Abstract: A composition containing a non-flammable chlorofluoro-olefin copolymer having a crystallinity index less than about 10% and a weight-average molecular weight greater than about 1,000,000 daltons, wherein the copolymer has at least two comonomer units of the formula: CX2CYA wherein each X is independently selected from H, Cl and F; Y is selected from H, Cl, F, O(CZ2)nCZ3, (CZ2)nCZ3, (OCZ2CZ2)nCZ3 and (O(CZ2)n)nCZ3, wherein each n is independently from about 1 to about 12 and each Z is independently selected from H, Cl and F; and A is selected from H, Cl and F, provided that for at least one comonomer unit, at least one of A, Y, either X or any Z is Cl. Substrates coated with the copolymer compositions are also disclosed.

Abstract: The present invention provides a vapor phase process for the production of difluoromethane, HFC-32. The process of this invention provides for the preparation of HFC-32 by a process that exhibits both good product yield and selectivity.

Abstract: A sintered material is used as a friction material for a pole shoe area of a magnetic track brake, having at least one of a magnetic basic member and a carrier member. The sintered material contains at least one of a proportion of pulverized wear inhibitor and a proportion of powder forming a protective layer.

Abstract: The present spin finish composition comprises at least about 10 percent by weight based on the spin finish composition of components (a) and (b) having the formula R1—(CO)x—O—(CH(R2)—CH2—O)y—(CO)z—R3 wherein each of R1 and R3 is selected from the group consisting of hydrogen or an alkyl group having from one to 22 carbon atoms or an alkylene hydroxy group having from one to 22 carbon atoms, x is zero or one, R2 may vary within component (a) or component (b) and is selected from the group consisting of hydrogen or an alkyl group having from one to four carbon atoms, y is zero, or from one to 25, and z is zero or one, in component (a), x and z are equal to zero and the average molecular weight of component (a) is less than or equal to 1,900 and if R2 varies, component (a) is a random copolymer; and in component (b), at least x or z is equal to one or component (b) is a complex polyoxyethylene glyceride-containing compound having greater than 10 polyoxyethylene u

Abstract: The present invention provides a novel, optionally surfactant-free process for controlling particle number, particle size, and/or particle size distribution. The method of the invention also significantly improves monomer to polymer conversion rates, as well as, increases the level of polymer solids which can be emulsified/dispersed in water without polymer flocculation. Specifically, the improved process provides an aqueous dispersion of up to about 48% polymer solids in water in the absence of surfactant. The resulting fluoropolymers dispersions may be used in resin and coating applications.

Abstract: A power generating system, including a first shaft, a first compressor, a second compressor and a turbine. In a further embodiment, the system also includes a second turbine, a second shaft and a generator. Each of the first compressor, the second compressor and the turbine are connected to the first shaft whereby the first shaft, the first compressor, the second compressor and the turbine all rotate at the same speed. The first compressor and second compressor are of disparate flow types.

Abstract: A composite having a plurality of filaments arranged in a fibrous web that is held together in a unitary structure by a domain matrix. The domain matrix comprises a plurality of matrix islands that individually connect, or bond, at least two filaments, to thereby hold the filaments in a unitary structure. Portions of the filament lengths within the unitary structure are free of matrix islands, causing the domain matrix to be discontinuous. The composite possesses a greater flexibility than coated structures. The composite may be formed into cross-plied structures. A method of making the composite also is disclosed.

Abstract: A turbine engine fuel delivery system (10) and method has, in addition to the conventional fuel bypass (20) for diverting fuel exiting a fuel control (17) away from the engine (49) and back to a fuel pump (15) to maintain a relatively constant pressure differential across the fuel control (17), a separate controllable flow fuel bypass (21) for selectively diverting fuel exiting the fuel control (17) away from the engine (49) and back to the fuel pump (15) to decrease the rate of fuel flow to the engine (49) and correct an overtemperature condition, and an arrangement for enabling the controllable fuel flow bypass (21) during engine (49) start-up and disabling the controllable fuel flow bypass (21) when the engine (49) reaches normal idle speed. Once an engine (49) start or light off is detected, the system (10) automatically prevents turbine outlet temperature exceedences by reducing metered fuel flow to the engine nozzle. The controllable fuel bypass (21) includes a solenoid operable valve (29).

Abstract: An adapter plate for a caliper disc brake assembly is attached to the inboard side of the axle flange of a vehicle axle housing. The adapter plate is generally C-shaped to allow mounting around the central region of the axle housing. The inboard positioning of the adapter plate allows mounting of larger brake calipers within a confined space. The caliper is connected to the axle housing by the adapter plate for the purpose of positioning the caliper relative to the rotor and resisting the torque developed by the action of the brake pads on the rotor. In order to adjust the lateral position of the caliper, the adapter plate, in one embodiment, has a pilot surface which allows the axle flange to be recessed within the adapter plate. In another embodiment, a secondary adapter plate bridges over the opening in the adapter plate to allow mounting of the adapter assembly to the entire bolt circle of the axle flange.

Abstract: An improved foil thrust bearing includes a pair of members arranged for relative rotation with respect to one another. One of the pair of members is adapted to rotatably support the other. A thrust bearing disk is operatively disposed between the pair of relatively rotatable members. The thrust bearing disk has a plurality of diverging surface ramps. The surface ramps can comprise an inner ramp and an outer ramp. The thrust bearing disk can also comprise a plurality of radial slots. A plurality of separately formed, converging surface compliant foils are disposed on the thrust bearing disk and between the ramps. An underspring element is operatively disposed between the thrust bearing disk and one of the rotatable members, with the underspring element having a plurality of alternating upper and lower ridges.

Abstract: The invention relates to a method for recovering products from the defluorination of uranium hexafluoride. Recovered are a commercial grade anhydrous hydrogen fluoride and triuranium oxide through the use of two distinct reactors.

Abstract: The present invention provides load leveling and impact energy absorption webbing comprising warp yarn. If the webbing is used in seat belts, the webbing provides load leveling behavior from about 450 pounds (about 2,000 Newtons) to about 1,800 pounds (about 8,000 Newtons) in vehicle collision. The yarn has a force-displacement profile such that: (a) when the yarn is subjected to an initial barrier stress of from about 0.2 gram/denier to less than or equal to about 1.4 grams/denier, the yarn elongates to less than 3 percent and the initial modulus ranges from about 20 grams/denier to about 150 grams/denier; (b) upon subjecting the yarn to greater than the initial barrier stress and less than or equal to 1.8 grams/denier, the yarn elongates further to at least about 10 percent and the energy absorbed from 0 to the elongation at 1.8 grams/denier is at least about 0.0008 Joule/deniere meter; and (c) upon subjecting the yarn to greater than 1.

Abstract: An aircraft terrain warning generator is provided having a terrain and obstacle warning envelope having a lower boundary formed according to the lesser of the current aircraft flight path angle and the obtainable climb gradient.

Abstract: A method of producing a highly stable packaging substrate in which are provided a first precursor having a first backbone and a first ethynyl group, and a second precursor having a second backbone and a second ethynyl group. Furthermore provided is a crosslinker having a first and a second reactive group. The first precursor, the second precursor, the crosslinker, and a solvent are applied onto a surface to form an electrically insulating layer. The first ethynyl group is reacted with the first reactive group in a first carbon-carbon bond formation reaction and the second ethynyl group is reacted with the second reactive group in a second carbon-carbon bond formation reaction to crosslink the first backbone with the second backbone, thereby forming the packaging substrate. The solvent is removed in a further step.

Abstract: Vinyl ether compounds having the formula:

Abstract: Blast resistant and blast directing container assemblies for receiving explosive articles and preventing or minimizing damage in the event of an explosion. The container assembly includes an opening covered by a band of blast resistant material with at least one slit therethrough in the hoop direction of the band, and optionally, a blast mitigating material located within the container. The container can be collapsible for storage when empty. The container assemblies have utility in aircraft where weight is an important consideration, more particularly as cargo holders or containment devices in the passenger cabin. They are also particularly useful to bomb squad personnel as transport devices for hazardous materials such as gunpowder, high explosives and combinations of high explosives with shrapnel, e.g., grenades and pipe bombs.

Abstract: A carbon-carbon composite material is made by providing an open-celled carbon foam preform, and densifying the preform with carbonaceous material. The open-celled carbon foam preform may be oxygen stabilized prior to carbonization, and the foam preform densified by CVD, HIP, PIC, VPI, pitch and resin injection, or any combination thereof. The carbon carbon composite material can be heat treated to provide thermal management materials, structural materials, or a friction material for use in a brake or clutch mechanism.

Abstract: The present invention provides an efficient process for the recovery of caprolactam from polycaprolactam-containing waste material. The present process for depolymerizing multi-component waste material comprising polycaprolactam and non-polycaprolactam components to form caprolactam comprises the step of: in the absence of added catalyst, contacting the multi-component waste material with superheated steam at a temperature of about 250° C. to about 400° C. and at a pressure within the range of about 1 atm to about 100 atm and substantially less than the saturated vapor pressure of water at the temperature wherein a caprolactam-containing vapor stream is formed.

Abstract: A method of preparing a halogenated primary amine comprising hydrogenating a halogenated oxime in the presence of a catalyst comprising a non-palladium noble metal or a base metal under conditions sufficient to produce a halogenated primary amine.

Abstract: A method is disclosed for making hydroxy-substituted ethynylated biphenyl compounds and for reacting such compounds with a family of noncross-linking thermosetting poly(arylene ethers) to produce novel poly(arylene ether) compositions which, when cured at glass transition temperatures greater than about 350° C. to form thin films, possess properties such as low dielectric constant, low moisture absorption, and high thermal stability. These films are suitable for use as intermetal dielectrics for multilevel interconnection.