IPC분류정보
| 국가/구분 |
United States(US) Patent
등록
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| 국제특허분류(IPC7판) |
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| 출원번호 |
US-0648947
(1991-02-01)
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발명자
/ 주소 |
- Bruhnke Douglas W. (Tokyo PA JPX) Lerou Jan J. (Chadds Ford PA) Rao V. N. Mallikarjuna (Wilmington DE) Seidel William C. (Hockessin DE) Weigert Frank J. (Wilmington DE)
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| 출원인 / 주소 |
- E. I. Du Pont de Nemours and Company (Wilmington DE 02)
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| 인용정보 |
피인용 횟수 :
13 인용 특허 :
0 |
초록
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A vapor phase process is disclosed for producing HCFC-225s, HCFC-235s, HCFC-226s, HFC-236s, and HFC-227s by reacting certain three-carbon reactants containing at least one less fluorine than, and at least as many hydrogen substituents as the desired product (e.g. propane propylene, allene or methyla
A vapor phase process is disclosed for producing HCFC-225s, HCFC-235s, HCFC-226s, HFC-236s, and HFC-227s by reacting certain three-carbon reactants containing at least one less fluorine than, and at least as many hydrogen substituents as the desired product (e.g. propane propylene, allene or methylacetylene) with Cl2 and HF in the presence of a catalyst consisting essentially of chromium oxide or of chromium oxide which is combined with a refractory oxide, fluorinated and/or modified with manganese, iron, cobalt, nickel, copper and/or zinc. The temperature and contact time for the reaction are chosen to provide a product having the desired fluorine and hydrogen content.
대표청구항
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A process for producing a halohydrocarbon product selected from the group of halohydrocarbon products consisting of C3HCl2F5, C3H2ClF5, C3HClF6, C3H2F6, and C3HF7, comprising the steps of: (a) charging a reactor with (i) a catalyst consisting essentially of chromium oxide, (ii) a catalyst consisting
A process for producing a halohydrocarbon product selected from the group of halohydrocarbon products consisting of C3HCl2F5, C3H2ClF5, C3HClF6, C3H2F6, and C3HF7, comprising the steps of: (a) charging a reactor with (i) a catalyst consisting essentially of chromium oxide, (ii) a catalyst consisting essentially of chromium oxide in combination with a refractory oxide, (iii) a catalyst consisting essentially of chromium oxide modified with up to 10 percent by weight based upon the weight of chromium in the catalyst of metal selected from the group consisting of manganese, iron, cobalt, nickel, copper, zinc and mixtures thereof, (iv) a catalyst consisting essentially of chromium oxide in combination with a refractory oxide and modified with up to 10 percent by weight based upon the weight of chromium in the catalyst of metal selected from the group consisting of manganese, iron, cobalt, nickel, copper, zinc and mixtures thereof, or (v) a catalyst consisting essentially of a catalyst of (i), a catalyst of (ii), a catalyst of (iii), or a catalyst of (iv) which has been fluorinated; and (b) reacting at least one three-carbon reactant selected from the group of reactants consisting of propane, propylene, allene, and halogenated acyclic three-carbon hydrocarbons containing at least one less fluorine substituent than said selected product and at least as many hydrogen substituents as said selected product, at least a stoichiometric amount of Cl2 and at least a stoichiometric amount of HF in the vapor phase at an elevated temperature for a selected contact time in the presence of said catalyst; said contact time and temperature being chosen to provide a yield of at least about 20 mole percent of said selected product based upon the moles of said three-carbon reactants reacted.
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