Abstract: Intercalated graphite flake is prepared having enhanced exfoliation characteristics in terms of at least one of reduced exfoliation temperature and increased expanded volume (also referred to as “worm volume”). The method entails contacting graphite flake with an organic expansion aid either before immersing in an aqueous intercalant solution or by dissolving the expansion aid in the aqueous intercalant solution prior to subjecting graphite flake to an electrolytic oxidation treatment therein. The graphite flake is subjected to electrolytic oxidation to provide intercalated graphite flake. Then, the intercalated graphite flake is recovered from the bulk of the intercalant solution and is preferably washed and further treated with a suitable surfactant in order to reduce the exposed gallery acids on the subsequently dried flake.

Abstract: The invention presented relates to a process for providing increased electrical and/or thermal conductivity to a material, and to the materials prepared by the process. More particularly, the invention relates to a process involving applying particles of expanded graphite to a substrate or material in order to increase its conductivity. The particles of expanded graphite can be applied to the substrate or material through coating of the substrate with a composition comprising the expanded graphite particles, or by incorporating particles of expanded graphite into the substrate or material itself.

Abstract: Thermal insulating device for high temperature reactors and furnaces utilizing highly active chemical gases in a reducing atmosphere, in the form of a shell of resin bonded flexible graphite sheet.

Abstract: A lay-up mold is disclosed. The mold comprises a multi-sided vertically extending frame formed of sheet steel. A plurality of spaced apart vertically extending ribs also formed of sheet steel are positioned within the frame and rigidly affixed thereto, the ribs having upper edges which conform to the shape of the mold surface. The mold also comprises a plurality of spaced apart vertically extending partition elements formed of sheet steel positioned within the frame which transverse the ribs and rigidly and are affixed to the frame, with the partition elements having upper edges which conform to the shape of the mold surface. A layer of perforated sheet steel is rigidly affixed to the frame and the upper edges of the ribs and partition elements, with a coating of polyurethane overlying and bonded to and interlocked with the perforated sheet steel, the coating forming the mold surface.

Abstract: A process for preparing pins for connecting carbon electrodes is presented. In particular, a process for preparing pins for connecting carbon electrodes including the steps of combining calcined coke, a liquid pitch binder and carbon fibers derived from mesophase pitch to form a pinstock blend; extruding the pinstock blend to form a green pinstock; baking the green pinstock to form a carbonized pinstock; and graphitizing the carbonized pinstock by maintaining the carbonized pinstock at a temperature of at least about 2500° C. for no more than about 18 hours is presented. The pins prepared by the inventive process are also presented.

Abstract: Flexible graphite sheet is made by compressing a mixture of relatively large particles of intercalated, exfoliated, expanded natural graphite with smaller particles of intercalated, exfoliated expanded, expanded particles of natural graphite. The resulting sheet of flexible graphite exhibits increased electrical conductivity through the thickness (“c” direction) of the sheet and improved sealability perpendicular to the “c” direction.

Abstract: This invention relates to a resin having the general formula--A--B--C--wherein a plurality of each of components A, B and C occur in ordered or random sequence in the resin and wherein A is present in said resin at about 5% to about 20% by weight and comprises groups of the formula ##STR1## B is present in said resin at about 4% to about 30% by weight and comprises groups of the formula ##STR2## and C is present in said resin at about 50% to about 91% by weight and comprises acetal groups consisting of groups of the formulae ##STR3## where R is lower alkyl or hydrogen, and wherein said group I is present in component C from about 75% to about 85%; group II is present in component C from about 3% to about 5%; and group III is present in component C from about 10% to about 22%.

Abstract: A process for preparing an iodine stainable polyester polarizer film which comprises:(a) extruding a moving molten web of polyester film; and(b) quenching said moving web to solidify it in a substantially amorphous form; and(c) applying an anchor coating to at least a portion of the surface of said film wherein said anchor coating improves adhesion of polyvinyl alcohol to polyester film; and(d) applying a coating of a dispersed aqueous composition of polyvinyl alcohol to at least a portion of the surface of said film; and(e) stretching said moving web in a direction transverse to the direction of motion while heating said web at a temperature of from about its glass transition temperature to about 160.degree. C.; and(f) crystallizing said moving web by heating it to a temperature in the range of 130.degree. C. to 240.degree. C. without stretching said web; and(g) cooling said web to substantially ambient atmospheric temperature.

Abstract: A lens for utilization in the radiation energy exit port of a radiation energy integrating sphere is provided, and functions to prevent instrumental specular radiation energy reflections from striking the interior wall surfaces of the sphere and being collected thereby. The instrumental specular radiation energy reflections include those from the lens, per se, and those from instrumentation disposed without the integrating sphere.

Abstract: A specific binding enzyme-resistant ligand assay test material, which material comprises (a) a solid phase incorporated with one partner of a specific binding pair comprising said ligand or a binding analog thereof and a specific binding protein therefor; (b) a conjugate comprising the other partner of said specific binding pair incorporated with a substance which protects the specific binding protein of said pair from enzyme inactivation when bound with its partner; and (c) an active protein-inactivating enzyme. Also a specific binding method of assaying for an enzyme-resistant ligand in a sample, which method uses the above test material and which results in a reduction in interference caused by non-specific protein.

Abstract: A discrete-type analytical system comprising a cuvette tray which is adapted for bidirectional rotation, so as to ensure accurate repositioning of individual reaction cuvettes at one or more treatment stations.

Abstract: New and improved, mechanically self-resonant apparatus and method for the non-invasive mixing of materials are disclosed, and comprise vibrator means including container means for the materials to be mixed, and drive means to drivingly vibrate the vibrator means. Sensor means are operatively associated with the vibrator means and the drive means, and are operable to sense the frequency of vibration of the vibrator means and maintain that frequency at or near the resonant frequency of the vibrator means. This promotes thorough mixing of the materials, and minimizes the energy input required for vibrational mixing of the materials. Control means are provided to control the amplitude of vibration of the vibrator means at or near the resonant frequency to avoid damage to the materials attendant mixing. The container means may take the form of a conduit through which the materials to be mixed are flowing attendant vibrational mixing.

Abstract: A method for the determination of anti-Epstein-Barr Virus antibodies in a test sample comprises contacting a substrate for the anti-Epstein-Barr Virus antibodies with sample; treating the contacted substrate with labeled antihuman Ig antibody selected from (a) a mixture comprising enzyme labeled antihuman Ig antibody and fluorescent labeled antihuman Ig antibody, (b) antihuman Ig antibodies labeled with an enzyme and a fluorescent label, (c) fluorescent labeled antihuman Ig antibody to which enzyme labeled antibody against the animal species from which the antibody used in the fluorescent labeled antibody was derived is subsequently added, and (d) enzyme labeled antihuman Ig antibody to which fluorescent labeled antibody against the animal species from which the antibody used in the enzyme labeled antibody was derived is subsequently added; determining the enzyme activity of the treated substrate; and determining the immunofluorescent patterns in substrates exhibiting enzyme activity.

Abstract: New and improved, liquid level adjusting and filtering device is provided, and is operable upon insertion into a container to automatically adjust the level of a liquid as contained in the container to a predetermined, precisely repeatable location, and to filter the thusly level-adjusted liquid. The device is particularly adapted for use in conjunction with test tube-like devices, in the nature of those marketed under the Trademark "Vacutainer" by the Becton-Dickinson Company of East Rutherford, NJ, containing whole blood samples which have been separated as by centrifugation into respective blood cell, buffy and blood serum layers; and is operable in that context to present blood serum samples to automated sample analysis systems at the same predetermined and precisely repeatable location relative to the aspirating probe means of such systems.

Abstract: A light sensitive composition for the preparation of a positive acting photoresist which is a mixture of an alkali soluble resin and a compound of the formula ##STR1## wherein X is a naphthoquinone-(1,2)-diazide-(2)-sulfonyl residue.

Abstract: A primer coated, oriented polyester film material is provided wherein the primer is applied in an aqueous medium comprising a water dispersible copolyester consisting essentially of the condensation product of components A, B, C, and D or their polyester forming equivalents as follows:(A) about 60 to 75 mole percent of terephthalic acid;(B) about 15 to 25 mole percent of at least one dicarboxylic acid of the formula HOOC(CH.sub.2).sub.n COOH, wherein n ranges from about 1-11;(C) greater than from about 6 up to about 15 mole percent of at least one sulfomonomer containing an alkali metal sulfonate group attached to a dicarboxylic aromatic nucleus, and(D) stoichiometric quantities, i.e., about 100 mole percent of at least one aliphatic or cycloaliphatic alkylene glycol copolymerizable therewith having about from 2 to 11 carbon atoms.The copolyester priming layer may be applied to the polyester film at any suitable stage during manufacture of the film, i.e., before or during the stretching operations.

Abstract: Compositions for pyridoxal-5'-phosphate (PLP) activated transaminase determinations are provided, in which interference due to PLP is avoided. Amino-functionalized polymers bind PLP which is not associated with the apotransaminase in the sample to be tested, thereby avoiding signal interference, e.g. background absorbance, due to PLP.

Abstract: The present invention relates to a credit card or identification card fabricated from amorphous polyester sheet material wherein at least the area of said card containing embossed numerical or letter characters and the characters themselves are composed of substantially crystalline polyester. Such characters can not readily be altered by either heat treatment or by shaving them off.

Abstract: A prime coated oriented polyester film is disclosed wherein the primer coating is applied as an aqueous medium consisting essentially of a material selected from the group consisting of a water soluble alkali metal salt of an unsaturated fatty acid having from about 10 to 18 carbon atoms and mixtures of such salts or a water soluble alkali metal salt of an alkyl sulfate having from about 8 to 18 carbon atoms and mixtures of such salts. Preferred species include sodium oleate and sodium lauryl sulfate. The alkali metal salt priming layer may be applied to the polyester film at any suitable stage during manufacture of the film, i.e., before or during the stretching operations, or after stretching and prior to winding of the film. The resultant primed polyester film is found to provide excellent adhesion to many aqueous or organic solvent based printing inks subsequently applied thereto.

Abstract: This invention relates to substituted 8-phenylisoxazolo[4,3-e][1,4]diazepin-5-ones of the formula ##STR1## wherein R is lower alkyl; R.sub.1 is hydrogen, amino alkyl, propargyl and lower alkyl; X is oxygen and sulfur; and Y is halogen, trifluoromethyl, lower alkyl, lower alkoxy and hydrogen. The compounds of this invention display useful anxiolytic and anticonvulsant activities.