-
-
-
-
公开(公告)号：KR1020010025849A
公开(公告)日：2001-04-06
申请号：KR1019990036896
申请日：1999-09-01
Applicant: 한국과학기술연구원
CPC classification number: B01D15/163 , G01N30/52
Abstract: PURPOSE: A chromatography separation method using radially directed electric field is provided, which can control residence time of object material in the radial electric field according to the strength of electric field and relative polarity of an object material, a solvent and a packing material and can increase separation efficiency. Therefore the system can achieve high efficiency and high separation performance and also can be applied to chromatography of industrial scale. CONSTITUTION: The method comprises: i) applying voltage of more than 1V to chromatography column to form an electric field radially 1-10 minutes before charging sample; and ii) controlling residence time of the object material by controlling the strength of electric field. The equipment is characterized by a chromatography column (5), wherein an inside electrode (7) and an outside electrode (8) are installed inside and outside of the column respectively to charge electric field for separating an object material from a solvent and a packing material, the column having a channel with an inlet (11) and an outlet (12) for a coolant or heating media to flow.
Abstract translation: 目的：提供使用径向电场的色谱分离方法，其可以根据电场强度和目标材料，溶剂和包装材料的相对极性来控制物体在径向电场中的停留时间，并且可以 提高分离效率。 因此，该系统可以实现高效率和高分离性能，也可应用于工业规模色谱。 构成：该方法包括：i）给样品加样前，将1-10V以上的电压施加到色谱柱上，形成电场径向1-10分钟; 和ii）通过控制电场的强度来控制物体材料的停留时间。 该设备的特征在于色谱柱（5），其中内部电极（7）和外部电极（8）分别安装在该列的内部和外部，以将电场分离用于从溶剂中分离目标材料和包装 材料，该柱具有带有入口（11）的通道和用于冷却剂或加热介质流动的出口（12）。
-
公开(公告)号：KR100281829B1
公开(公告)日：2001-02-15
申请号：KR1019990001307
申请日：1999-01-18
Applicant: 한국과학기술연구원
IPC: C01G23/00
Abstract: 분자내에히드록시기와 1 개이상의에테르기를갖는유기화합물(2-알콕시에탄올)을리간드로갖는티타늄유기금속화합물전구체(precursor)는리간드의입체효과와전자효과및 킬레이트효과에의해수화반응및 축합반응에따른고분자화현상을저지한다. 이러한티타늄전구체를알코올용매에희석한후 바륨염의수용액과혼합하여균일하게분산된바륨-티타늄복합체를형성하고알칼리수용액에서수열(hydrothermal) 반응조건을조절하여입자가고르고구형이며미세한결정형의화학양론적티탄산바륨(barium titanate) 미세분말을제조하는방법을제공한다.
-
Patent Agency Ranking
公开(公告)号：KR1020000073209A
公开(公告)日：2000-12-05
申请号：KR1019990016360
申请日：1999-05-07
Applicant: 한국과학기술연구원
CPC classification number: C05G3/0082 , C05G3/0029
Abstract: PURPOSE: A manufacturing method of prolonged action granular fertilizer is provided to improve heat resistance and durability by using a coating material mainly composed of rosin derivatives containing zinc with having an initial melting point of 75°C or higher. CONSTITUTION: An initial coating material is mixed 70-98 wt.% of rosin derivatives containing zinc with having an initial melting point of 75°C or higher, and 2-30 wt.% of propenic acid polymer, and then is dissolved in an organic solvent to be the concentration of 1-50 wt.%. The initial coating material is basically coated to be 2-30 wt.% compared to granular fertilizer. A mixture contains 30-85 wt.% of rosin derivatives and 15-70 wt.% of thermoplastic resin having the hardening temperature of 90°C or higher. A protective film is manufactured by dissolving in the organic solvent to be 1-50 wt.% concentration. The mixture is protectively coated to be 2-10 wt.% compared to basically coated granular fertilizer and is heat-treated until the hardening of the thermoplastic resin is completed.
Abstract translation: 目的：提供延长作用颗粒肥料的制造方法，通过使用主要由含锌的松香衍生物形成的初始熔点为75℃以上的涂料，提高耐热性和耐久性。 构成：将初始涂料混合70-98重量％的含锌初始熔点为75℃以上的松香衍生物和2-30重量％的丙烯酸聚合物，然后溶于 有机溶剂的浓度为1-50重量％。 与颗粒肥料相比，初始涂料基本上涂覆至2-30重量％。 混合物含有30-85重量％的松香衍生物和15-70重量％的硬化温度为90℃或更高的热塑性树脂。 通过将有机溶剂溶解在1-50重量％的浓度来制造保护膜。 与基本涂覆的颗粒肥料相比，该保护涂层被保护涂层为2-10重量％，并进行热处理，直到热塑性树脂硬化完成。
-
公开(公告)号：KR1020000051068A
公开(公告)日：2000-08-16
申请号：KR1019990001306
申请日：1999-01-18
Applicant: 한국과학기술연구원
IPC: C01G23/00
CPC classification number: C01G23/006 , C01P2004/64
Abstract: PURPOSE: A process for producing barium titanate powder by the hydrothermal reaction of a titanium organic metal compound with a barium salt is provided which gives the superfine powder having a mean particle size of 20 to 30 nm and being excellent in crystallinity. CONSTITUTION: A process comprises preparing a sol precursor using titanium acylate and a barium compound, co-precipitating by injecting the sol precursor to a concentrated alkali solution at a pH higher than 13, crystallizing barium titanate powder from the precipitating solution and purifying through washing processes to obtain superfine particles of crystalline barium titanate useful in the field of electronics. In future, by applying the superfine barium titanate powder to the field of electronic, information and communication, in particular a laminated capacitor, a barium titanate layer it will improve product quality and reduce the production cost.
Abstract translation: 目的：提供通过钛有机金属化合物与钡盐的水热反应制备钛酸钡粉末的方法，其得到平均粒度为20〜30nm的超细粉末，结晶性优异。 方法：一种方法包括使用钛酸酯和钡化合物制备溶胶前体，通过将溶胶前体注入到高于13的pH的浓碱溶液中共沉淀，从沉淀溶液中结晶钛酸钡粉末并通过洗涤方法纯化 以获得可用于电子领域的结晶钛酸钡的超微粒子。 将来，通过将超细钛酸钡粉末应用于电子，信息通信领域，特别是叠层电容器，钛酸钡层将提高产品质量并降低生产成本。
-
公开(公告)号：KR1020000013452A
公开(公告)日：2000-03-06
申请号：KR1019980032319
申请日：1998-08-08
Applicant: 한국과학기술연구원 , 에스케이케미칼 주식회사
IPC: C07C15/24
Abstract: PURPOSE: A dimethylnaphthalene, especially 2,6-dimethylnaphthalene is prepared by transmethylating a mixture of naphthalene and 2-methylnaphthalene in the presence of a lewis acid catalyst. CONSTITUTION: A method for preparing 2,6-dimethylnaphthalene comprises reacting a mixture of naphthalene and 2-methylnaphthalene at the mixing ratio of 0.03 to 20 with tetramethylbenzene in the presence of aluminum chloride as a catalyst in a halogenated hydrocarbon solvent at the room temperature, the halogenated hydrocarbon solvent being selected from the group consisting of dichloromethane, benzyl chloride, and mixtures thereof.
Abstract translation: 目的：在路易斯酸催化剂存在下，通过萘甲酸和2-甲基萘的混合物的甲基化来制备二甲基萘，特别是2,6-二甲基萘。 构成：制备2,6-二甲基萘的方法包括在室温下在氯化铝作为催化剂的存在下，在0.03〜20的混合比例下与四甲基苯反应，在卤代烃溶剂中， 所述卤代烃溶剂选自二氯甲烷，苄基氯及其混合物。
-
公开(公告)号：KR100219840B1
公开(公告)日：1999-09-01
申请号：KR1019970019525
申请日：1997-05-20
Applicant: 한국과학기술연구원
IPC: B01D71/00
Abstract: 본 발명은 유기 알루미늄 화합물 전구체 및 액상으로 존재하여 다루기 쉽고도 증착 과정중에 리간드의 열분해로 인한 탄소오염이 없는, 알루미나 증착을 위한 유기 알루미늄 화합물 전구체로서 (베타-케토에스테르)-(알콕사이드)-알루미늄 화합물을 화학기상증착법을 사용하여 미세 기공구조를 갖는 고순도 알루미나 분리막을 제조하는 방법을 제공한다.
-
公开(公告)号：KR1019980083979A
公开(公告)日：1998-12-05
申请号：KR1019970019525
申请日：1997-05-20
Applicant: 한국과학기술연구원
IPC: B01D71/00
Abstract: 본 발명은 유기 알루미늄 화합물 전구체 및 액상으로 존재하여 다루기 쉽고도 증착 과정중에 리간드의 열분해로 인한 탄소오염이 없는, 알루미나 증착을 위한 유기 알루미늄 화합물 전구체로서 (베타-케토에스테르)-(알콕사이드)-알루미늄 화합물을 화학기상증착법을 사용하여 미세 기공구조를 갖는 고순도 알루미나 분리막을 제조하는 방법을 제공한다.
-
-
-
-
-
-
-
-
-
Search Results
19
records
(took 0.096 seconds)
