Abstract: The present invention is an improved plastic container having both improved thermal resistance and improved aroma and flavor barrier properties. The container comprises a polyethylene inner layer having a thickness in the range of 0.5 to 10.0 mil, and a coextruded polypropylene outer layer having a thickness such that the ratio of polypropylene to polylethylene is at least 2:1, and wherein the surface of the polyethylene layer has been treated with a reactive source of fluorine.

Abstract: The present invention is a composite material and a process for making the same. The composite material comprises a thermoset or condensation polymeric material into which has been dispersed high molecular weight polyethylene particles which have been surface treated to have a surface tension of at least 40 dyne/cm at 20.degree. C. The polyethylene particles are dispersed into the thermoset or condensation polymeric material in a concentration range of 2-80 wt % and preferably from 4-66 wt % of the total composite. The resultant composite material exhibits high abrasion resistance and can easily be molded into end products.

Abstract: Gas atomization nozzle for producing metal powder from a molten bath. The nozzle is characterized in that the angle of convergence of the gas to the metal stream can be varied and total volumetric flow of gas through the nozzle can be varied and precisely controlled.The nozzle is characterized by having a generally cylindrical shaped housing containing means to tangentially direct gas introduced from outside the housing to a recess in the inner wall of the cylinder with the tangential gas passages having means to adjust the total volumetric flow of atomizing gas through the nozzle. Disposed in the inside of the cylindrical housing juxtaposed to the recess and in combination therewith is a flow direction insert and a flow direction plate, the flow direction insert being variably positionable in relation to the flow direction plate to control the width of the spray zone.

Abstract: A lightweight and inexpensive inflator for a vehicle passenger side restraint bag. The inflator includes a thin igniter housing member and also includes a thin arcuate barrier member which defines a combustion chamber for holding gas generant material for combustion thereof. The inflator housing has generated gas outlet apertures only on one side and the barrier member faces that side so that generated gas is directed toward the other side of the housing and is then redirected through a filter pack to the apertures. The filter pack includes a plenum providing screen which is blocked to the entrance of redirected gas by the pressing of other layers of the filter pack against the housing wall whereby the redirected gas is directed through a fibrous filter member before being directed into the plenum and out through the housing apertures.

Abstract: A cementitious composition comprising cement, aggregate, a water soluble or water dispersible polymer, and a polyethylene glycol ester of a C.sub.8 -C.sub.22 fatty acid having an HLB value from about 11 to 20 as a water resistance additive.

Abstract: The present invention discloses a surge bottle or pulsation dampening device for cryogenic services which comprises three sections: a liquid sump section comprised of an enclosed area containing a volume of an incompressible fluid; a warm gas volume section comprised of an enclosed area containing a volume of a compressible warm gas; and a laminar flow section which connects and allows for communication between the liquid sump section and the warm gas volume section. The laminar flow section is comprised of a number of small bore, thin walled tubes which contain the incompressible fluid in the end connected to the liquid sump section and the compressible warm gas in the end connected to the warm gas volume section. The bore of the tubes in the laminar flow section are such that any movement of either the compressible warm gas or the incompressible fluid in the tubes would be laminar.

Abstract: Method and apparatus for preventing loss of liquid cryogen due to heat infiltration into the cryogen stored in a dewar. At least one transient heat shield disposed in the vacuum space between the inner and outer vessels of the dewar in heat exchange with normal vapor withdrawal means of the stored cryogen intercepts heat transfer into the stored cryogen.

Abstract: A process for absorbing carbon monoxide and/or olefinically-unsaturated compounds from feedstreams containing such compounds by contacting the feed streams with metal-diketone absorbents of the formula: ##STR1## wherein R.sub.1 is trichloromethyl or R.sub.F ; R.sub.F is C.sub.n F.sub.2n+1 and n is 1-8; R.sub.2 is H or hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond; M.sup.I is Cu.sup.I or Ag.sup.I and R.sub.3 is hydrocarbyl of 2-20 carbon atoms having at least one olefinic unsaturated bond.

Abstract: This invention pertains to an improved process for the alkylation of aromatic amines. The improvement resides in the use with particular aromatic amines and olefins a catalyst which is a highly acidic partially dealuminated zeolite having an increased silica to alumina molar ratio over the original zeolite and an acidity factor of at least 0.3. The partially dealuminated zeolites are preferably exchanged with hydrogen or rare earth metal and are particularly effective for producing an alkylated aromatic amine where the alkyl group is ortho to the amine. The highly acidic partially dealuminated H-mordenite and partially dealuminated HY faujasite are very effective for the alkylation of aniline with propylene.

Abstract: Compositions useful in decomposition molding procedures such as destructive foam casting or ceramic or metallic powder sintering are provided by blends of polymers having greater than 50 weight percent propylene carbonate units and polymers having greater than 50 weight percent methyl methacrylate units. Such blends exhibit an unexpectedly even decomposition profile over the range of temperatures at which their constituent polymers each decompose relatively rapidly. The controlled decomposition rate reduces problems in destructive foam casting and ceramic or metallic powder molding caused by sudden release of gases by the foam pattern or the polymer binder. Preferred blends contain 35 to 65 weight percent poly(methyl methacrylate) and 65 to 35 weight percent poly(propylene carbonate), and very even decomposition behavior is exhibited by blends of 35 to 45 weight percent poly(methyl methacrylate) and 65 to 55 weight percent poly(propylene carbonate).

Abstract: A method for producing the disclosed material comprises introducing into a chemical vapor deposition (CVD) reactor a mixture of process gases comprised essentially of (1) tungsten hexafluoride, (2) a volatile oxygen- and hydrogen-containing organic compound, and (3) hydrogen; controlling the ratio of the tungsten hexafluoride to the oxygen- and hydrogen-containing organic compound within the CVD reactor so that the W/C atomic ratio is within the range of about 0.5 to about 15; controlling the reaction temperature so it is within the range of above about 300.degree. to less than about 650.degree. C.; controlling the total pressure within the range of about 1 Torr. to about 1,000 Torr.; and controlling the ratio of H.sub.2 to WF.sub.6 within the range of about 4 to about 20; to produce W and W.sub.2 C, W and W.sub.3 C, or W and W.sub.2 C and W.sub.3 C.

Abstract: Novel compositions include compounds of the formula: ##STR1## wherein the carbon rings are fully fluorinated and R is selected from the group consisting of fluorine, --CF.sub.3 or --CF(CF.sub.3).sub.2.

Abstract: An operator for remotely opening and closing the valve on a gas cylinder includes a metal frame having an enclosed upper portion, a support plate extending across the upper portion and a mounting wall extending downwardly from a side of the upper portion. On the mounting wall is a C-shaped clamp which is adapted to extend around and be secured to a non-cylindrical portion of the cylinder valve to secure the frame to the cylinder. On the mounting wall below the clamp is an additional clamping means which extends around a cylindrical portion of the cylinder to further secure the frame to the cylinder. A pneumatic activator is mounted on the support plate and has a shaft extending through an opening in the support plate in alignment with the valve stem of the cylinder valve. A coupling member is on the shaft and connects the shaft to the valve stem.

Abstract: "A coated substrate product is described wherein the outer coating on the substrate is comprised of a chemically vapor deposited and heat treated mixture of tungsten and tungsten carbide. The tungsten carbide phase consists of W.sub.2 C or W.sub.3 C or a mixture of W.sub.2 C and W.sub.3 C. During the heat treating, the coated substrate is heated to the deposition temperature or not substantially above the deposition temperature in a non-reactive atmosphere. The heat treating temperature is sufficient to confer a desired improvement in erosive and abrasive wear resistance in the outer coating but does not result in substantial degradation of the mechanical properties of the substrate or in formation of undesirable inter-metallic layers".

Abstract: A process is set forth for recovery of nitrogen from a feed gas stream, containing nitrogen and oxygen, using a cryogenic separation wherein a recycle stream having an oxygen content above that of the feed gas stream is recycled from the cryogenic separation to the feed gas stream without any intervening process step that would decrease the oxygen content of the recycle stream.

Abstract: The present invention relates to an improvement to a cryogenic air separation process having an argon sidearm column. The improvement to the process for maximizing argon recovery comprises effectuating the intimate contact of the liquid phase stream and the vapor phase stream in the low pressure column and the argon sidearm column of an integrated multi-column, e.g. three column, cryogenic distillation system by utilizing a structured or ordered packing.

Abstract: Silicon carbide protective films are produced on the surface of metallic or metal-impregnated substrates. A silicide or silicon diffusion coating is initially formed on the surface of the substrate, and subsequently said surface is treated with a gas stream which is reducing to the coating and substrate and contains a gaseous carbon source at a temperature greater than 500.degree. C.

Abstract: High yields of hydrogen of high purity are obtained from a methane-rich gas stream, such as natural gas, by a particular combination of operations wherein the methane-rich gas undergoes primary steam reforming under less severe operating conditions including lower steam to carbon ratio, supplemented by secondary reforming with oxygen, the obtained hydrogen is separated from accompanying carbon dioxide in the reformer effluent by a special five step pressure swing adsorption sequence having the steps of selective CO.sub.2 adsorption at superatmospheric pressure, rinsing with desorbed carbon dioxide, depressuring and then evacuating without additional rinsing, followed by repressuring the bed with part of the recovered pure hydrogen.

Abstract: The present invention is a process for the control of nitric acid plant stack opacity in the range from 0 to 10 percent during plant startup and shutdown. The process is a series of sequential steps which encompass maximizing pressure, water and air flow to the absorber and adding ammonia upstream of the catalytic combustor. The process is typically accomplished through an automatic control system.

Abstract: The present invention is an improved process for the production of nitrogen and oxygen that uses a double distillation column arrangement. The improvement to the process is the recycling of at least a portion of the oxygen-enriched waste stream to the bottom of the high pressure column. As a result of this improvement, the process is capable of making a nitrogen product with high purity (e.g., 5 ppm oxygen product) at high pressures (e.g., 40 to 150 psia) while simultaneously producing high purity oxygen (e.g., 99.6% oxygen). Nitrogen is produced only from the high pressure column.