摘要:
Methods and materials are provided for the production and purification of halogenated compounds and intermediates in the production of 1,1,1,3,3-pentafluoropropane. In a preferred embodiment, the process steps include: (1) reacting carbon tetrachloride with vinyl chloride to produce 1,1,1,3,3-pentachloropropane; (2) dehydrochlorinating the 1,1,1,3,3 -pentachloropropane with a Lewis acid catalyst to produce 1,1,3,3-tetrachloropropene; (3) fluorinating the 1,1,3,3-tetrachloropropene to produce 1-chloro-3,3,3-trifluoropropene; (4) fluorinating the 1-chloro-3,3,3-trifluoropropene to produce a product mixture containing 1,1,1,3,3 -pentafluoropropane; and (5) separating 1,1,1,3,3-pentafluoropropane from by-products.
摘要:
The invention provides a video security system for monitoring a plurality of locations simultaneously. In one embodiment, the system includes a text insertion means connected between a video camera and monitor, a control means connected to the text insertion means, and a playback means operatively associated with the text insertion means and control means. Other embodiments include a video camera substitution system having a fixed video camera and a pan-tilt video camera and a video recorder substitution system having a plurality of alternate VRDs. In another embodiment, the system includes a programmable equalizer having a plurality of video input devices, a video output receiver, a switch connected between the input devices and receiver, a variable equalizer connected between the switch and receiver, and a controller storing line loss parameters for each input device, thereby providing equalization among a plurality of video cameras, monitors, and video signal recording devices.
摘要:
Aqueous solutions of polycationic polymers (PAB) containing quaternary ammonium groups in salt form as heteroatomic chain members or ring members of the polymer, wherein a part of the counter-ions to the quaternary cationic groups are anionic groups of anionic optical brighteners, containing at least one anionic group, are valuable multi-functional agents in papermaking.
摘要:
A system and method for determining approval of a multi-currency transaction between a customer and a merchant over a network. The system includes a customer computer which is connected to a communication network, a merchant computer which is connected to the communication network, and a server connected to both the customer computer via the communication network and to the merchant computer via the communication network. The customer computer includes a first set of data which contains an amount the customer is willing to pay the merchant for a product in a first currency. The merchant computer includes a second set of data which contains a product price at which the merchant agrees to sell the product in a second currency. The server receives the first set of data and the second set of data. The server then converts the amount in the first currency into a converted amount in the second currency. The server approves the transaction if the converted amount in the second currency is within a risk range of the product price in the second currency in accordance with current exchange rates. Once the transaction is approved, the approving entity may settle the transaction at its discretion thereby bearing the risk associated with currency exchange. The parties, however, incur no risk. The customer will pay the amount in the first currency and the merchant will receive the price in the second currency. These are values known and agreed to by the parties at the time of the transaction.
摘要:
An apparatus for lubricating an operating component of a system in which the operating component is exposed to a range of conditions, such as a range of temperatures which require adjustment of at least one physical property of the lubricant, is described. In one embodiment, the apparatus is useful for lubricating more than one operating component, each operating under a different operating condition. The apparatus utilizes a first lubricant and a second lubricant which are at least partially miscible, under a condition of at least partial miscibility, usually an elevated temperature. Under the condition of at least partial miscibility, the lubricants combine to provide a third lubricant. The third lubricant is dispensed to the operating component in response to a change in at least one operating condition which requires the properties of the third lubricant for efficient lubrication.
摘要:
A method includes determining a current pose of an augmented reality device in a physical space, and visually presenting, via a display of the augmented reality device, an augmented-reality view of the physical space including a predetermined pose cue indicating a predetermined pose in the physical space and a current pose cue indicating the current pose in the physical space.
摘要:
A system for and a method of creating a coherent video data stream of an object moving between a plurality of areas covered by a plurality of data collecting devices is provided. The method includes selecting a plurality of data collecting devices from the plurality of data collecting devices, synchronizing video data streams from the selected plurality of data collecting devices, substantially simultaneously reviewing the video data streams from the selected plurality of data collecting devices, specifying periods of interest for the video data streams from the selected plurality of data collecting devices, and sequentially combining portions of the video data streams into the coherent video data stream, the portions corresponding to the specified periods of interest.
摘要:
Production processes and systems are provided that include reacting halogenated compounds, dehalogenating compounds, reacting alcohol's, reacting olefins and a saturated compounds, reacting reactants having at least two —CF3 groups with reactants having cyclic groups, RF-compositions such as RF-intermediates, RF-surfactants, RF-monomers, RF-monomer units, RF-metal complexes, RF-phosphate esters, RF-glycols, RF-urethanes, and or RF-foam stabilizers. The RF portion can include at least two groups —CF3 groups, at least three —CF3 groups, and/or at least two —CF3 groups and at least two —CH2 groups. Detergents, emulsifiers, paints, adhesives, inks, wetting agents, foamers, and defoamers including the Rf-surfactant composition are provided. Acrylics, resins, and polymers are provided that include a RF-monomer unit. Compositions are provided that include a substrate having a RF-composition thereover. Aqueous Film Forming Foam (“AFFF”) formulations are provided that can include RF-surfactants and/or RF-foam stabilizers are provided.
摘要:
This disclosure relates to substantially atactic polymers of at least one of propylene, 1-butene or 1-pentene, processes for making such polymers and compositions including the polymers. The polymers may be used as lubricants or may be combined with low viscosity base stocks to form lubricants. The polymers may be made in the presence of a metallocene catalyst with a non-coordinating anion activator and optionally with hydrogen.