Abstract: An electrical contact pin for mounting in a printed circuit board. The pin has an H-shaped contact portion cross-section which is mounted in the hole by compliant press-fit action. The H-shaped cross-section comprises four compliant pins and a crossbar. The floor of the crossbar is V-shaped and the transition between the pins and floor is rounded. The height and thickness of the fins on each side of the V-shaped floor are substantially the same, thereby minimizing or eliminating rotation of the pin during insertion into the hole.

Abstract: A vented suppressive shielding device which may be used in either a permanent building placent or portable device to protect persons or equipment from the effects of an explosive detonation. The shielding is relatively lightweight and comprises a shielding barrier having a frame means, the frame means carrying at least two barrier means in selected position relative to one another. The shielding barrier has oppositely facing surface members, wherein one of these surface members is disposed so as to face an explodable device, with the other surface facing away from the explodable device. Each one of the barrier means is located adjacent to one of the surface members such that one of the barrier means is free to move in the space defined by the frame means and relative to the frame means.

Abstract: Process for preparing "living" polymer, the process comprising contacting one or more acrylic monomers under polymerizing conditions with a polymerization-initiating amount of a tetra-coordinate organotitanium, organozirconium or organo-hafnium polymerization initiatior, and "living" polymers produced thereby.

Abstract: 1,4-Dihydropyrimidines of the formula ##STR1## wherein X is sulfur or oxygen and R.sub.4 is aryl or heterocyclo and disclosed. These compounds are useful as cardiovacular agents, particularly anti-hypertensive agents, due to their vasodilator activity.

Abstract: The process employs solid-state halides heated at high temperature, under pressure conditions necessary to their vaporization, and obtains their condensation to a solid state on the internal surface of a glass tube, which, after collapsing, forms the preform.

Abstract: A fiber having 1/2-50% substantially gas-filled and essentially all closed cells having a diameter of 0.2-25 microns and a length to diameter ratio of greater than 500 is disclosed. The fiber is made by mixing a fluorocarbon blowing agent into molten polymer, shearing the polymer at a high shear rate, extruding the polymer in a spinneret capillary at a low jet velocity and a low capillary entrance pressure and drawing down the polymer at a total extension greater than 1000.

Abstract: N-Methylol derivatives of herbicidal 4-amino-1,2,4-triazine-5-ones can be prepared by reacting formaldehyde with a 4-amino-1,2,4-triazine-5-one slurried in water under basic conditions. The N-methylol derivatives can be surface-modified by slurrying particles of the derivatives in water and treating with a strong acid or strong base, producing a product that releases the original herbicidal 4-amino-1,2,4-triazine-5-one in a controlled manner.

Abstract: A high power RF resistor for use, for example, as an isolation resistor in an RF hybrid splitter/combiner is formed on a thermally conductive substrate. A first insulating beryllia (BeO) layer extends over the substrate and has a top surface and a bottom surface. A first metallization layer extends over the top surface of the first insulating layer and includes a longitudinally-extending gap. A second insulating BeO layer is positioned above the first insulating layer and includes a top surface, a bottom surface and first and second side surfaces. A second metallization layer surrounds the bottom surface and the first and second side surfaces of the second insulating layer and has a longitudinally-extending gap, the gap in the second metallization layer positioned to be in alignment with the gap in the first metallization layer. This structure forms a Faraday shield between the resistive layer and ground to thereby reduce the I.sup.

Abstract: It has been found that if two different chlorosulfonated polyethylenes, each with its own specific selected chlorine and sulfur content range, are blended with polyvinyl chloride, the resulting three-phase blend has good oil resistance and low temperature toughness.

Abstract: Agglomerates of spheroidal masses of malachite crystals are prepared so that they contain silicic acid. These agglomerates can be used to prepare a copper-acetylide complex, which in turn can be used as a catalyst for the preparation of 1,4-butynediol from acetylene and formaldehyde.

Abstract: A process for making highly pure cyclic esters by heating a copolymer of .alpha.-hydroxy acid or its ester on a thermally stable polyether core.

Abstract: A coating composition useful as an exterior for automobiles and trucks and as a refinish composition containing a film forming binder and a carrier for the binder; wherein the binder contains(1) a reactive component of the formula ##STR1## where R is a divalent or trivalent aliphatic or cycloaliphatic group,R.sup.1 is an alkyl group having 1-4 carbon atomsn is 2-3(2) a hydroxy containing acrylic polymer having drying oil fatty acid moieties and a hydroxyl number of 20-500 and(3) an organo metallic alkylate selected from the group of an aluminum, titanium, zirconium alkylate, or mixtures thereof.The composition can be applied by conventional techniques such as spraying and cures at ambient temperatures or can be baked at relatively low temperatures.

Abstract: A solid photopolymerizable composition, contains addition polymerizable ethylenically unsaturated monomer, initiating system, polymer binder and a microgel wherein preferably the binder and microgel form substantially a single phase and have a similar glass transition temperature above 25.degree. C. Although less preferred the solid composition can function without the binder. A preferred use is as a photoresist.

Abstract: Aromatic polyamide filaments of higher strength are obtained by drying air-gap spun filaments under tension while controlling the moisture content of the dried filaments.

Abstract: Polyhalohydroxyisopropyl phenylalkanoic and phenylalkenoic acids, amides, and esters, such as methyl 2-methoxy-4-[2,2,2-trifluoro-1-hydroxy-1-(trifluoromethyl)ethyl]benzenepro panoate, are useful as antihypertensive agents.

Abstract: A coating composition containing a film forming binder and a carrier for the binder; wherein the binder consists essentially of(1) a reactive polyurethane of the formula ##STR1## where R is a divalent or trivalent aliphatic or cycloaliphatic group,R.sup.1 is an alkyl group having 1-4 carbon atoms, n is 2-3;(2) a hydroxy containing polymer having a hydroxyl number of 50-200 and having pendent ester groups;(3) an organo metallic alkylate catalyst selected from the group of an aluminum alkylate, zirconium alkylate, titanium alkylate or mixtures thereof.The composition can be applied by conventional techniques such as spraying and can be cured at relatively low baking temperatures.

Abstract: An optical switch for opening and shutting a light path comprising a housing, a shutter movably supported in the housing for shutting off and transmitting incident light, and a drive mechanism supported in the housing for displacing the shutter. The optical switch has two connector sockets provided in the housing, and a first and a second optical fiber. One end of the first optical fiber faces one end of the second optical fiber with a predetermined distance between them and the other ends of these optical fibers are fitted respectively in the connector sockets. The shutter is disposed between the facing ends of the optical fibers. In another aspect, the housing includes at least one pair of fiber holding sections for holding the end portions of at least one pair of optical fibers so that they face each other with a predetermined distance between them, and the shutter is movably supported between the fiber holding sections in each pair of the fiber holding sections.

Abstract: An antifungal pastille formulation, preferably containing nystatin as the antifungal agent, is provided which is soft and smooth in texture and when dissolved slowly in the mouth does not cause irritation of and will not adhere to oral mucosa and yet distributes nystatin in sufficiently high saliva concentrations, throughout the oral cavity, for long enough periods of time so as to be particularly effective in the treatment of candidiasis in the oral cavity and esophagus. A method for treating candidiasis in the oral cavity and esophagus employing the antifungal pastille and a method for preparing a nystatin pastille formulation are also provided.

Abstract: A glycoside compound containing one or more fatty acid ester or ether groups is used as a mold release agent in the production of molded articles from polymeric resinous materials. Said mold release agent can function as either external or internal mold release agent. The molded article also has improved tie coating properties.

Abstract: A new and distinct variety of plum tree which is somewhat similar to the Elephant Heart Plum Tree (unpatented) from which it is a scaffold mutation but which is distinguished therefrom by having a greenish-yellow skin color, a prominent suture line, and a unique, attractive orangish-yellow flesh having red striations which extend from the pit cavity to an area adjacent to the skin surface and which is further aromatic and of excellent eating quality.