IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0444462
(2007-10-31)
|
등록번호 |
US-8318992
(2012-11-27)
|
국제출원번호 |
PCT/US2007/022995
(2007-10-31)
|
§371/§102 date |
20100107
(20100107)
|
국제공개번호 |
WO2008/054782
(2008-05-08)
|
발명자
/ 주소 |
- Rao, Velliyur Nott Mallikarjuna
- Sievert, Allen Capron
|
출원인 / 주소 |
- E I du Pont de Nemours and Company
|
인용정보 |
피인용 횟수 :
0 인용 특허 :
14 |
초록
▼
A process is disclosed for making CF3CF2CH3, CF3CF═CH2 and/or CF3CCl═CH2. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH═CH2 and halopropenes of the formula CX2═CHCH2X, where
A process is disclosed for making CF3CF2CH3, CF3CF═CH2 and/or CF3CCl═CH2. The process involves reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH═CH2 and halopropenes of the formula CX2═CHCH2X, wherein each X is independently F or Cl, with HF and Cl2 in a reaction zone to produce a product mixture comprising HF, HCl, CF3CF2CH3, CF3CF═CH2, and CF3CCl═CH2; and recovering the CF3CF2CH3, CF3CF═CH2 and/or CF3CCl═CH2 from the product mixture. Also disclosed is a process for making CF3CH2CHF2, CF3CH═CHF, and/or CF3CH═CHCl. This process involves reacting at least one starting material selected from the group consisting of halopropenes of the formula CX3CH═CH2 and halopropenes of the formula CX2═CHCH2X, wherein each X is independently F or Cl, with HF and Cl2 in a reaction zone to produce a product mixture comprising HF, HCl, CF3CH2CHF2, CF3CH═CHF and CF3CH═CHCl; and recovering the CF3CH2CHF2, CF3CH═CHF, and/or CF3CH═CHCl from the product mixture. The molar ratio of HF to the total amount of starting materials fed to the reaction zone for both of these processes is at least stoichiometric, and the molar ratio of Cl2 to total amount of starting material fed to the reaction zone for both of these processes is 2:1 or less.
대표청구항
▼
1. A process for making at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, comprising: reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH═CH2 and
1. A process for making at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, comprising: reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH═CH2 and halopropenes of the formula CX2═CHCH2X, wherein each X is independently selected from the group consisting of F and Cl, with HF and Cl2 in a reaction zone, optionally in the presence of a chlorofluorination catalyst, to produce a product mixture comprising at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, wherein the molar ratio of HF to total amount of starting material fed to the reaction zone is at least stoichiometric and wherein the molar ratio of Cl2 to total amount of starting material fed to the reaction zone is 2:1 or less; andrecovering said at least one product compound from the product mixture. 2. The process of claim 1 wherein CF3CF═CH2 is recovered. 3. The process of claim 2 wherein CF3CF2CH3 from the product mixture is dehydrofluorinated to produce additional CF3CF═CH2. 4. The process of claim 1 wherein CF3CCl═CH2 from the product mixture is fluorinated to produce at least one of CF3CF═CH2 and CF3CF2CH3. 5. The process of claim 1 wherein the product mixture further comprises CF3CH═CHF; and wherein CF3CH═CHF from the product mixture is recovered. 6. The process of claim 1 wherein the product mixture further comprises CF3CH═CHCl; and wherein CF3CH═CHCl from the product mixture is fluorinated to produce at least one of CF3CH═CHF and CF3CH2CHF2. 7. The process of claim 1 wherein the product mixture further comprises CF3CH2CHF2; and wherein CF3CH2CHF2 from the product mixture is recovered. 8. The process of claim 1 wherein the product mixture further comprises CF3CH2CHF2; and wherein CF3CH2CHF2 from the product mixture is dehydrofluorinated to produce CF3CH═CHF. 9. The process of claim 1 wherein the product mixture further comprises CF3CH═CHF; and wherein a mixture of CF3CF2CH3 and CF3CH═CHF is recovered and further reacted under dehydrofluorination conditions in the presence of a dehydrofluorination catalyst to produce a mixture comprising CF3CH═CHF and CF3CF═CH2. 10. The process of claim 1 wherein the product mixture further comprises CF3CH2CHF2 and CF3CH═CHCl; and wherein the CF3CCl═CH2, CF3CH2CHF2 and CF3CH═CHCl from the product mixture are further reacted with HF in the liquid phase under fluorination conditions in the presence of a fluorination catalyst to produce a mixture comprising CF3CH2CHF2 and CF3CF2CH3. 11. The process of claim 1 wherein the starting material is reacted in the vapor phase in the presence of a chlorofluorination catalyst. 12. The process of claim 11 wherein the chlorofluorination catalyst comprises at least one chromium-containing component selected from the group consisting of crystalline alpha-chromium oxide where from about 0.05 atom % to about 6 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by trivalent cobalt atoms, and crystalline alpha-chromium oxide where from about 0.05 atom % to about 6 atom % of the chromium atoms in the alpha-chromium oxide lattice are replaced by trivalent cobalt atoms which has been treated with a fluorinating agent. 13. A process for making at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, comprising: reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH═CH2 and halopropenes of the formula CX2═CHCH2X, wherein each X is independently selected from the group consisting of F and Cl, with HF and Cl2 in a reaction zone, in the presence of a chlorofluorination catalyst, to produce a product mixture comprising HF, HCl, CF3CF2CH3, CF3CF═CH2 and CF3CCl═CH2, wherein the molar ratio of HF to total amount of starting material fed to the reaction zone is at least stoichiometric and wherein the molar ratio of Cl2 to total amount of starting material fed to the reaction zone is 2:1 or less; andrecovering said at least one product compound from the product mixture. 14. The process of claim 13 wherein said at least one starting material is halopropenes of the formula CX3CH═CH2. 15. The process of claim 14 wherein said at least one starting material is CF3CH═CH2. 16. A process for making at least one product compound selected from the group consisting of CF3CF2CH3, CF3CF═CH2, CF3CCl═CH2, CF3CH2CHF2, CF3CH═CHF and CF3CH═CHCl, comprising: reacting at least one starting material selected from the group consisting of halopropanes of the formula CX3CH2CH2X, halopropenes of the formula CX3CH═CH2 and halopropenes of the formula CX2═CHCH2X, wherein each X is independently selected from the group consisting of F and Cl, with HF and Cl2 in a reaction zone, in the presence of a chlorofluorination catalyst, to produce a product mixture comprising CF3CF2CH3, CF3CF═CH2, CF3CCl═CH2, CF3CH2CHF2, CF3CH═CHF and CF3CH═CHCl, wherein the molar ratio of HF to total amount of starting material fed to the reaction zone is at least stoichiometric and wherein the molar ratio of Cl2 to total amount of starting material fed to the reaction zone is 2:1 or less; andrecovering said at least one product compound from the product mixture.
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