precursor, from which barium titanate ultrafine particles having uniform Ba-Ti bonds useful as a ferroelectric material are obtained. CONSTITUTION: The method for preparing an amorphous barium titanate(BaTiO3) precursor comprises the steps of: dissolving 1 mol of barium chloride(BaCl2.2H2O) 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.
    • 目的:提供一种制备无定形钛酸钡前体的简化方法,由此得到具有均匀的Ba-Ti键的钛酸钡超微粒子,可用作铁电体材料。 构成:制备无定形钛酸钡(BaTiO 3)前体的方法包括以下步骤:将1mol氯化钡(BaCl 2·2H 2 O)和9-20mol尿素(CO(NH 2)2)溶解到最少量的水中 以形成混合溶液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。
    • 3. 发明公开
    • 칼-피셔 전기량 적정용 일액형 시약
    • 一卡通类型试剂,用于卡尔 - 渔业组合测定
    • KR1020040000800A
    • 2004-01-07
    • KR1020020035751
    • 2002-06-25
    • 대정화금주식회사
    • 이중철이우영
    • G01N31/16
    • PURPOSE: A one-pack type reagent for the Karl-Fisher coulometric titration is provided, to determine the moisture content of a solid sample with excellent precision and reproducibility by the Karl-Fisher coulometric titration. CONSTITUTION: The one-pack type reagent comprises 1.5-3 mol of imidazole; 13.5-24.4 g of iodine; 63.2-69.0 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. Also the one-pack type reagent comprises 1.5-3 mol of imidazole; 13.5-24.0 g of iodine; 63.2-69.0 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 a mixture of chloroform and methanol in the ratio of 65-70 : 30-35 by volume.
    • 目的:提供Karl-Fisher电量滴定法的单包装试剂,通过Karl-Fisher电量滴定法测定固体样品的水分含量,具有出色的精度和重现性。 构成:单组分试剂含有1.5-3mol咪唑; 13.5-24.4克碘; 63.2-69.0g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。 单包装试剂也包含1.5-3mol咪唑; 13.5-24.0克碘; 63.2-69.0g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。 溶剂优选为氯仿和甲醇的混合物,体积比为65-70:30-35。
    • 5. 发明公开
    • 비정질의 스트론튬티타네이트(SrTiO₃) 전구체의제조방법
    • 制备无定形钛酸锶(SrTiO3)前体的方法
    • KR1020040013647A
    • 2004-02-14
    • KR1020020046657
    • 2002-08-07
    • 대정화금주식회사
    • 이중철이우영
    • C01G23/04
    • C01G23/006C01P2004/64C01P2006/40
    • 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.
    • 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。
    • 6. 发明公开
    • 칼-피셔 전기량 적정용 이액형 시약
    • 用于卡尔 - 渔船聚乙烯的双包装试剂和含有负极电解液的两包试剂的负电极解决方案
    • KR1020040000799A
    • 2004-01-07
    • KR1020020035750
    • 2002-06-25
    • 대정화금주식회사
    • 이중철이우영
    • G01N31/16
    • 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.
    • 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。
    • 7. 发明公开
    • 칼-피셔 전기량 적정용 일액형 시약
    • 一种液体类型试剂,用于测定卡尔·菲尔电力数量
    • KR1020030059842A
    • 2003-07-12
    • KR1020010086766
    • 2001-12-28
    • 대정화금주식회사
    • 이중철이우영
    • G01N31/22
    • 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.
    • 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。
    • 9. 发明授权
    • 칼-피셔 전기량 적정용 이액형 시약
    • 用于膜片的卡拉 - 鱼类ER M M M M M M M M M M M M
    • KR100648855B1
    • 2006-11-24
    • KR1020020035750
    • 2002-06-25
    • 대정화금주식회사
    • 이중철이우영
    • G01N31/16
    • 본 발명은 저렴한 가격으로 제조될 수 있는 칼-피셔 전기량 적정에 사용하기 위한 일반용 이액형 수분측정 시약에 관한 것이다. 본 발명의 시약은 양극액의 전체 체적 500 ml 당 100-105 g의 이미다졸, 13-15 g의 요오드, 및 약 1 - 2 mol의 건조 아황산 가스 및 잔여 체적의 용매를 포함하는 양극액과; 음극액의 전체 체적 1000 ml 당 1.5-3 mol의 이미다졸, 13.5-25.0g의 요오드, 63-66.5g의 콜린 클로라이드, 1 -2mol의 건조 아황산 가스 및 잔여 체적의 용매를 포함하는 음극액으로 이루어진다. 또한, 상기 양극액은 양극액은 양극액의 전체 체적 500 ml 당 100-105g의 이미다졸, 13-15 g의 요오드, 및 약 1-2 mol의 건조 아황산 가스, 및 잔여 체적의 용매를 포함하는 것이 바람직하다.
      칼-피셔, 전기량 적정, 이액형 시약, 일반용, 음극액, 양극액,콜린 클로라이드