Abstract: A process for producing acrylic polymers which have high thermal stability, are free of defects and have a low level of unreacted monomer. The process includes the polymerization at a high production rate of a methyl methacrylate syrup in the presence of a mixture of two peroxide initiators. The first initiator has a 5-minute half-life at temperatures between about 75.degree. C. to 100.degree. C. and emits a maximum of 1 mole of carbon dioxide per 2 moles of free radicals. The second initiator has a one minute half-life at temperatures of between about 105.degree. C. to about 125.degree. C. and emits a maximum of 1 mole of carbon dioxide per 1 mole of free radicals.

Abstract: A down hole blow out preventer which can be installed at the lower end of a drill string as close as possible to the drill bit and which can isolate an unexpected producing zone in a bore hole from the rest of the hole by closing off the drill string at its lower end and closing off the annulus between the drill string and the wall of the bore hole by means of an inflatable packer. The packer can be operated when a predetermined pressure difference exists between the annulus and the mud column inside the tool.

Abstract: A process for liquid-phase separation of ethylene glycol from mixtures containing propylene glycol by selective adsorption on at least one aluminosilicate zeolite selected from the group consisting of X zeolite, Y zeolite, and A zeolite is disclosed.

Abstract: 7-Thiabicycloheptane substituted amino prostaglandin analogs are provided having the structural formula ##STR1## wherein R is hydrogen, lower alkyl, alkali metal, glucamine salt or trihydroxymethylaminomethane salt, R.sup.1 is H (where X.noteq.O), lower alkyl, aryl, aralkyl, cycloalkyl or cycloalkylalkyl, R.sup.2 is hydrogen or lower alkyl, A is --CH.dbd.CH-- or --(CH.sub.2).sub.2 --, n is 1 to 4, and m is 1 to 8, and including all stereoisomers thereof.The compounds are cardiovascular agents useful, for example, in the treatment of thrombotic disease.

Abstract: Thiabicycloheptane substituted prostaglandin analogs are provided having the structural formula ##STR1## and including all stereoisomers thereof. The compounds are cardiovascular agents useful, for example, in the treatment of thrombotic disease.

Abstract: 7-Oxabicycloheptane substituted oxa prostaglandin analogs are provided having the structural formula ##STR1## wherein R is OH, ##STR2## (wherein R.sup.3 is lower alkyl, aryl, arylalkyl or lower alkylamino), ##STR3## (wherein R.sup.4 and R.sup.5 are the same or different and can be H, alkyl, aryl or arylalkyl, and R.sup.6 is alkyl or O-alkyl); R.sup.1 is lower alkyl, aryl, aralkyl, cycloalkyl or cycloalkylalkyl; R.sup.2 is hydrogen or lower alkyl; A is --CH.dbd.CH-- or --(CH.sub.2).sub.2 --; n is 1 to 4, and m is 1 to 8, and including all stereoisomers thereof.The compounds are cardiovascular agents useful, for example, in the treatment of thrombotic disease.

Abstract: Antimicrobial activity is exhibited by compounds having the formula ##STR1## wherein R.sub.1 is hydrogen or aryl;R.sub.2 is hydroxymethyl, carboxyaldehyde, propenalyl, 3-hydroxy-1-propenyl, or 3-hydroxy-1,2-epoxypropyl; andn is 2 and m is 1 or n is 3 and m is 0; with the proviso that if R.sub.1 is hydrogen, n is 2 and m is 1.

Abstract: A process for the polymerization of fluorinated olefin monomers using a fluoroxy compound solution as initiator, wherein said solution has a fluoroxy compound concentration of at least 0.5 meq/liter. The concentration contains, based on the total number of fluoroxy compounds present, about 35 to 100% of an acyl hypofluorite of the formula RCOOF wherein R is X(CF.sub.2).sub.n -- or CF.sub.3 CF.sub.2 CF.sub.2 O[CF(CF.sub.3)CF.sub.2 O].sub.m CF(CF.sub.3)-- wherein n is 1 to 16, m is 0 to 50, and X is H or F.

Abstract: A soluble polyimide derived from dehydration of a polyamic acid which is the liquid phase condensation reaction product of a solution in aprotic solvent of approximately equimolar amounts of aromatic dianhydride and aromatic diamine. At least 50 mole % of the dianhydride must have ring linkages which prevent conjugation between the rings and at least 20 mole % of the diamine must contain electron withdrawing groups.

Abstract: In a partial oxidation process the gaseous effluent from a reactor is contacted with water to cool and remove solid particulates, i.e., ash and soot. The water from this operation is then mixed with an organic extractant, e.g., naphtha, and fed into a decanter to form aqueous and organic phases. The aqueous phase from the decanter is fed to a water flash separator to remove dissolved gases. The solids in a portion of the water flash separator bottoms are further concentrated in a hydrocyclone and thereafter purged. The remaining water is recycled for recontact with the gaseous effluent.

Abstract: A seal of the type having a housing with internal resilient fingers for receiving a shouldered stud in locking engagement. The housing is generally cylindrical with a closed end and an open end. In one embodiment of the invention a separate member carrying the resilient fingers is secured into the open end of the housing. In another embodiment of the invention a cylindrical metallic member having an open end and a closed end is retained in the housing behind the member carrying the resilient fingers so that access to the fingers to release the stud cannot be had by cutting off the end of the plastic housing, and the fingers cannot be manipulated by the insertion of a needle or other sharp instrument through the exterior of the housing.

Abstract: A process for preparing triglycerides which are suitable as a lipid base for an injectable composition is described.

Abstract: A novel antifungal antibiotic which has been designated EM5487 is prepared by cultivating Lysobacter gummosus A.T.C.C. No. 39472 under submerged aerobic conditions in an aqueous nutrient medium containing an assimilable carbohydrate and nitrogen source.

Abstract: A compound having the formula ##STR1## can be prepared by heating an anion having the formula ##STR2## with a cation having the formula ##STR3## or a cation having the formula ##STR4##

Abstract: A universal magnetic utensil mounting bar has an integral modular frame of generally elongated, rectangular configuration. The frame includes on one side thereof, a central channel shaped recess which extends longitudinally from end-to-end thereof. The opposite side of said module includes a pair of parallel, longitudinally extending, vertically spaced recesses disposed outwardly of the central recess. A magnetic rod and pole pieces are disposed in each of the parallel recesses. The central recess is adapted to receive selectively therein another elongated magnetic rod and pole pieces, a mounting bar portion of a towel rack, the bar portion of utensil support hooks and the bar portion of a dispensing spindle for a roll of paper towels.

Abstract: A mechanical starter is formed by two disc-shaped elements coaxial with e other and rotatable with respect to each other to which at least two strips of elastomeric material, coplanar with each other, are fixed through their ends. One of the two disc-shaped elements is secured to an envelope of the internal combustion engine while the other disc-shaped element rotates with respect to the first. Apparatus is provided for deforming the strips of elastomeric material to thereby store energy in the strips and for delivering the stored energy to the shaft of the engine.

Abstract: Layered coherent structures characterized by periodic, alternating layers of cobalt and palladium and/or platinum exhibit perpendicular magnetic anistropy.

Abstract: To prevent the rapid escape of high-pressure explosion gases when an explosive charge is initiated in a borehole, the hole is stemmed with chunks of readily liquefiable and/or vaporizable solid material, preferably chunks of ice and/or chunks of dry ice, piled up one upon the other so as to form a columnar bed of pre-solidified stemming material. The column remains in place during the explosion, and thereafter disappears by melting and/or subliming on absorbing heat from the surrounding formation. A preferred stemming column comprises a combination of ice chunks and chunks of dry ice, e.g., wherein the ratio of dry ice to ice in the column decreases with distance from the explosive charge.

Abstract: A combination seal and locking pin for a fire extinguisher handle or other device in which two members must be retained in fixed relation to each other, in which the seal portion comprises a housing, a shackle to be received in the housing in locking relation and a pull ring for breaking the seal. The locking pin is detachably mounted onto the seal in a relationship such that pulling on the pull ring pulls the pin out of engagement with the handle and breaks the seal. The pull pin may be removed from the broken seal and assembled onto a new seal.

Abstract: A dipole phase shifter for use in a phased array antenna includes an insulating substrate having first and second sides. A dipole element having first and second conductive dipole arms is formed on the first side of the insulating substrate and a PIN/NIP diode pair is mounted on the second side of the insulating substrate and electrically-connected to the first and second dipole arms, respectively. A coaxial RF transmission line having a center conductor extending through the insulating substrate connects an input signal to the phase shifter. Quarter-wave transformers are connected between the center conductor and the diodes to compensate for the forward and reverse bias reactances thereof. The first and second dipole arms serve as groundplanes for the quarter-wave transformers. The center conductor also serves as a common bias line which allows forward biasing of one diode and, simultaneously, reverse biasing of the other diode.