Abstract: An optical warning system comprises a light head that includes a light source emitting light rays from a light-emitting area. The light rays propagate through an optical diffuser to provide a visual warning signal to an observer remotely located from the optical warning system. A Fresnel optic array positioned between the optical diffuser and the light-emitting area is spaced apart from and spatially aligned with the light-emitting area to receive the light rays emitted from the light-emitting area and form a collimated light beam. The Fresnel optic array is fabricated so that it exhibits increased optical transmission efficiency by reducing light lost to scattering in forming the collimated light beam.

Abstract: An optical warning system comprises a light head that includes a light source emitting light rays from a light-emitting area. The light rays propagate through an optical diffuser to provide a visual warning signal to an observer remotely located from the optical warning system. A Fresnel optic array positioned between the optical diffuser and the light-emitting area is spaced apart from and spatially aligned with the light-emitting area to receive the light rays emitted from the light-emitting area and form a collimated light beam. The Fresnel optic array is fabricated so that it exhibits increased optical transmission efficiency by reducing light lost to scattering in forming the collimated light beam.

Abstract: An apparatus for processing biological materials, the apparatus comprising a plurality of stacked, rotatable platforms, each platform having a plurality of sample receiving areas located thereon. The apparatus has a first dispensing member mounted for dispensing reagent and/or a sample to a sample receiving area on a first stacked platform and a second dispensing member mounted for dispensing reagent and/or a sample to a sample receiving area on a second stacked platform. Each platform is rotatable to move sequential sample receiving areas into orientation with the mounted reagent dispensing member to receive reagent therefrom.

Abstract: A process is disclosed for producing RCFZH by reaction of an iodide compound of the formula R′CFZI with hydrogen at an elevated temperature, wherein R is SF5, CF2SF5 or RfCF2Y, R′ is SF5, CF2SF5 or RfCF2X, Rf is a perfluoroalkylene group containing from 1 to about 12 carbon atoms and optionally containing one or more ether oxygen atoms, Z is selected from F, CF3 and CF2CF3, Y is selected from H, F and SF5, and X is selected from H, F, SF5, and I, provided that when Y is F, X is F, when Y is SF5, X is SF5, and when Y is H, X is H or I.

Abstract: The compounds CF3CHFCHFCF2CF3, CF3CH2CHFCF2CF3, CF3CHFCH2CF2CF3, CF3CHFCHFCF2CF2CF3, CF3CH2CHFCF2CF2CF3, CF3CHFCH2CF2CF2CF3, CF3CF2CH2CHFCF2CF3, CF3CF2CHFCHFCF2CF2CF3, CF3CHFCHFCF2CF2CF2CF3, CF3CHFCH2CF2CF2CF2CF3, CF3CH2CHFCF2CF2CF2CF3, CF3CF2CHFCH2CF2CF2CF3, and CF3CF2CH2CHFCF2CF2CF3; and compositions thereof. Catalytic processes using Group VIII metals are disclosed for reacting selected olefinic starting materials with hydrogen to produce as the major products dihydropolyfluoroalkanes or trihydropolyfluoroalkanes wherein the hydrogens are positioned on two adjacent carbon atoms; as are processes using iodine and/or hydrogen iodide in the reduction of selected olefinic starting materials to dihydropolyfluoroalkanes or trihydropolyfluoroalkanes.

Abstract: A process for the Lewis acid catalyzed addition of trifluoromethanes across the carbon-carbon double bond of fluoroolefins is disclosed. A process for isomerization of monohaloperfluoro alkanes is also disclosed.

Abstract: This invention relates to carbon based initiators for polymerization and telomerization reactions. Polymers produced are useful as water repellants and materials with high temperature resistance. Telomers are useful as intermediates in the production of chemically inert and temperature resistant materials.

Abstract: A process for the faster manufacturing of hydrocarbon, fluorocarbon and chlorocarbon acyl peroxides is disclosed wherein a hydroxide, a peroxide and an acyl halide are reacted under continuous vigorous agitation conditions so as to bring the reaction to substantial completion is less than one minute.

Abstract: The invention concerns processes for the preparation of fluoroolefins, including a process for the deiodofluorination of an iodine containing fluorocarbon comprising contacting said iodine containing fluorocarbon with a fluoroolefin in the presence of an aluminum chlorofluoride catalyst.

Abstract: Disclosed herein is a telomerization process for preparing fluorinated alkyl iodide telomers, comprising telomerizing a starting polyfluoroalkyl iodide with a terminally unsaturated perfluoro olefin or monochlorofluoro olefin.

Abstract: A process for the faster manufacturing of hydrocarbon, fluorocarbon and chlorocarbon acyl peroxides is disclosed wherein a hydroxide, a peroxide and an acyl halide are reacted under continuous vigorous agitation conditions so as to bring the reaction to substantial completion is less than one minute.

Abstract: The compounds CF.sub.3 CHFCHFCF.sub.2 CF.sub.3, CF.sub.3 CH.sub.2 CHFCF.sub.2 CF.sub.3, CF.sub.3 CHFCH.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCHFCF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CH.sub.2 CHFCF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CH.sub.2 CHFCF.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CHFCHFCF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCHFCF.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CH.sub.2 CHFCF.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CHFCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, and CF.sub.3 CF.sub.2 CH.sub.2 CHFCF.sub.2 CF.sub.2 CF.sub.3 ; and compositions thereof.

Abstract: The compounds CF.sub.3 CHFCHFCF.sub.2 CF.sub.3, CF.sub.3 CH.sub.2 CHFCF.sub.2 CF.sub.3, CF.sub.3 CHFCH.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCHFCF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CH.sub.2 CHFCF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CH.sub.2 CHFCF.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CHFCHFCF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCHFCF.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CHFCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CH.sub.2 CHFCF.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, CF.sub.3 CF.sub.2 CHFCH.sub.2 CF.sub.2 CF.sub.2 CF.sub.3, and CF.sub.3 CF.sub.2 CH.sub.2 CHFCF.sub.2 CF.sub.2 CF.sub.3 ; and compositions thereof.

Abstract: A method of producing sterilized or pasteurized mayonnaise or mayonnaise-containing products, comprises directing coagulated egg yellow, such as powdered egg yolk and milk protein, such as powdered skim milk, proteins, starch and stabilizers into a container in which they are mixed together, and adding salt and a small amount of oil and colorants. The mixture is then directed through a dosing pump to a first heater in which the mixture is briefly heated to a temperature in the range of from about 80.degree. C. to 100.degree. C. The heated mixture is subsequently cooled in a first heater to room temperature. The cooled material is then emulsified with oil in an emulsifier. The emulsion is then stirred with vinegar and other additives to form a mayonnaise. The mayonnaise is pasteurized by heating it briefly in a second heater to about 80.degree. to 100.degree. C., or it is sterilized by heating it to a higher temperature of from 110.degree. to 130.degree. C.

Abstract: As disclosed herein, the dry density of a board product is monitored, preferably continuously so. The board is made by a wet forming process, which process includes preparing an aqueous slurry of at least some of the board's components, depositing the slurry upon a moving screen to form a moisture-laden sheet thereon, and removing the moisture to form the ultimate product. The dry density of this product is monitored by first simultaneously and automatically measuring the wet weight, moisture content and thickness of the water-laden sheet on the moving screen and from these measurements automatically calculating the dry density of the board product to be produced from the measured sheet.

Abstract: Described is the reaction of SO.sub.3 with 4- and 5-membered ring fluorovinyl ethers to produce .alpha.,.beta.-cycloalkenones useful, for example, as mild cationic polymerization initiators.

Abstract: Selected novel vic-dialkoxyperfluoroalkyl-vic-diol cyclic sulfates, e.g., 2,3-dimethoxyhexafluorobutane-2,3-diol cyclic sulfate, useful for preparing the corresponding perfluoro-.alpha.-diketones, e.g., hexafluorobiacetyl (known), are synthesized by reacting SO.sub.3 with a vic-dialkoxypolyfluoroalkene, e.g., 2,3-dimethoxyhexafluorobutene-2.

Abstract: A fuel atomizing device for carburetors of internal combustion engines having an annular holder adapted to be fitted inside the carburetor which supports a plurality of axially-parallel nozzles in the path of the air-fuel mixture passing the carburetor. The jet holder supports a plate therebeneath on which a plurality of upwardly opening knife-edged cups are disposed coaxially with each of the nozzles and in spaced relationship thereto so that the air-fuel mixture passing through the nozzles passes into and out of each cup as the mixture passes through to the engine manifold.

Abstract: Trifluoromethyl compounds of the formulas ##EQU1## are useful as oil repellants. Substituted barbituric acid derivatives thereof of the formula ##EQU2## are useful as central nervous system depressants for animals. Trifluoromethylfluorocarbonylketene and trifluoromethylmalonyl fluoride are prepared by reacting perfluoromethylacryloyl fluoride with a carboxylic acid.