Diffusion and infusion resistant implantable devices and methods for reducing pulsatile pressure are provided. The implantable device includes a balloon implantable within a blood vessel of a patient, e.g., the pulmonary artery. The balloon is injected with a fluid mixture comprising a constituent fluid(s) and a diffusion-resistant gas to provide optimal balloon volume and limit fluid diffusion throughout multiple cardiac cycles. The fluid mixture may be pressurized such that the balloon is transitionable between an expanded state and a collapsed state responsive to pressure fluctuations in the blood vessel.

Provided are a method for treating sulfur hexafluoride and an apparatus for collecting and treating by-products. The method for treating sulfur hexafluoride, and the apparatus for collecting and treating by-products according to the present invention are a significantly effective method and apparatus capable of safely treating sulfur hexafluoride at low cost.

A process for preparing a polyfluorinated compound of formula Ar—R.sub.1 (I), wherein Ar—R.sub.1 (I) is an aromatic ring system

##STR00001##

wherein R.sub.1 is selected from the group consisting of SF.sub.4Cl, SF.sub.3, SF.sub.2CF.sub.3, TeF.sub.5, TeF.sub.4CF.sub.3, SeF.sub.3, IF.sub.2, SeF.sub.2CF.sub.3, and IF.sub.4, X.sub.2 is N or CR.sub.2, X.sub.3 is N or CR.sub.3, X.sub.4 is N or CR.sub.4, X.sub.5 is N or CR.sub.5, X.sub.6 is N or CR.sub.6, and the total number of nitrogen atoms in the aromatic ring system is between 0 and 3, wherein R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, fluoro, chloro, bromo, nitro, trifluoromethyl, 2,2,2-trifluoroethyl, pentafluorosulfanyl, phthalimido, azido, benzyloxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, methoxycarbonyl, ethoxycarbonyl, methylcarbonyl, ethylcarbonyl, acetoxy, t-butyl, phenylcarbonyl, benzylcarbonyl, 3-trifluoromethylphenyl, phenylsulfonyl, methylsulfonyl, chlorophenyl, methyldoxolonyl, methyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, fluoromethyl, fluoroethyl and phenyl.

A process for preparing a polyfluorinated compound of formula Ar—R.sub.1 (I), wherein Ar—R.sub.1 (I) is an aromatic ring system

##STR00001##

wherein R.sub.1 is selected from the group consisting of SF.sub.4Cl, SF.sub.3, SF.sub.2CF.sub.3, TeF.sub.5, TeF.sub.4CF.sub.3, SeF.sub.3, IF.sub.2, SeF.sub.2CF.sub.3, and IF.sub.4, X.sub.2 is N or CR.sub.2, X.sub.3 is N or CR.sub.3, X.sub.4 is N or CR.sub.4, X.sub.5 is N or CR.sub.5, X.sub.6 is N or CR.sub.6, and the total number of nitrogen atoms in the aromatic ring system is between 0 and 3, wherein R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are independently selected from the group consisting of hydrogen, fluoro, chloro, bromo, nitro, trifluoromethyl, 2,2,2-trifluoroethyl, pentafluorosulfanyl, phthalimido, azido, benzyloxy, trifluoromethoxy, 2,2,2-trifluoroethoxy, methoxycarbonyl, ethoxycarbonyl, methylcarbonyl, ethylcarbonyl, acetoxy, t-butyl, phenylcarbonyl, benzylcarbonyl, 3-trifluoromethylphenyl, phenylsulfonyl, methylsulfonyl, chlorophenyl, methyldoxolonyl, methyl, isopropyl, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, fluoromethyl, fluoroethyl and phenyl.

Provided are a sulfide-based lithium-argyrodite ion superconductor containing multiple chalcogen elements and a method for preparing the same. More specifically, provided are a sulfide-based lithium-argyrodite ion superconductor containing multiple chalcogen elements and a method for preparing the same that are capable of significantly improving lithium ion conductivity by substituting a sulfur (S) element in a PS.sub.4.sup.3- tetrahedron with a chalcogen element such as a selenium (Se) element, other than the sulfur (S) element, while maintaining an argyrodite-type crystal structure of a sulfide-based solid electrolyte represented by Li.sub.6PS.sub.5Cl.

Described herein are methods for the bromine-facilitated synthesis of fluoro-sulfur compounds, that include SF.sub.4, SF.sub.5Cl, SF.sub.5Br and SF.sub.6. The methods described herein generally require lower temperature and pressure, produce higher yields, require less time, do not use corrosive or costly reactants and solvents that are commonly used in the synthesis of the fluoro-sulfur compounds, and do not produce deleterious waste products when compared to previously-used methods.

Diffusion and infusion resistant implantable devices and methods for reducing pulsatile pressure are provided. The implantable device includes a balloon implantable within a blood vessel of a patient, e.g., the pulmonary artery. The balloon is injected with a fluid mixture comprising a constituent fluid(s) and a diffusion-resistant gas to provide optimal balloon volume and limit fluid diffusion throughout multiple cardiac cycles. The fluid mixture may be pressurized such that the balloon is transitionable between an expanded state and a collapsed state responsive to pressure fluctuations in the blood vessel.

Diffusion and infusion resistant implantable devices and methods for reducing pulsatile pressure are provided. The implantable device includes a balloon implantable within a blood vessel of a patient, e.g., the pulmonary artery. The balloon is injected with a fluid mixture comprising a constituent fluid(s) and a diffusion-resistant gas to provide optimal balloon volume and limit fluid diffusion throughout multiple cardiac cycles. The fluid mixture may be pressurized such that the balloon is transitionable between an expanded state and a collapsed state responsive to pressure fluctuations in the blood vessel.

Sulfide-type compound particles microparticulated, having an argyrodite-type crystal structure, and including lithium (Li), phosphorus (P), sulfur (S), and a halogen (Ha). As sulfide-type compound particles that can inhibit generation of hydrogen sulfide gas even upon contact with moisture in the atmosphere, provided are sulfide-type compound particles having D50 in a volume-basis particle size distribution of 50 m or less and having an occupancy of sulfur (S) and the halogen (Ha) in the S3 (4a) site, as calculated by a neutron diffraction measurement, of 85% or more.

Sulfide-type compound particles microparticulated, having an argyrodite-type crystal structure, and including lithium (Li), phosphorus (P), sulfur (S), and a halogen (Ha). As sulfide-type compound particles that can inhibit generation of hydrogen sulfide gas even upon contact with moisture in the atmosphere, provided are sulfide-type compound particles having D50 in a volume-basis particle size distribution of 50 m or less and having an occupancy of sulfur (S) and the halogen (Ha) in the S3 (4a) site, as calculated by a neutron diffraction measurement, of 85% or more.