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公开(公告)号：KR100391845B1
公开(公告)日：2003-07-16
申请号：KR1020000006402
申请日：2000-02-11
Applicant: 한국과학기술연구원
IPC: C07D317/14
CPC classification number: C07D317/36 , C07D317/38
Abstract: The present invention relates to a method to prepare alkylene carbonate of the formula (1)wherein, R1 and R2 are each independently H; C1-C4 alkyl or phenyl group;which method characterized by reacting alkylene oxide with carbon dioxide in the presence of a catalyst system comprising a) metal halide [MXm] and b) pyridine or pyridine derivative [Py], wherein Py is selected from a group of pyridines; M is a metal atom selected from the group consisting of Zn, Fe, Mn, Pb and In; X is a halogen selected from the group consisting of Cl, Br and I; and m is 2 or 3.
Abstract translation: 本发明涉及制备式（1）的亚烷基碳酸酯的方法，其中R 1和R 2各自独立地为H; C 1 -C 4烷基或苯基;该方法的特征在于使烯化氧与二氧化碳在包含a）金属卤化物[MXm]和b）吡啶或吡啶衍生物[Py]的催化剂体系存在下反应，其中Py选自 一组吡啶; M是选自Zn，Fe，Mn，Pb和In的金属原子; X是选自Cl，Br和I的卤素; m是2或3。
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公开(公告)号：KR100295283B1
公开(公告)日：2001-11-14
申请号：KR1019980057663
申请日：1998-12-23
Applicant: 한국과학기술연구원
IPC: C09K5/04
Abstract: 본 발명은 제 1 성분으로 디플루오로메탄(CH
2 F
2 , HFC-32), 제 2 성분으로 1,1,1,2-테트라플루오로에탄(CF
3 CH
2 F, HFC-134a)를 포함하고, 제 3 성분으로 1,1,1,2,3,3,3-헵타플루오로프로판(CH
3 CHFCF
3 , HFC-227ea), 이소부탄(C
4 H
10 R-600a) 및 1,1,1,2,3,3-헥사플루오로프로판(CHF
2 CHFCF
3 , HFC0236ea)으로 이루어진 군 중에서 선택된 어느 한 성분을 포함하는 HCFC-22 대체용 냉매 혼하물을 제공한다.-
公开(公告)号：KR1020010011158A
公开(公告)日：2001-02-15
申请号：KR1019990030399
申请日：1999-07-26
Applicant: 한국과학기술연구원
IPC: C07D317/00
Abstract: PURPOSE: A method for preparing alkylene carbonate is provided which can synthesize high yield of alkylene carbonate under unstringent condition by using lithium halide as a catalyst. The catalyst has a high catalytic activity, and is easy to separate from a product and to reprocess the catalyst. CONSTITUTION: The alkaline carbonate of formula (1) is prepared by reacting alkylene oxide with carbon dioxide using one or more lithium halides selected from LiX (wherein, X=Cl, Br or I) as the catalyst, wherein R1 and R2 are independently hydrogen or C1-C4 alkyl. The conditions are as follows: 80-170deg.C of a reaction temperature and 10-100 atm of an air pressure.
Abstract translation: 目的：提供一种制备碳酸亚烷基酯的方法，其可以通过使用卤化锂作为催化剂，在非收缩条件下合成高产率的碳酸亚烷基酯。 催化剂具有高催化活性，并且容易与产物分离并重新加工催化剂。 构成：通过使用一种或多种选自LiX（其中，X = Cl，Br或I）的卤化锂作为催化剂使烯化氧与二氧化碳反应制备式（1）的碱式碳酸酯，其中R1和R2独立地为氢 或C 1 -C 4烷基。 条件如下：80-170℃的反应温度和10-100atm的空气压力。
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公开(公告)号：KR100275791B1
公开(公告)日：2000-12-15
申请号：KR1019980023696
申请日：1998-06-23
Applicant: 한국과학기술연구원
Abstract: EDTA·4Na를 결정화하는 공정에 있어서, 솔팅-아웃 용매로서 메탄올을 사용하는 경우에, 초기에 포화 용액을 만들기 위해 필요한 메탄올의 양을 일시에 투입하고, EDTA·4Na 씨결정을 투입하거나 교반 또는 추가 메탄을 투입에 의해 결정핵을 생성시킨 후에, 시간에 따른 메탄올의 투입 속도를 조절하여 생성되는 EDTA·4Na 결정의 석출 속도가 결정의 표면적에 비례하도록 함으로써, EDTA·4Na 결정의 크기 및 크기 분포를 조절하는 방법을 제공한다.
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Patent Agency Ranking
公开(公告)号：KR100256431B1
公开(公告)日：2000-05-15
申请号：KR1019970051415
申请日：1997-10-07
Applicant: 한국과학기술연구원
IPC: C07C211/18
CPC classification number: C07C209/72 , C07C211/36
Abstract: PURPOSE: A cyclic hydrogenation method of aromatic diamine is provided for reducing reaction time and decreasing amount of by-product to raise yield of product by preliminarily surface treating ruthenium catalyst with oxygen or air without using basic materials. CONSTITUTION: The method for producing cyclo-aromatic diamine is to cyclically hydrogenate aromatic diamine at 50-250 deg.C and 300-4000 psig of pressure under 0.1-5 wt.% ruthenium catalyst surface-treated with air or oxygen at 50-200 deg.C. and in the presence of organic solvent. The ruthenium catalyst is prepared by immersing the catalyst into a carrier selected from a group consisting of activated carbon, calcium carbonate, ceria, alumina, zirconia, titania and silica in an amount of 1-10 wt.%. The organic solvent is any one selected from a group consisting of diethylether, isopropylether, methanol, ethanol, isopropylalcohol, butanol, tetrahydrofuran and dioxane.
Abstract translation: 目的：提供芳族二胺的循环氢化方法，通过在不使用碱性物质的情况下，用氧或空气预先表面处理钌催化剂，减少反应时间和减少副产物，提高产物产率。 构成：环芳族二胺的制备方法是在50-250℃和300-4000磅/平方英寸的压力下循环氢化0.1-5重量％的钌催化剂，空气或氧气在50-200℃下表面处理 摄氏度 并在有机溶剂存在下进行。 通过将催化剂浸入1-10重量％的选自活性炭，碳酸钙，二氧化铈，氧化铝，氧化锆，二氧化钛和二氧化硅的载体中来制备钌催化剂。 有机溶剂是选自二乙醚，异丙醚，甲醇，乙醇，异丙醇，丁醇，四氢呋喃和二恶烷中的任一种。
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公开(公告)号：KR1020000021093A
公开(公告)日：2000-04-15
申请号：KR1019980040031
申请日：1998-09-25
Applicant: 한국과학기술연구원
IPC: C07C43/12
Abstract: PURPOSE: A process is provided which decreases corrosion properties of apparatus not using a strong base such as sodium methoxylate and prepares difluoromethyl methyl ether of high recovery rate. CONSTITUTION: Cholrodifluoromethane and methanol are reacted at 30-150°C in the presence of 0.05-2 times of alkali carbonate in a mole ratio of chlorodifluoromethane as a base such as Li2CO3, Na2CO3, K2CO3, Rb2CO3 or Cs2CO3 to give difluoromethyl methyl ether. Thus, 17.2 g of chlorodifluoromethane is reacted in 16.7 g of K2CO3 and 50 cc of methanol at 60°C for 2 hours to give difluoromethyl methyl ether(CF2HOCH3).
Abstract translation: 目的：提供一种降低不使用强碱如甲氧基钠的设备的腐蚀性能并制备高回收率的二氟甲基甲醚的方法。 构成：在二氯甲基甲基醚中，在二氯甲基甲基醚中，在二氯甲烷和二氯甲基甲醚中，在二氯甲烷和二氯甲基甲醚中，在二氯甲烷与二氯甲基甲醚的摩尔比为0.05-2的碱性碳酸盐存在下，将三氟甲烷和甲醇在30-150℃反应。 因此，将17.2g氯二氟甲烷在16.7g的K 2 CO 3和50cc的甲醇中在60℃下反应2小时，得到二氟甲基甲基醚（CF 2 CHOCH 3）。
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公开(公告)号：KR1020000020218A
公开(公告)日：2000-04-15
申请号：KR1019980038729
申请日：1998-09-18
Applicant: 한국과학기술연구원
IPC: C07C273/04
CPC classification number: C07C273/1809 , C07C2601/14 , C07C275/06 , C07C275/18 , C07C275/24
Abstract: PURPOSE: A preparation method of N,N-substituted urea by reacting amine with carbon monoxide and oxygen in the presence of selenium compound catalysts and alkali carbonate co catalysts is provided which can produce in high yield, increases the productivity by reducing the amount of a catalyst used and generate almost no side-products. CONSTITUTION: A method for making N,N-substituted urea of formula (I) which comprises reacting amine with a mixture of gases of CO/O2 in the presence of catalysts of one or more selenium compounds selected from SeO2, (CH3O)Se(O)(OH) and (CH3CH2O)Se(O)(OH) as a major catalyst and alkali carbonates as a co catalyst and a solvent at 80-250°C at 30-200 atm. The formula(I) is RNH-C(=O)-NHR (I) in which R is 1-18C alkyl, cyclohexyl, phenyl or benzyl. The mole number of the selenium compound to the amine and the co catalysts to the major catalysts are 1/12,800-1/200 and 0.1-10 respectively and the mole ratio of CO to O2 is 95: 5-55: 45.
Abstract translation: 目的：提供在硒化合物催化剂和碱金属碳酸盐助催化剂存在下使胺与一氧化碳和氧反应的N，N-取代的脲的制备方法，其可以高产率生产，通过减少 使用的催化剂几乎不产生副产物。 构成：制备式（I）的N，N-取代脲的方法，其包括在一种或多种选自SeO 2，（CH 3））Se的硒化合物的催化剂存在下，使胺与CO / O 2气体的混合物反应 O）（OH）和（CH 3 CH 2 O）Se（O）（OH）作为主要催化剂，碱式碳酸酯作为助催化剂，溶剂在80-250℃，30-200atm。 式（I）是其中R是1-18C烷基，环己基，苯基或苄基的RNH-C（= O）-NHR（I）。 硒化合物与胺和主要催化剂的助催化剂的摩尔数分别为1 / 12,800-1 / 200和0.1-10，CO与O 2的摩尔比为95:5-555:45。
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公开(公告)号：KR1020000020035A
公开(公告)日：2000-04-15
申请号：KR1019980038445
申请日：1998-09-17
Applicant: 한국과학기술연구원
IPC: C07C43/12
Abstract: PURPOSE: 1,1-difluoroethyl methyl ether as a CFC substitutional material is prepared which protects a corrosion of apparatus, and decreases by-product by using alkali carbonate catalyst instead of strong base. CONSTITUTION: 1,1-Difluoroethylene and methanol are reacted at 30- 150°C in the presence of 1- 20 mole % of difluoroethylene alkali carbonate such as Li2CO3, Na2CO3, K2CO3, Rb2CO3 and CS2CO3 to give the title compound. Thus, 12.8 g of 1,1-difluoroethylene and 64 g of methanol are reacted at 80°C for 3 hours in the presence of 2.78 g of potassium carbonate to give the title compound.
Abstract translation: 目的：制备作为CFC取代材料的1,1-二氟乙基甲基醚，其保护装置的腐蚀，并且通过使用碱金属碳酸盐催化剂代替强碱来减少副产物。 构成：1,1-二氟乙烯和甲醇在1-20摩尔％的二氟乙烯碱金属碳酸盐如Li 2 CO 3，Na 2 CO 3，K 2 CO 3，Rb 2 CO 3和CS 2 CO 3的存在下，在30-150℃下反应，得到标题化合物。 因此，在2.78g碳酸钾存在下，将12.8g 1,1-二氟乙烯和64g甲醇在80℃下反应3小时，得到标题化合物。
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公开(公告)号：KR1019990079326A
公开(公告)日：1999-11-05
申请号：KR1019980011861
申请日：1998-04-03
Applicant: 한국과학기술연구원
IPC: C07C271/26 , C07C271/24
Abstract: M
2 SeO
3 , M
2 Se
2 O
5 및 (CH
3 O)SE(O)(OM)[M = Li, Na, K, Rb, 또는 Cs 중에서 선택된 알칼리 금속] 중에서 선택된 1종 이상의 셀레늄 촉매계의 존재하에서 아민을 알코올 및 CO/O
2 혼합가스와 반응시켜 카바메이트를 제조하는 방법.
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