21 |
改进的制备四氟苯甲酸的方法 |
CN86106151 |
1986-09-08 |
CN86106151A |
1987-06-03 |
詹姆斯·N·威姆普尔; 蒂莫西·P·帕尔斯; 詹姆斯·范德 |
一种改进的制备2,3,4,5-四氟苯甲酸的方法。其中包括在碱性催化剂存在下,四氟邻苯二甲酸的脱羧作用。也描述了一种改进了的制备四氟邻苯二甲酸的方法,以及结合应用此两种改进了的方法,依次地用一系列方法来制备四氟苯甲酸。 |
22 |
A process for the preparation of difluoro acetic acid and its salts |
JP2011500150 |
2009-03-09 |
JP5329637B2 |
2013-10-30 |
メツツ,フランソワ; サン−ジヤルム,ローラン |
The invention relates to a method for preparing difluoroacetic acid and the salts thereof. The invention also relates to the preparation of difluoroacetyl fluoride used as an intermediate product in the preparation of difluoroacetic acid. The method for preparing difluoroacetic acid according to the invention is characterized in that the same comprises the step of preparing difluoroacetyl fluoride by reacting dichloroacetyl chloride with hydrofluoric acid in a gaseous phase and in the presence of a chromium-based catalyst, followed by the step of hydrolysing the difluoroacetyl fluoride thus obtained. |
23 |
Method of manufacturing a fluoro carboxylic acid |
JP2004539843 |
2003-09-24 |
JP2006500423A |
2006-01-05 |
スティーブン・エイチ・スウェアリンゲン; タ−ウェイ・フ; 滋幸 吉井; 卓也 市田 |
フルオロカルボン酸の製造方法であって、硫酸水溶液の存在下、フルオロカルボン酸フルオライドを加水分解し、フルオロカルボン酸およびフッ化水素(フッ化水素酸として存在)を含んで成る反応生成物を得ること;ならびに、硫酸水溶液によって反応生成物を洗浄することによって、反応生成物からフッ化水素の少なくとも一部分を除去することを含んで成る、フルオロカルボン酸の製造方法である。 加水分解および洗浄は、フルオロカルボン酸が液体である温度において実施される。 |
24 |
Preparation of perfluoroethercarboxylic acid |
JP10500292 |
1992-04-23 |
JPH06128189A |
1994-05-10 |
TOOMASU GURIISU; UERUNERU SHIYUUERUTOFUEEGERU; HARIORUFU KOTSUTOMAN; FURANKU EBUMAIERU |
PURPOSE: To prepare the compound simply with little fluoride and free from a by-product, which is useful as an intermediate for non-flammable perfluoropolyether by hydrolyzing a perfluoroetheracylfluoride by a particular method.
CONSTITUTION: The objective perfluoroethercarboxylic acid of the formula of R
fCOOH is obtained by first diluting a perfluoroetheracylfluoride of the formula R
fCOF [R
f is expressed by the formula] with an amount of 0.5-5 times the weight of R
fCOF of a fluorinated inert solvent (preferably, 1,1,2- trichloro-1,2,2-trifluoroethane), then violently mixing the diluted liquid with 2-15 mole of water per mole of the acylfluoride to hydrolyze the perfluoroetheracylfluoride, further separating the reaction mixture containing the formed perfluoroethercarboxylic acid to an organic phase comprised of the objective compound and solvent and an aqueous phase comprising the diluted HF solution, and finally removing the solvent from the organic phase.
COPYRIGHT: (C)1994,JPO |
25 |
Preparation of perfluoroether carboxylic acid |
JP9810293 |
1993-04-23 |
JPH069487A |
1994-01-18 |
FURANKU EPUMAIYAA; BUERUNAA SHIYUBUERUTOFUEEGAA; HAINTSU SHIYUTORUTSUTSU; BUINSENTSU TSUINMAAMAN |
PURPOSE: To obtain the subject compd. in high purity and high yield by hydrolizing a perfluoroether acyl fluoride by adding no additional solvent, but adding aq. phase, strongly mixing and so on.
CONSTITUTION: For hydrolizing a compd. represented by formula I (where (m) is 1-8; (n) is 0-8) without no additional solvent, aq. phase is added to the compd. of the formula I and mixed strongly for 5-60 min., the mixture is separated into aq. hydrofluoric acid phase and perfluoroether carboxylic acid phase, then the perfluoroether carboxylic acid phase is extraction-treated with 0.1-2.0 times larger quantity of water and separated to obtain the compd. represented by formula II contg. less than 0.25 g/L HF. And the finally separated aq. phase is recycled to the next reaction step for hydrolysis.
COPYRIGHT: (C)1994,JPO |
26 |
JPH0463889B2 - |
JP32073889 |
1989-12-12 |
JPH0463889B2 |
1992-10-13 |
BOBII REI IZERU; UIRIAMU HOORU KAARU; UIRIAMU OOGASUTO MOODO |
|
27 |
Manufacture of by-product-free and isomerically pure naphthalenedicarboxylic acid or naphthalenedicarboxylic acidester |
JP423487 |
1987-01-13 |
JPS62169747A |
1987-07-25 |
BUIRUHERUMU HERUTOMAN; KONRAATO SHIYUTORUTSUENBERUKU; ROORANTO HERUTSUBERUKU; DEIITAA KANPUFU |
|
28 |
JPS4835259B1 - |
JP6349270 |
1970-07-21 |
JPS4835259B1 |
1973-10-26 |
|
|
29 |
할로게노세틸 플루오라이드 및 이의 유도체의 제조방법 |
KR1020127001860 |
2010-07-07 |
KR101392030B1 |
2014-05-07 |
생-잘므로랑; 메츠프랑수아 |
본발명은할로게노세틸플루오라이드및 이의유도체의제조방법에관한것이다. 할로게노세틸플루오라이드를제조하기위한본 발명의방법은상기방법이하기를포함하는것을특징으로한다: 할로게노아세틸할라이드및 과량의할로게노에틸렌화합물을필수적으로포함하는반응혼합물을생성하는, 할로게노에틸렌화합물이할로게노아세틸할라이드로의전환률이 80 % 이하가되는조건하에서의할로게노에틸렌화합물의광산화에의한할로게노아세틸할라이드의제조단계, 할로게노아세틸플루오라이드및 과량의할로게노에틸렌화합물의혼합물을수득하기에적합한상기혼합물과플루오르화수소산과의반응에의한수득된혼합물의부분플루오르화단계, 할로게노아세틸플루오라이드및 과량의할로게노에틸렌화합물의분리단계. 본발명은특별하게는트리플루오로아세트산의제조과정에서중간체의일종으로써사용되는트리클로로아세틸플루오라이드를제조하기위해사용될수 있다. |
30 |
산 플루오라이드 단량체의 제조방법 |
KR1019810002079 |
1981-06-10 |
KR1019840001980B1 |
1984-10-26 |
보비레이에젤; 윌리암파울칼; 윌리암오우구스트모드 |
Title compds. [I; A = 0-2; b = 0-2; n = 0-3; Rf', Rf = F, Cl, perfluoroalkyl, or fluorochloroalkyl; X' = Cl or Br (or a mixt. if n is over 1; Y = Cl, Br, I or F) were prepd. from the reaction of II and III. Thus, 50 ml tetraglyme and 8.35g CsF were heated 1 hr. at 45≦̸C, cooled to 0-10≦̸C, mixed with 7.26 g ClCF2COF, stirred 1 hr. at room temp., mixed with 10 g 2-(chlorldifluoromethyl) trifluorooxirane, and stirred 1 hr to give mainly 3 g ClCF2CF2OCF (CF2Cl)COF, 0.05 g ClCF2CF2OCF(CF2Cl)CF2OCF(CF2Cl)COF, and 0.05 g ClCF2CF2OCF(CF2Cl)CF2OCF(CF2Cl)CF2OCF(CF2Cl)COF. |
31 |
산 플루오라이드 단량체의 제조방법 |
KR1019840004917 |
1984-08-16 |
KR1019840001979B1 |
1984-10-26 |
보비레이에젤; 윌리암오우구스트모드; 윌리암파울칼 |
Acid fluorides [I; a = 0-2; b = 0-2; n = 0-3; m = 1-3; Rf', Rf = F, Cl, perfluoroalkyl, fluorochloroalkyl; X = F, Cl, BrC, or a mixt. if n is over 1; x' = independently Cl or Br; Y = 1, F, Cl or Br were prepd. Thus, 50 ml tetraglyme and 8.35 g CsF were mixed with 7.26 g ClCF2COF, stirred 1 hr., mixed with 10 g 2(chlorodifluoromethyl) trifluorooxirane, and stirred 1 hr. to give mainly 3 g ClCF2CF2OCF(CF2Cl)COF, 0.38 g ClCF2CF2OCF(CF2Cl)CF2OCF (CF2Cl)COF, and 0.05 g ClCF2CF2OCF(CF2Cl)CF2OCF(CF2Cl)CF2OCF(CF2Cl)COF. |
32 |
할로게노세틸 플루오라이드 및 이의 유도체의 제조방법 |
KR1020127001860 |
2010-07-07 |
KR1020120038454A |
2012-04-23 |
생-잘므로랑; 메츠프랑수아 |
본 발명은 할로게노세틸 플루오라이드 및 이의 유도체의 제조방법에 관한 것이다. 할로게노세틸 플루오라이드를 제조하기 위한 본 발명의 방법은 상기 방법이 하기를 포함하는 것을 특징으로 한다: 할로게노아세틸 할라이드 및 과량의 할로게노에틸렌 화합물을 필수적으로 포함하는 반응 혼합물을 생성하는, 할로게노에틸렌 화합물이 할로게노아세틸 할라이드로의 전환률이 80 % 이하가 되는 조건 하에서의 할로게노에틸렌 화합물의 광산화에 의한 할로게노아세틸 할라이드의 제조 단계, 할로게노아세틸 플루오라이드 및 과량의 할로게노에틸렌 화합물의 혼합물을 수득하기에 적합한 상기 혼합물과 플루오르화수소산과의 반응에 의한 수득된 혼합물의 부분 플루오르화 단계, 할로게노아세틸 플루오라이드 및 과량의 할로게노에틸렌 화합물의 분리 단계. 본 발명은 특별하게는 트리플루오로아세트산의 제조과정에서 중간체의 일종으로써 사용되는 트리클로로아세틸 플루오라이드를 제조하기 위해 사용될 수 있다. |
33 |
알코올 분해에 의한 PLA 의 화학적 재활용 |
KR1020117026705 |
2010-03-31 |
KR1020120015440A |
2012-02-21 |
코스자쉬필리쁘; 보게르뜨장-크리스토쁘; 윌로끄조나단 |
본 발명은 하기 단계를 포함하는, PLA 를 필수적으로 함유하는 중합체 배합물의 재활용 방법에 관한 것이다: 분쇄 단계; 압축 단계; PLA 용 용매에의 용해 단계; 비용해된 오염 중합체의 제거 단계; 알코올 분해에 의한 탈중합 반응 단계; 및 정제 단계. |
34 |
개선된 테트라플루오로벤조산의 제조 방법 |
KR1019860007351 |
1986-09-03 |
KR1019950000642B1 |
1995-01-26 |
제임스엔.웰플; 제임스반드부스; 티모시피,풀스 |
내용 없음. |
35 |
Preparation of pentenoic acid |
US354842 |
1994-12-09 |
US5536873A |
1996-07-16 |
Bruce Murphree; Ronnie Ozer |
3-pentenoic acid or the R ester of pentenoic acid is produced by treating pentenoyl chloride in a reactive distillation zone with ROH where R is hydrogen or hydrocarbon of 1 to 6 carbon atoms. Butadiene may be reacted with HCl that is formed by the hydrolysis of pentenoyl chloride, and the butadiene converted to chlorobutene, and the chlorobutene reacted with carbon monoxide to form pentenoyl chloride. |
36 |
Process for the preparation of 2,3,5,6-tetrafluorobenzoic acid, and the
new compounds 2,3,5,6-tetrachloro-4-trifluoromethyl-benzoyl chloride
and 2,3,5,6-tetrafluoro-4-trifluoromethyl-benzoyl fluoride |
US61941 |
1987-06-11 |
US4755621A |
1988-07-05 |
Ernst Kysela; Rudolf Braden |
2,3,5,6-Tetrafluorobenzoic acid is prepared from 4-trifluoromethyl-benzoyl fluoride by chlorination, fluorination, hydrolysis, decarboxylation and saponification. The new compounds 2,3,5,6-tetrachloro-4-trifluoromethyl-benzoyl chloride and 2,3,5,6-tetrafluoro-4-trifluoromethyl-benzoyl fluoride are produced during this as intermediates. |
37 |
Preparation, decarboxylation and polymerization of novel acid fluorides
and resulting monomers |
US510517 |
1983-07-05 |
US4687821A |
1987-08-18 |
Bobby R. Ezzell; William P. Carl; William A. Mod |
Compounds represented by the general formulas ##STR1## are prepared by reacting halofluoropropylene oxides with fluorinated acid fluorides and ketones.These compounds may be decarboxylated to form useful monomers, ##STR2## wherein a=to 3;b=to 3;c=0 or 1;provided a+b+c.noteq.0;n=zero or an integer greater than zero;R.sub.f =F, perfluoroalkyl or fluorochloroalkyl;X=F, Cl, Br or mixtures thereof when n>1;X'=Cl or Br;Y=Cl, Br, F or I;Z=F, OH, NRR' or OA;R and R' are independently selected from the group consisting of hydrogen, an alkyl having one or more than one carbon atom and an aryl;A=alkali metal, quaternary ammonium, R or an aryl.These monomers may then be polymerized into polymers having useful properties. |
38 |
Cryogenically controlled direct fluorination process, apparatus and
products resulting therefrom |
US699291 |
1976-06-23 |
US4281119A |
1981-07-28 |
Richard J. Lagow; James L. Adcock; Norma J. Maraschin |
An apparatus and process useful in direct fluorination of a variety of compositions, as well as the fluorinated compositions themselves, are disclosed.The apparatus comprises a cryogenic zone reactor, such as a packed column reactor, suitably divided into a plurality of independently controllable cryogenic temperature zones. Means are also provided to introduce a reactant to be fluorinated as well as to introduce a mixture of fluorine gas and an inert gas.New fluorinated compounds are also disclosed. These include: perfluoro-2-methoxyethyl ether; perfluoro-1,4-dioxane; perfluoro-2,5-diketohexane; perfluorohexamethylethane; and monohydropentadecafluoroadamantane.Additionally, new syntheses for trifluoroacetic acid, a commercially significant bulk chemical, are disclosed. One synthesis comprises producing perfluoroethyl acetate by direct fluorination using a cryogenic zone reactor, followed by hydrolysis of perfluoroethyl acetate. Two moles of the acid are produced for each mole of ester. A second synthesis comprises fluorinating an acyl chloride followed by hydrolysis of the resulting acyl fluoride. |
39 |
Process of making trifluoroacetic acid |
US32152173 |
1973-01-05 |
US3894082A |
1975-07-08 |
FERNSCHILD GUNTER; PAUCKSCH HEINRICH; MASSONNE JOACHIM |
Substantially anhydrous and chlorine-free trifluoroacetic acid is made in a continuous process by hydrolysis of trifluoroacetyl chloride with water and distillation in a manner wherein the distillation is carried out in a distillation column and attached reflux condenser and gaseous trifluoroacetyl chloride is introduced in the still of the apparatus into a boiling mixture of trifluoroacetic acid, water and hydrogen chloride which mixture has a boiling point between the boiling point of the azeotropic mixture and 72*C/760 Torr. The major portion of the trifluoroacetic acid which condenses at the head of the column is continuously withdrawn from the rising gas mixture at a place ahead of the condenser while the gas mixture which passes through the condenser and includes hydrogen chloride and residual acid is passed into an aqueous solution where it is absorbed while simultaneously an amount of water is added to the still as is necessary for the hydrolysis.
|
40 |
Esters of 3,7,11 -trimethyldodeca-2,4,11-trienoic acid |
US30504272 |
1972-11-09 |
US3882154A |
1975-05-06 |
HENRICK CLIVE A; SIDDALL JOHN B |
Novel aliphatic hydrocarbon polyolefinic esters, synthesis thereof, useful for the control of insects.
|