摘要:
A process for reducing fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion comprising passing said stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion through a fixed bed of ion exchange resin beads comprising a polymer and functional groups to reduce fluorosurfactant content, the ion exchange resin beads being monodisperse.
摘要:
A tie down assembly for a vehicle is provided. The tie down assembly includes a retention body and an anchor assembly. The anchor assembly is slidably disposed within the retention body for reciprocating movement between a release position and a restraint position. The tie down assembly also includes a stop secured to the anchor assembly. The stop is positioned on the anchor assembly for releasably locking with a portion of the retention body when the anchor assembly is in the restraint position.
摘要:
A process for reducing the fluorosurfactant content of a stabilized fluorosurfactant-containing aqueous fluoropolymer dispersion by passing dispersion through a first fixed bed of anion exchange resin to reduce fluorosurfactant content. The first fixed bed has a working zone which moves though the column as the ion exchange resin is saturated. The process includes monitoring a property of the dispersion as the dispersion exits the fixed bed to determine break though of the working zone indicating saturation of the fixed bed. The property being monitored is selected from the group consisting of pH and conductivity.
摘要:
An airship (100) for conveyance through a fluid medium in a selected direction of travel. The airship includes a hull adapted to contain a lifting medium therein, wherein the hull (108) includes a first section having a width which varies along the selected direction of travel, the width increasing from a bow of the hull to a maximum width and decreasing from the maximum width to a tail section of the first section; and a second section coupled to the first section and having a width which varies along the selected direction of travel, the width increasing from a leading edge of the second section to a maximum width and decreasing from the maximum width to a stern of the hull.
摘要:
A fluorocarboxylic acid preparation process which includes hydrolyzing fluorocarboxylic acid fluoride in the presence of an aqueous sulfuric acid solution to form a reaction product containing a fluorocarboxylic acid and hydrogen fluoride (present as hydrofluoric acid); and removing at least some of the hydrogen fluoride from the reaction product by washing the reaction production with aqueous sulfuric acid solution. The hydrolyzing and washing are carried out at a temperature at which the fluorocarboxylic acid is a liquid.
摘要:
A tie down assembly for a vehicle is provided. The tie down assembly includes a retention body and an anchor assembly. The anchor assembly is slidably disposed within the retention body for reciprocating movement between a release position and a restraint position. The tie down assembly also includes a stop secured to the anchor assembly. The stop is positioned on the anchor assembly for releasably locking with a portion of the retention body when the anchor assembly is in the restraint position.
摘要:
An airship (100) for conveyance through a fluid medium in a selected direction of travel. The airship includes a hull adapted to contain a lifting medium therein, wherein the hull (108) includes a first section having a width which varies along the selected direction of travel, the width increasing from a bow of the hull to a maximum width and decreasing from the maximum width to a tail section of the first section; and a second section coupled to the first section and having a width which varies along the selected direction of travel, the width increasing from a leading edge of the second section to a maximum width and decreasing from the maximum width to a stern of the hull.
摘要:
A fluorocarboxylic acid preparation process continuously carries out acidification reaction treatment and washing treatment, and includes subjecting a fluorocarboxylate-containing aqueous solution to acidification reaction treatment in the presence of sulfuric acid so as to form a sulfate-containing fluorocarboxylic acid phase; and subjecting the fluorocarboxylic acid phase to washing treatment using an aqueous sulfuric acid solution.
摘要:
A tie down assembly for a vehicle is provided. The tie down assembly includes a retention body, an anchoring device moveably disposed within the retention body, and a stop translatable along the anchoring device into releasable locking engagement with a portion of the retention body when the anchoring device is rotated in a first direction.