Abstract:
Ethylene and butadiene are copolymerized in the presence of a ternary catalyst system consisting of: (a) vanadium or vanadyl chloride; (b) an aluminum compound represented by the formula: Al RxX3 x, wherein R is alkyl, aryl, alicyclic or hydrogen, X is a halogen and 1
Abstract:
A method is described whereby olefin terpolymers, consisting of ethylene, an alpha olefin and a polyene having in the molecule, in addition to the double bond participating in the formation of the macromolecule, at least one conjugated double bond system, are stabilied against oxidative aging without destroying their characteristic high vulcanization rate by reacting them with a dienophilic agent represented by one of the following formulae:
WHEREIN R and R6 may be an alkyl, alkenyl, cycloalkyl, aryl or aralkyl radical having up to 8 carbon atoms, R1, R2, R3, R4 and R5 may be hydrogen or alkyl, aryl, cycloalkyl or aralkyl radicals having up to 8 carbon atoms, the R1-R2 and R-R pairs may be divalent radicals forming condensed rings.
Abstract:
A tandem radiography vehicle for use in pipelines includes a carriage assembly, having an internal combustion engine and a dynamo-alternator motor for driving the vehicle, and powering an X-ray tube. Electronic circuitry for controlling the operation and power to the X-ray tube are included. A compass control system on the carriage is activated by a magnet externally positioned on the pipeline for positioning the vehicle at a weld inspection area. Means for segregating exhaust from the engine are also disclosed.
Abstract:
Synthetic, high quality lubricating oils are produced through the polymerization of a single alpha-olefin or a mixture of alpha-olefins from ''''wax-cracking'''' having the formula R - CH CH2 wherein R is an alkyl radical containing from 2 to 16 C atoms, by the use, in a dry nitrogen atmosphere, of a catalyst system constituted by a compound of a transition metal selected from groups IV to VIII of the periodic system (e.g., TiCl4) and by two coordinate anionic cocatalysts, one of which is an aluminum compound of inorganic nature devoid of any metal-carbon bond and consisting of a polyiminic linear polymer (e.g., a polyimine alane represented by the formula:
WHEREIN R is alkyl, aryl or cycloalkyl and n is a whole number from 4 to 25) and the other of which is an aluminum compound of the conventional Ziegler type with a metal-carbon link (e.g., an aluminum alkyl sesquichloride or an aluminum dialkyl monochloride.
Abstract:
A process for the stercospecific polymerization of conjugated diene by polymerizing in the presence of a catalyst comprising a compound of a transition metal of titanium vanadium zirconium, cobolt, manganese and nickel and a polyiminic polymer.
Abstract:
The present invention relates to a self-adjusting carriage device which is able to move along curved profile paths such as pipelines and the like, effecting various operations including the inspection, cleaning and varnishing of a pipe, and comprising a self-adjusting guide system, and thereby always able to maintain a rectilinear path along a pipeline or other curved profile path.
Abstract:
1. A PROCESS FOR TRANSFORMING AN OLEFINIC COMPOUND INTO A MIXTURE OF COMPOUNDS WHICH COMPRISE A COMPOUND THAT IS THE CORRESPONDING SATURATED HYDROCARBON AND A COMPOUND THAT IS THE CORRESPONDING DIOLEFIN, SAID PROCESS COMPRISING PASSING AN OLEFIN OVER (IR(P(C6H5)3)2)2, SAID PROCESS BEING CARRIED OUT AT A PRESSURE EQUAL TO OR HIGHER THAN ATOMSPHERIC PRESSURE.
Abstract:
1. A PROCESS FOR PREPARING INDOLE BY PYROLYSIS, COMPRISING SUBJECTING 1,1''-DIPHENYLAMINOETHANE TO A TEMPERATURE OF ABOUT 500*C. TO ABOUT 700*C. FOR A TIME FROM ABOUT 2 TO ABOUT 5 SECONDS.
WHEREIN N IS NITROGEN; C IS CARBONIUM; R IS A MEMBER OF THE GROUP CONSISTING OF HYDROGEN, LOWER ALKYL, LOWER ALKENYL AND CARBOCYCLIC MONOCYCLIC ARYL; A AND B ARE MEMBERS OF THE GROUP CONSISTING OF LOWER ALKYL LOWER ALKENYL, MONOCYCLIC CARBOCYCLIC ARLY AND ARALKYL REPRESENTED BY CH3C6H.4 AND C2H5H.4, ARE CAUSED TO REACT INTHE VAPORR PHASE BY HEATING SAID OXYGEN AND IMINE TOGETHER IN THE MOLAR RANGE FROM 0.2:01 TO 10:1 TO A TEMPERATURE IN THE RANGE OFF 300* TO 800* C. FOR A TIME RANGING FROM 0.1 TO 20 SECONDS IN THE PRESENCE OF ACTIVATED SILICA AND STEAM. 1. A PROCESS FOR THE PRODUCTION OF HIGH YIELDS OF INDOLE AND ALKYL, ARALKYL AND PHENYL SUBSTITUTED INDOLES THROUGH THE OXIDATIVE DEHYDROCYCLIZATION OF IMINES WHEREIN OXYGEN AND THE CORRESPONDING IMINE RE MULA
Abstract:
1. A PROCESS FOR PREPARING ETHYLENE-BUTADIENE COPOLYMERS, SAID PROCESS COMPRISING COPOLYMERIZING ETHYLENE AND BUTADIENE IN THE PRESENCE OF AN INERT SOLVENT, AT A PRESSURE RANGING FROM 1 TO 150 ATMOSPHERES, AT A TEMPERATURE RANGING FROM -30* TO 100* C. AND IN THE PRESENCE OF A CATALYTIC SYSTEM COMPRISING. (A) AN OXYGEN CONTAINING ORGANIC VANADIUM COMPOUND HAVING V-O-C BONDS SELECTED FROM THE GROUP CONSISTING OF OV(OR3, V(OR)4 AND V(OR)3 WHEREIN R IS AN ALKYL, ARYL OR CYCLOALKYL RADICAL; (B) AN ALUMINUM COMPOUND HAVING THE FORMULA ALR''XX3-X WHEREIN R'' IS AN ALKYL, ARYL CYCLOALKYL RADICAL, OR HYDROGEN ATOM, X IS A HALOGEN ATOM AND WHEREIN 1