431-63-0Relevant articles and documents
METHOD FOR PURIFYING 1,1,1,2,3-PENTAFLUOROPROPANE AND USE THEREOF FOR OBTAINING HIGH-PURITY 2,3,3,3-TETRAFLUOROPROPENE
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Paragraph 0230, (2020/11/30)
The present invention relates to a process for purifying 1,1,1,2,3-pentafluoropropane, comprising the steps of: i) providing a composition A1 comprising 1,1,1,2,3-pentafluoropropane and 1,1,1,3-tetrafluoropropane; ii) purifying, preferably distilling, said composition A1 under conditions that are sufficient to form at least two streams including a first stream comprising 1,1,1,2,3-pentafluoropropane and a second stream comprising 1,1,1,3-tetrafluoropropane. The present invention also relates to a process for producing 2,3,3,3-tetrafluoropropene and a composition comprising 2,3,3,3-tetrafluoropropene.
Method for the 1,2,3,3,3-pentafluoropropene production
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Paragraph 0086-0092; 0093-0096; 0100; 0101, (2018/09/25)
In the present invention from a number 1, 2, 3, 3, 3 - pentafluoropropene (HFO provided 1225ye) hexafluoropropylene (HFP) method for bath a number [...] substrate. The upper index 2, 3, 3, 3 - 1, 2, 3, 3, 3 - pen hit [phul [phul] base oro pro pen phenolic resin foam which is very low it is a coolant 1234ze (HFO provided 1234yf) HFP H2S-free capacity as an intermediate of a hydrogenating catalyst 1, 1, 2, 3, 3, 3 - hexafluoropropane (HFC-a 236ea) is patterned to expose a hydrogen on generating; reacting a hydrogen fluoride catalyst obtained in said HFC provided 236ea and subjected to a high pressure liquid coolant bath of hydrogen fluoride in an HFO provided 1225ye number number 2000. Reacting a number when a HFC-a 236ea HFP hydrogen and vapor phase high pressure liquid coolant, reaction properly time to prevent the hydrogen consumed only unreacted hydrogen separation and circulating process can be eliminated, such as returning excess of hydrogen by a prefilled billion number. In hydrogenation of the resulting gaseous products another separation step (HFC-a 236ea) followed by a high pressure liquid coolant vapor reaction directly without a perhalogenated alkyl HFO provided 1225ye number 2000. In addition in the present invention HFP hydrogenation reaction temperature and number of stand-alone Dichlorethane efficiently number for the HFC-a 236ea perhalogenated reactions the method generates a control hydrogenation cycled in an HFC-a 236ea surfaces have diameters less than 2000. (by machine translation)
Method for co-preparation of 2,3,3,3-tetrafluoropropene and 1,3,3,3-tetrafluoropropene from hexafluoropropylene
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Paragraph 0152; 0153; 0154; 0155, (2017/01/05)
2, 3, 3, 3-hexafluoro propylene, the 1, 3, 3, 3-and -1234z3 (HFO-1234yf) (HFP) from -1234z3 (HFO-1234ze, E-form) simultaneous manufacturing method is provided. (by machine translation)