99 results about "HFO-1234ze" patented technology

The subject of the present application is a composition comprising a lubricant based on polyol esters (POEs) or PVE and a refrigerant F comprising from 1 to 99% by weight of 2,3,3,3-tetrafluoropropene (HFO-1234A and from 1 to 99% by weight of trans-1,3,3,3-tetrafluoropropene (trans-HFO-1234ze). The subject of the present application is also the use of said composition in refrigeration, air conditioning and heat pumps.

Disclosed is a fully integrated process for making 1,1,1,3,3-pentafluoropropane (HFC-245fa), trans-1-chloro-3,3,3-trifluoropropene (HCFO-1233zd(E)), and trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)). The chemistry involves (a) the reaction of 1,1,1,3,3-pentachloropropane (HCC-240fa), or a derivative thereof selected from 1,1,3,3-tetrachloropropene and 1,3,3,3-tetrachloropropene, with anhydrous HF in excess in the presence of a catalyst in a liquid-phase reactor in such a way as to co-produce HCFO-1233zd, HFO-1234ze, HCFC-244fa (3-chloro-1,1,1,3-tetrafluoropropane), and HFC-245fa in a first reactor; (b) the reaction of HCFO-1233zd and HFO-1234ze with HCl in excess in the presence of a catalyst in a second reactor to convert these two olefins into HCFC-243fa and HCFC-244fa, respectively; (c) the reaction of HCFC-243fa and HCFC-244fa over a dehydrochlorination catalyst or in a caustic solution in a third reactor to form HCFO-1233zd and HFO-1234ze; and (d) the reaction of HCFO-1233zd(Z) and HFO-1234ze(Z) in the presence of a catalyst in a fourth reactor to form trans-1233zd and trans-1234ze, respectively.

The invention discloses a mixed refrigerant with GWP value being lower than 150. The mixed refrigerant comprises the following components in percentage by mass: 52%-90% of 2,3,3,3-tetrafluoropropene (HFO-1234yf), 5%-30% of Trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)) and 5%-18% of F-methyl methyl (CF3OCH3 and HFE-143a). The mixed refrigerant does not damage atmospheric ozone layers, is low in greenhouse effect value, and excellent in environment-friendly performance; thermal performance of the mixed refrigerant is comparable with that of HFC-134a; drop-in substitution can be realized directly without change of any parts of an originally used HFC-134a system, the energy-efficiency ratio can be increased, the charging amount can be reduced, and the mixed refrigerant has the advantages of being low in substitution cost, resource-saving and energy-saving, and can be used as a long-term substitute of HFC-134a in an automobile air conditioner.

The present invention relates to a composition comprising HFO-1234yf, or trans-HFO-1234ze, or a mixture thereof; HFC-32; and HFC-152a, HFO-1243zf, or a mixture thereof, wherein said composition is selected from the group consisting of:(I) a first composition, wherein said HFO-1234yf or trans-HFO-1234ze or a mixture thereof is at least 56 weight percent of said first composition;(II) a second composition, wherein said HFC-32 is at most 29 weight percent of said second composition;(III) a third composition, wherein said HFC-152a is at least 56 weight percent said third composition;(IV) a fourth composition, wherein said HFC-32 is at least 56 weight percent of said fourth composition;(V) a fifth composition comprising trans-HFO-1234ze, HFC-32, and HFC-152a, HFO-1243zf, or a mixture thereof; and(VI) a sixth composition, wherein said HFO-1243zf or mixture thereof with HFC-152a is at most 20 weight percent of said sixth composition.

This invention relates to a process for the suppression of 3,3,3-trifluoropropyne during the manufacture of fluorocarbons, fluoroolefins, hydrochlorofluoroolefins. More particularly, this invention is directed to a process to suppress the formation of 3,3,3-trifluoropropyne during processes for the manufacture of HCFO-1233zd(E), HCFO-1233zd(Z), HFO-1234ze(E), and / or HFO-1234ze(Z).

The present invention relates to a composition comprising HFO-1234yf, or trans-HFO-1234ze, or a mixture thereof; HFC-32; and HFC-152a, HFO-1243zf, or a mixture thereof, wherein said composition is selected from the group consisting of:(I) a first composition, wherein said HFO-1234yf or trans-HFO-1234ze or a mixture thereof is at least 56 weight percent of said first composition;(II) a second composition, wherein said HFC-32 is at most 29 weight percent of said second composition;(III) a third composition, wherein said HFC-152a is at least 56 weight percent said third composition;(IV) a fourth composition, wherein said HFC-32 is at least 56 weight percent of said fourth composition;(V) a fifth composition comprising trans-HFO-1234ze, HFC-32, and HFC-152a, HFO-1243zf, or a mixture thereof; and(VI) a sixth composition, wherein said HFO-1243zf or mixture thereof with HFC-152a is at most 20 weight percent of said sixth composition.