摘要:
Medicinal compositions, and devices, methods and systems which use the compositions, comprising a propellant and at least one medicinally active compound. The propellant comprises at least one fluoroolefin having at least two but less than seven carbon atoms.
摘要:
Provided are novel azeotrope-like compositions of SF6 and N2O, as well as methods of using the same. Also provided are methods of using SF6 compositions, including azeotrope-like compositions, including a method for suppressing an electric arc or corona discharge and a method for flame suppression. Further provided are electrical devices using such SF6 compositions as a dielectric insulating gas and rigid closed-cell foams having such SF6 compositions within the cells, wherein the foam is both thermally and electrically insulative.
摘要:
Disclosed is a method for producing fluorinated organic compounds, including petnafluoropropenes, which preferably comprises converting at least one compound of formula (I): CFnXmCFaXbCH2X (I) to at least one compound of formula (II) CF3CF═CHF (II) where each X is independently Cl, I or Br; n is 2 or 3; m is 0 or 1, a is 1 or 2, b is 0 or 1, m+n=3 and a+b=2.
摘要翻译:公开了一种生产含有氟代有机化合物的方法,其中包括将至少一种式(I)化合物:CF n X m CF a X b CH 2 X(I)转化成至少一种式(II)化合物CF 3 CF = CHF(II)的化合物,其中每个X 独立地是Cl,I或Br; n为2或3; m为0或1,a为1或2,b为0或1,m + n = 3,a + b = 2。
摘要:
A process for the preparation of an allyloxytrifluoropropene derivative of the formula CF3CH═CR1(OCH2CR═CH2) wherein R1 is hydrogen, fluoro, or an allyloxy group represented by the formula —OCH2CR═CH2 wherein R is hydrogen or methyl including contacting (I) a compound represented by the formula CF3CH═CR2R3 wherein R2 is selected from the group consisting of hydrogen, chloro, and fluoro and wherein R3 is chloro or fluoro; and (ii) an allyl alcohol derivative of the formula HOCH2CR═CH2 wherein R is selected from the group consisting of: hydrogen and methyl; wherein the contacting is carried out in the presence of a base and optionally a solvent at a temperature and length of time sufficient to produce the allyloxytrifluoropropene derivative. A process for the preparation of polymers of the allyloxytrifluoropropene derivatives is also provided.
摘要:
Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF3CY═CXNHP, wherein X and Y are independently hydrogen or a halogen selected from fluorine, chlorine, bromine and iodine; and N and P are independently integers equal to 0, 1 or 2, provided that (N+P)=2.
摘要翻译:用于从相应的卤代丙烷制备氟丙烯的脱卤化氢方法,其中氟丙烯具有式CF 3 C 1 -C 6 N N H P H,其中X Y独立地为氢或选自氟,氯,溴和碘的卤素; 并且N和P独立地为等于0,1或2的整数,条件是(N + P)= 2。
摘要:
Various compositions, including particularly aerosol compositions containing fluorinated olefins, including particularly 2,3,3,3-tetraluorpropene (HFO-1234yf), in a variety of applications are disclosed.
摘要:
A process and system for adsorption purification of NF3 wherein a crude product containing NF3 and impurities such as CF4 is brought into contact with a polyacrylonitrile-based carbon molecular sieve so that at least a portion of one or more impurities are adsorbed by the sieve without a significant adsorption of the NF3.
摘要翻译:一种用于NF 3的吸附净化的方法和系统,其中含有NF 3的粗产物和诸如CF 4的杂质与一种 基于聚丙烯腈的碳分子筛,使得至少一部分一种或多种杂质被筛子吸附,而不会显着吸附NF 3 N 3。
摘要:
The invention provides an economic process for the manufacture of the hydrofluorocarbon 1,1,3,3,3-pentafluoropropene (HFC-1225zc). HFC-1225zc can be made from the dehydrochlorination of 1-chloro-1,1,3,3,3-pentafluoropropane (HCFC-235fa). Alternatively, HFC-1225zc can also be made from the dehydrofluorination of 1,1,1,3,3,3-hexafluoropropane (HFC-236fa). HFC-1225zc) is a compound that has the potential to be used as a low Global Warming Potential refrigerant, blowing agent, aerosol propellant, or solvent.
摘要:
An improved thermal energy storage system and a process for thermal energy storage and transfer are disclosed. The cooling medium, a clathrate forming mixture, comprises water, and a hydrofluorocarbon having at least three carbon atoms and a molecular diameter less than about 7 .ANG.. Preferably the hydrofluorocarbon is selected from hydrofluoropropanes and more preferably is selected from the group consisting of CHF.sub.2 CHFCHF.sub.2, CF.sub.2 HCF.sub.2 CH.sub.2 F, CF.sub.3 CHFCH.sub.2 F, CF.sub.3 CH.sub.2 CF.sub.2 H, CF.sub.3 CF.sub.2 CH.sub.3, CF.sub.3 CHFCF.sub.2 H, CF.sub.3 CH.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 H, CH.sub.2 FCF.sub.2 CF.sub.3, CHF.sub.2 CF.sub.2 CH.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 CH.sub.3, CF.sub.3 CF.sub.2 CF.sub.2 CF.sub.2 H, and CF.sub.3 CFHCFHCF.sub.3.
摘要:
Dehydrohalogenation processes for the preparation of fluoropropenes from corresponding halopropanes, in which the fluoropropenes have the formula CF3CY═CXNHP, wherein X and Y are independently hydrogen or a halogen selected from fluorine, chlorine, bromine and iodine; and N and P are independently integers equal to 0, 1 or 2, provided that (N+P)=2.
摘要翻译:用于从相应的卤代丙烷制备氟丙烯的脱卤化氢方法,其中氟丙烯具有式CF 3 C Y = C X N H P,其中X和Y独立地是氢或选自氟,氯,溴和碘的卤素; 并且N和P独立地为等于0,1或2的整数,条件是(N + P)= 2。