-
201.发明授权
公开(公告)号：KR100468526B1
公开(公告)日：2005-01-27
申请号：KR1020010065241
申请日：2001-10-23
Applicant: 한국과학기술연구원
IPC: C07D301/12
Abstract: PURPOSE: A process for preparing hexafluoropropylene oxide from hexafluoropropylene and sodium hypochlorite is provided, thereby rapidly and selectively preparing the hexafluoropropylene oxide in higher yields. CONSTITUTION: A process for preparing hexafluoropropylene oxide from hexafluoropropylene and sodium hypochlorite comprises the steps of: (1) mixing an organic solvent with a sodium hypochlorite(NaOCl) solution; (2) adding a phase shift catalyst and an oxidation catalyst into the mixture; (3) cooling the mixture to -20 to 0 deg. C, followed by vacuum pumping it to remove air, and dissolving hexafluoropropylene(HFP) in it; (4) reacting the mixture at -20 to 0 deg. C; and (5) slowly increasing temperature of the mixture from -20-0 deg. C to 40-60 deg. C, wherein the phase shift catalyst is halogenide of quaternary ammonium salt(R-tetraammonium-X), in which R is C2-7 of alkyl and X is Cl, Br or I; and the oxidation catalyst is transition metal chloride.
Abstract translation: 目的：提供一种由六氟丙烯和次氯酸钠制备六氟环氧丙烷的方法，由此以较高的收率快速和选择性地制备六氟环氧丙烷。 组成：由六氟丙烯和次氯酸钠制备六氟环氧丙烷的方法包括以下步骤：（1）将有机溶剂与次氯酸钠（NaOCl）溶液混合; （2）向混合物中加入相变催化剂和氧化催化剂; （3）将混合物冷却至-20至0℃。 C，然后真空抽去空气，并将六氟丙烯（HFP）溶解在其中; （4）在-20至0℃下使混合物反应。 C; 和（5）将混合物的温度从-20℃缓慢升高。 C到40-60度。 其中所述相变催化剂为季铵盐（R-四铵-X）的卤化物，其中R为烷基的C 2-7且X为Cl，Br或I; 并且氧化催化剂是过渡金属氯化物。
-
公开(公告)号：KR1020040085948A
公开(公告)日：2004-10-08
申请号：KR1020030020810
申请日：2003-04-02
Applicant: 한국과학기술연구원
IPC: C07C29/09
Abstract: PURPOSE: Provided is a process for preparing 2,2,2-trifluoroethanol with high yield in a short time by adding a specific salt. CONSTITUTION: The process for preparing 2,2,2-trifluoroethanol by the hydrolysis of 1-chloro-2,2,2-trifluoroethane in the presence of base comprises adding to the reactants an imidazolium salt represented by the formula 1, an ammonium salt represented by the formula 2 or a phosphate salt represented by the formula 3. In the formulae 1-3, each of R1 to R4 is independently alkyl group of C1-C8, benzyl group or phenyl group and X is selected from F, Cl, Br and I. In the process, the base is selected from hydroxide salt, carbonate salt and acetate salt of lithium, sodium and potassium, and organic acid salt represented by the formula 4, wherein A is O or NH, n is 3, 4 or 5, and M is Li, Na or K.
Abstract translation: 目的：提供通过添加特定盐在短时间内以高产率制备2,2,2-三氟乙醇的方法。 构成：在碱存在下通过水解1-氯-2,2,2-三氟乙烷制备2,2,2-三氟乙醇的方法包括向反应物中加入由式1表示的咪唑鎓盐，铵盐 由式2表示的磷酸盐或由式3表示的磷酸盐。在式1-3中，R 1至R 4各自独立地为C 1 -C 8烷基，苄基或苯基，X选自F，Cl， Br和I.在该方法中，碱选自锂，钠和钾的氢氧化物盐，碳酸盐和乙酸盐，以及由式4表示的有机酸盐，其中A是O或NH，n是3,4 或5，M为Li，Na或K.
-
公开(公告)号：KR1020040057695A
公开(公告)日：2004-07-02
申请号：KR1020020084483
申请日：2002-12-26
Applicant: 한국과학기술연구원
IPC: C07C29/124
Abstract: PURPOSE: Provided is a process for producing 2,2,2-trifluoroethanol at a low reaction temperature for a short time in a high yield by using an imidazolium-based ionic solvent. CONSTITUTION: The 2,2,2-trifluoroethanol is produced by hydrolyzing 1-chloro-2,2,2-trifluoroethane in the presence of the imidazolium-based ionic solvent represented by the formula 1 and a base such a hydroxide salt of lithium, sodium and potassium, a carbonate, an acetate, and an organic acid salt. In the formula, R1 and R2 are independently C1-C8 alkyl or benzyl and X is PF6, BF4, NO3, NO2, CH3CO2, CF3CO2, or CF3SO3.
Abstract translation: 目的：提供使用咪唑鎓系离子溶剂，在低反应温度下短时间高收率地制备2,2,2-三氟乙醇的方法。 构成：2,2,2-三氟乙醇是通过在由式1表示的基于咪唑鎓的离子溶剂存在下水解1-氯-2,2,2-三氟乙烷和碱如锂的氢氧化物盐， 钠和钾，碳酸盐，乙酸盐和有机酸盐。 在该式中，R 1和R 2独立地为C 1 -C 8烷基或苄基，X为PF 6，BF 4，NO 3，NO 2，CH 3 CO 2，CF 3 CO 2或CF 3 SO 3。
-
公开(公告)号：KR1020020067354A
公开(公告)日：2002-08-22
申请号：KR1020010007884
申请日：2001-02-16
Applicant: 한국과학기술연구원
IPC: C09K5/04
CPC classification number: C09K5/045 , C09K2205/12 , C09K2205/43
Abstract: PURPOSE: A mixture coolant composition is provided, which can replace chlorodifluoromethane(CHClF2, referred as HCFC-22), does not destroy an ozone layer and is used in a refrigerator and an air conditioner for a car. CONSTITUTION: The mixture coolant composition comprises 50-60 wt% of difluoromethane(HFC-32); 10-30 wt% of 1,1,1,2-tetrafluoroethane(HFC-134a); 10-20 wt% of 1,1,1,2,3,3,3,-heptafluoropropane(HFC-227ea); and 5-15 wt% of isobutane(R-600a). The mixture coolant composition comprises 50-70 wt% of HFC-32; 10-30 wt% of HFC-134a; 10-20 wt% of HFC-227ea; and 5-15 wt% of 1,1,1,2,3,3-hexafluoropropane(HFC-2363a). The mixture coolant composition comprises 50-70 wt% of HFC-32; 10-30 wt% of HFC-134a; 10-20 wt% of HFC-227ea; and 5-12 wt% of butane(R-600). Also the mixture coolant composition comprises 40-70 wt% of HFC-32; 10-40 wt% of 1,1-difluoroethane(HFC-152a); 10-20 wt% of HFC-227ea; and 5-15 wt% of one selected from the group consisting of R-600a. The mixture coolant composition comprises 50-70 wt% of HFC-32; 10-40 wt% of HFC-152a; 10-20 wt% of HFC-227ea; and 5-15 wt% of HFC-2363a. The mixture coolant composition comprises 40-70 wt% of HFC-32; 10-40 wt% of HFC-152a; 10-20 wt% of HFC-227ea; and 5-12 wt% of R-600.
Abstract translation: 目的：提供混合的冷却剂组合物，其可以替代氯二氟甲烷（CHClF 2，称为HCFC-22），不破坏臭氧层，并用于冰箱和汽车空调。 构成：混合物冷却剂组合物包含50-60重量％的二氟甲烷（HFC-32）; 10-30重量％的1,1,1,2-四氟乙烷（HFC-134a）; 10-20重量％的1,1,1,2,3,3,3， - 七氟丙烷（HFC-227ea）; 和5-15重量％的异丁烷（R-600a）。 混合物冷却剂组合物包含50-70重量％的HFC-32; 10-30重量％的HFC-134a; 10-20重量％的HFC-227ea; 和5-15重量％的1,1,1,2,3,3-六氟丙烷（HFC-2363a）。 混合物冷却剂组合物包含50-70重量％的HFC-32; 10-30重量％的HFC-134a; 10-20重量％的HFC-227ea; 和5-12重量％的丁烷（R-600）。 混合冷却剂组合物还包含40-70重量％的HFC-32; 10-40重量％的1,1-二氟乙烷（HFC-152a）; 10-20重量％的HFC-227ea; 和5-15重量％的选自R-600a的一种。 混合物冷却剂组合物包含50-70重量％的HFC-32; 10-40重量％的HFC-152a; 10-20重量％的HFC-227ea; 和5-15重量％的HFC-2363a。 混合物冷却剂组合物包含40-70重量％的HFC-32; 10-40重量％的HFC-152a; 10-20重量％的HFC-227ea; 和5-12重量％的R-600。
-
公开(公告)号：KR1020010073629A
公开(公告)日：2001-08-01
申请号：KR1020000002395
申请日：2000-01-19
Applicant: 한국과학기술연구원
IPC: C07C41/01
Abstract: PURPOSE: A method is provided which manufactures 2,2,2-trifluoroethyl difluoromethyl ether simply and in a high yield by reacting CF3CH2OH with CHCl3 and HF under the existence of a catalyst. CONSTITUTION: In a method for manufacturing 2,2,2-trifluoroethyl difluoromethyl ether, the method is characterized in that CF3CH2OH is reacted with CHCl3 and HF under the existence of a catalyst, that is, chlorides, fluorides or oxides of a metal selected from the group consisting of B, Sn, Ti, Al, Zn, and Ce, wherein an amount of the catalyst is 0.005 to 1 mole per one mole of trifluoroethanol, wherein an amount of CHCl3 is 1 to 10 moles per one mole of trifluoroethanol, wherein an amount of HF is 5 to 50 moles per one mole of trifluoroethanol, and wherein a temperature of the reaction is 100 to 200 deg.C.
Abstract translation: 目的：提供一种通过在催化剂存在下使CF 3 CH 2 OH与CHCl 3和HF反应而简单地且高产率地制备2,2,2-三氟乙基二氟甲基醚的方法。 构成：在制备2,2,2-三氟乙基二氟甲基醚的方法中，该方法的特征在于CF 3 CH 2 OH在催化剂存在下，即氯化物，氟化物或金属氧化物与CHCl 3和HF反应， 由B，Sn，Ti，Al，Zn和Ce组成的组，其中催化剂的量相对于每摩尔三氟乙醇为0.005〜1摩尔，其中CHCl 3的量为每摩尔三氟乙醇1至10摩尔， 其中HF的量相对于每摩尔三氟乙醇为5〜50摩尔，反应温度为100〜200℃。
-
Patent Agency Ranking
公开(公告)号：KR100287363B1
公开(公告)日：2001-04-16
申请号：KR1019980038445
申请日：1998-09-17
Applicant: 한국과학기술연구원
IPC: C07C43/12
Abstract: M
2 CO
3 (M=알칼리금속)의 일반식을 가지는 탄산알칼리의 촉매하에서, 1,1-디플루오로에틸렌과 메탄올을 반응시켜 1,1-디플루오로에틸메틸에테르를 제조하는 방법에 관한 것이다. 본 발명에 따른 신규의 디플루오로메틸에테르의 제조방법은 탄산알칼리 촉매를 사용함으로써, 강염기를 사용한 종래의 제조방법을 개선하여, 장치의 부식을 막고, 부산물의 생성을 감소시키고, 고수율의 산물을 얻을 수 있는 장점이 있다.-
公开(公告)号：KR1020000004093A
公开(公告)日：2000-01-25
申请号：KR1019980025488
申请日：1998-06-30
Applicant: 한국과학기술연구원
IPC: C25B1/24
Abstract: PURPOSE: A fluorine manufacturing method is provided to prevent the explosive recombination of the fluorine and the hydrogen and to improve the fluorine manufacture efficiency. CONSTITUTION: The fluorine manufacturing method is formed by the steps of: electrolyzing the anhydrous fluoric acid by using the fused alkali metal fluoric acid compound as an electrolytic solution; and leading the electrolytic solution to naturally convert to a specific direction by installing a few louver-typed horizontal gap only on the upper area of the whole area of a cathode(2) and by using a plate on the lower area.
Abstract translation: 目的：提供氟制造方法以防止氟和氢的爆炸性复合并提高氟制造效率。 构成：氟制造方法通过以下步骤形成：使用熔融的碱金属氟酸化合物作为电解液来电解无水氟酸; 并且通过仅在阴极（2）的整个区域的上部区域上安装几个百叶窗型水平间隙并且通过在下部区域上使用板来引导电解液自然地转换成特定方向。
-
公开(公告)号：KR100176325B1
公开(公告)日：1999-05-15
申请号：KR1019950038121
申请日：1995-10-30
Applicant: 한국과학기술연구원
IPC: C07C19/08
Abstract: 본 발명은 트리클로로에틸렌과 불화수소를 원료로 사용하여 2단계 반응으로 1,1,1-트리플루오로-2-클로로에탈을 거쳐 1,1,1,2-테트라플루오로에탄을 제조하는 방법에 관한 것이다.
본 발명의 제조방법에서는 2단계 반응을 서로 다른 반응기에서 수행하며 반응기를 병렬로 배열하여 한개 반응기에서 생성된 부산물(HCl)이 다른 반응기로 투입되지 않는 것을 특징으로 한다. 1,1,1-트리플루오로-2-클로로에탄의 제조반응기에서 생성된 반응 생성 혼합물을 증류탑에서 상부 유출물과 하부 유출물로 분리할 때, 공비혼합물 형성을 이용하여 상부 유출물에서 1,1,1-트리플루오로-2-클로로에탄과 불화수소의 몰비 조성이 1 대 1 이상이 되도록 조절하여 이를 1,1,1,2-테트라플루오로에탄 제조반응에 공급되도록 한다. 본 발명에 의해 두개의 반응기에 공급되는 원료의 조성을 각각, 용이하게 조절하는 방법이 제공되며 반응에 영향을 미칠 수 있는 미반응 물질 및 부산물이 다른 반응기에 투입되지 않도록 할 수 있다.-
209.发明授权
公开(公告)号：KR100148068B1
公开(公告)日：1998-08-17
申请号：KR1019950006718
申请日：1995-03-28
Applicant: 한국과학기술연구원
IPC: B01J23/26
CPC classification number: B01J27/138 , B01J23/26 , C07C17/206 , C07C19/08
Abstract: 수산화크롬을 염화마그네슘 수용액과 혼합한 후 HF 수용액과 반응시켜 얻어지는 생성물을 소성시켜 얻어지는 염화불화탄화수소의 불소화 촉매 및 이 촉매의 존재하에 1,1-디클로로-1-플로오로에탄과 HF를 반응시켜 1,1,1-트리플루오로에탄을 제조하는 방법이 제공된다.
-
公开(公告)号：KR1019970010719A
公开(公告)日：1997-03-27
申请号：KR1019950026126
申请日：1995-08-23
Applicant: 한국과학기술연구원
Abstract: 불화칼슘과, 삼산화크롬, 염화아연 및 염화제2철의 수용액을 혼합한 후 에탄올과 반응시켜 얻어지는 생성물을 소성함으로써 제조된 촉매의 존재하에, 1단계 반응으로서, 1,1,1-트리플루오로-2-클로로에탄(HCFC-133a)과 불화수소를 반응시켜 1,1,1,2-테트라플루오로에탄(HFC-134a), 펜타플루오로에탄(HFC-125) 및 1,1,1-트리플루오로에탄(HFC-143a)을 얻고, 2단계 반응으로서 1단계 반응생성물에 트리클로로에틸렌을 첨가하여 HCFC-133a를 제조한 다음 HFC-134a, HFC-125 및 HFC-143a를 분리하고 HCFC-133a를 1단계 반응으로 재순환시키는 것으로 이루어지는 2단계 기상반응에 의해, HFC-134a, HFC-125 및 HFC-143a를 동시에 제조하는 방법이 제공된다.
-
-
-
-
-
-
-
-
-
Search Results
215
records
(took 0.021 seconds)
