Process for the manufacture of 1,1,1,3,3-pentafluoropropene, 2-chloro-pentafluoropropene and compositions comprising saturated derivatives thereof
원문보기
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
C07C-017/00
C07C-017/08
B01D-003/34
출원번호
US-0061002
(2002-01-30)
발명자
/ 주소
Manogue, William H.
Rao, V. N. Mallikarjuna
Sievert, Allen Capron
Swearingen, Steven H.
출원인 / 주소
E. I. du Pont de Nemours and Company
인용정보
피인용 횟수 :
4인용 특허 :
23
초록▼
A process is disclosed for producing the pentfluropropenes of the formula CF3CX=CF2,where X is H or Cl. The process involves hydrodehalogenating CF3CCl2CF3with hydrogen at an elevated temperature in the vapor phase over a catalyst comprising an elemental metal, metal oxide, metal halide and/or metal
A process is disclosed for producing the pentfluropropenes of the formula CF3CX=CF2,where X is H or Cl. The process involves hydrodehalogenating CF3CCl2CF3with hydrogen at an elevated temperature in the vapor phase over a catalyst comprising an elemental metal, metal oxide, metal halide and/or metal oxyhalide (the metal being copper, nickel, chromium and the halogen of said halides and said oxyhalides being fluorine and/or chlorine. Processes for producing the hydrofluorocarbons CF3CH2CHF2,CF3CHFCF3and CF3CH2CF3are also disclosed which involve (a) hydrodehalogenating CF3CCl2CF3with the hydrogen as indicated above to produce a product comprising CF3CCl=CF2,CF3CH=CF2,HCl and HF; and (b) either reacting the CF3CCl=CF2and/or CF3CH=CF2produced in (a) in the vapor phase with hydrogen to produce CF3CH2CHF2,reacting CF3CCl=CF2produced in (a) with HF to produce CF3CHFCF3,or reacting the CF3CH=CF2produced in (a) with HF to produce CF3CH2CF3. Azeotrope compositions of CF3CHFCH3with HF, and a process for recovering HF from a product mixture comprising HF and CF3CHFCF3are also disclosed. Also disclosed are compositions and a process for producing compositions comprising (c1) CF3CHFCF3,CF3CH2CF3or CHF2CH2CF3and (c2) at least one saturated halogenated hydrocarbon and/or ether having the formula: CnH2n+2-a-bClaFbOcwherein n is an integer from 1 to 4, a is an integer from 0 to 2n+1, b is an integer from 1 to 2n+2-a, and c is 0 or 1, provided that when c is 1 then n is an integer from 2 to 4, and provided that component (c2) does not include the selected component (c1) compound, wherein the molar ratio of component (c2) to component (c1) is between about 1:99 and a molar ratio of HF to component (c1) in an azeotrope or azeotrope-like composition of component (c1) with HF. The process involves (A) combining (i) the azeotropic composition with (ii) the fluorination precursor to component (c2); and (B) reacting a sufficient amount of the HF from the azeotrope or azeotrope-like composition(i) with precursor component (ii) to provide a composition containing components (c1) and (c2) in the desired ratio. The compositions include at least two (c1) compounds, at least one of which is an ether.
대표청구항▼
A process is disclosed for producing the pentfluropropenes of the formula CF3CX=CF2,where X is H or Cl. The process involves hydrodehalogenating CF3CCl2CF3with hydrogen at an elevated temperature in the vapor phase over a catalyst comprising an elemental metal, metal oxide, metal halide and/or metal
A process is disclosed for producing the pentfluropropenes of the formula CF3CX=CF2,where X is H or Cl. The process involves hydrodehalogenating CF3CCl2CF3with hydrogen at an elevated temperature in the vapor phase over a catalyst comprising an elemental metal, metal oxide, metal halide and/or metal oxyhalide (the metal being copper, nickel, chromium and the halogen of said halides and said oxyhalides being fluorine and/or chlorine. Processes for producing the hydrofluorocarbons CF3CH2CHF2,CF3CHFCF3and CF3CH2CF3are also disclosed which involve (a) hydrodehalogenating CF3CCl2CF3with the hydrogen as indicated above to produce a product comprising CF3CCl=CF2,CF3CH=CF2,HCl and HF; and (b) either reacting the CF3CCl=CF2and/or CF3CH=CF2produced in (a) in the vapor phase with hydrogen to produce CF3CH2CHF2,reacting CF3CCl=CF2produced in (a) with HF to produce CF3CHFCF3,or reacting the CF3CH=CF2produced in (a) with HF to produce CF3CH2CF3. Azeotrope compositions of CF3CHFCH3with HF, and a process for recovering HF from a product mixture comprising HF and CF3CHFCF3are also disclosed. Also disclosed are compositions and a process for producing compositions comprising (c1) CF3CHFCF3,CF3CH2CF3or CHF2CH2CF3and (c2) at least one saturated halogenated hydrocarbon and/or ether having the formula: CnH2n+2-a-bClaFbOcwherein n is an integer from 1 to 4, a is an integer from 0 to 2n+1, b is an integer from 1 to 2n+2-a, and c is 0 or 1, provided that when c is 1 then n is an integer from 2 to 4, and provided that component (c2) does not include the selected component (c1) compound, wherein the molar ratio of component (c2) to component (c1) is between about 1:99 and a molar ratio of HF to component (c1) in an azeotrope or azeotrope-like composition of component (c1) with HF. The process involves (A) combining (i) the azeotropic composition with (ii) the fluorination precursor to component (c2); and (B) reacting a sufficient amount of the HF from the azeotrope or azeotrope-like composition(i) with precursor component (ii) to provide a composition containing components (c1) and (c2) in the desired ratio. The compositions include at least two (c1) compounds, at least one of which is an ether. 9941100, Fung et al., 502/071; US-5446223, 19950800, Smith, Jr., 585/313; US-5476978, 19951200, Smith, Jr. et al., 585/323; US-5672777, 19970900, Kharitonov, 568/800; US-5756861, 19980500, Panov et al., 568/800; US-5770782, 19980600, Knifton et al., 585/467; US-5808167, 19980900, McGhee, 568/716; US-5827491, 19981000, Emerson et al., 423/328.2; US-5866748, 19990200, Wittenbrink et al., 585/734; US-5874646, 19990200, Ebner et al., 568/771; US-5912391, 19990600, Barnhart et al., 568/802; US-5958370, 19990900, Zones et al., 423/706; US-6184431, 20010200, Slaugh et al., 585/867
연구과제 타임라인
LOADING...
LOADING...
LOADING...
LOADING...
LOADING...
이 특허에 인용된 특허 (23)
Klug Diana Lynn (Wilmington DE) Minor Barbara Haviland (Elkton MD) Patron Donna Marie (Newark DE) Chisolm Tuneen E. C. (New Castle DE) Sievert Allen Capron (Elkton MD), Azeotrope (like) composition with fluoromethyl trifluoromethyl ether and 1,1-difluoroethane.
Bartlett Philip L. (Wilmington DE) Bivens Donald B. (Kennett Square PA) Lunger Brooks S. (Coatesville PA) Yokozeki Akimichi (Greenville DE), Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluoroethane.
Bartlett Philip Lee ; Bivens Donald Bernard ; Lunger Brooks Shawn ; Yokozeki Akimichi, Azeotropic and azeotrope-like compositions of 1,1,2,2-tetrafluoroethane.
Mahler Barry A. ; Rao V. N. Mallikarjuna ; Sievert Allen Capron ; Subramanian Munirpallam A. ; Warwas Edwin James, Compositions comprising hydrofluorocarbons and their manufacture.
Webster James L. (Parkersburg WV) McCann Elrey L. (Mendenhall PA) Bruhnke Douglas W. (Landenberg PA) Lerou Jan J. (Chadds Ford PA) Manogue William H. (Newark DE) Manzer Leo E. (Wilmington DE) Swearin, Multistep synthesis of hexafluoropropylene.
Lee Kung H. (Chadds Ford PA) Barsotti Domenic J. (Vineland NJ) Sakata Edward K. (Newark DE), Process for separating and recovering fluorocarbons and hydrogen fluoride from mixtures thereof.
Pham Hang Thanh ; Singh Rajiv Ratna ; Tung Hsueh Sung ; Merkel Daniel Christopher ; Goldschmidt David ; Rygas Tadeusz Piotr,CAX, Process for separating hydrogen fluoride from fluorocarbons.
Balthasart Dominique (Brussels BEX) Decap Philippe (Woluwe-St-Pierre BEX), Process for separation of 1,1-difluoroethane from its mixture with hydrogen fluoride.
Behme Klaus-Jrgen (Eppstein/Taunus DEX) Deger Hans-Matthias (Hofheim am Taunus DEX) Schtz Claudia (Flrsheim am Main DEX), Process for the manufacture of foams with the aid of blowing agents containing fluoroalkanes and fluorinated ethers, and.
Gassen Karl-Rudolf (Odenthal DEX) Bielefeldt Dietmar (Ratingen DEX) Marhold Albrecht (Leverkusen DEX) Schwarz Hans-Helmut (Krefeld DEX), Process for the preparation of 1,1,1,3,3,3-hexafluoropropane and 2-chloro-1,1,1,3,3,3-hexafluoropropane.
Rao V. N. Mallikarjuna (Wilmington DE) Walczak Francis J. (New Castle DE), Production of 1,2-dihydro and 2,2-dihydro hexafluoropropanes and azeotropes thereof with HF.
Wang, Haiyou; Merkel, Daniel C.; Pokrovski, Konstantin A.; Tung, Hsueh Sung; Shankland, Ian, Integrated process to co-produce 1,1,1,3,3-pentafluoropropane, trans-1-chloro-3,3,3-trifluoropropene and trans-1,3,3,3-tetrafluoropropene.
Miller, Ralph Newton; Nappa, Mario Joseph; Rao, Velliyur Nott Mallikarjuna; Sievert, Allen Capron, Processes for production and purification of hydrofluoroolefins.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.