Abstract: The copolymerization of ethylene with vinylcyclohexane is carried out with a catalyst system comprising a bridged hafnocene. When relatively low levels of vinylcyclohexane are incorporated, the ethylene-vinylcyclohexane copolymers have high degrees of crystallinity as measured by differential scanning calorimetry (Xc in %). These copolymers have good thermoformability.

Abstract: The copolymerization of ethylene with a cyclic mono olefin (such as norbornene) is conducted in the presence of a catalyst system comprising a bridged hafnocene catalyst and a three part activator. The catalyst system provides excellent activity at high polymerization temperatures. Copolymers produced according to this invention have unique microstructure (with methyl branching being observed) and unique rheology.

Abstract: The present invention provides a transfer line exchanger which is optimized for one or more objective functions of interest such as pressure drop, erosion rate, fouling, coke deposition and operating costs. The transfer line exchanger is designed by computer modeling a transfer line exchanger in which the cross section of flow path is substantially circular and modeling the operation of the transfer line under industrial conditions to validate the model design and its operation. Then iteratively the model design is deformed and the operation of the deformed part is modeled and compared to values obtained with other deformed models until the value of the objective function is optimized (e.g. at an extreme) or the change in the objective function is approaching zero.

Abstract: A process, a system, and an apparatus are provided for converting a lower alkane to an alkene. Oxygen and a lower alkane are provided to an ODH reactor. At least a portion of the lower alkane is converted to an alkene and an ODH stream comprising the alkene, an oxygenate, water, and carbon monoxide is produced. The ODH stream is provided to a water gas shift/hydrogenation (WGS/H) reactor including a WGS/H catalyst. The ODH stream is reacted within the WGS/H reactor and hydrogen and carbon dioxide are generated from the carbon monoxide and water. At least a portion of the oxygenate and hydrogen are converted to an alcohol. Additionally, the alcohol may be dehydrated to form additional alkene and water.

Abstract: This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, from ?0.05 to ?0.80; a first derivative of a melt flow distribution function, formula (I) at a loading of 4000 g, from >?1.51 to ??1.15; a sum of unsaturation, SUMU, from ?0.005 to <0.047 unsaturations per 100 carbon atoms; and a residual catalytic metal from ?0.03 to ?5 ppm of hafnium. Ethylene interpolymer products comprise at least two ethylene interpolymers. Ethylene interpolymer products are characterized by a melt index (I2) from 0.3 to 500 dg/minute, a density from 0.855 to 0.975 g/cc and from 0 to 25 mole percent of one or more a-olefins. Ethylene interpolymer products have polydispersity, Mw/Mn, from 1.7 to 25; and CDBI50 values from 1% to 98%. These ethylene interpolymer products have utility in flexible as well as rigid applications.

Abstract: In some embodiments a Stand Up Pouch (SUP) is prepared using a polyethylene structure having a first web and a second web. The webs are laminated together to form the polyethylene structure that is used to prepare the SUP. One web contains a layer of recycled polyethylene (r.PE). In some instances, the use of r.PE has been observed to reduce the effectiveness of the sealant layer of the overall structure. In some embodiments, the SUP disclosed herein has a two layer sealant system to mitigate this problem.

Abstract: A four component additive package that contains a first phosphite, a second phosphite, a primary antioxidant and an optical brightener is used in combination with a polyethylene that is polymerized with a mixed catalyst system that contains two different types of catalysts. The stabilized polyethylene exhibits improved color performance.

Abstract: Compositions for forming rotationally molded (rotomolded) parts, methods for forming the rotomolded parts, and the rotomolded parts are provided. An exemplary rotomolding composition includes a virgin resin, including a polyethylene polymer, and a postconsumer recycle (PCR) resin.

Abstract: Disclosed herein are the design and construction methods for a specialized structure, or “cabinet”, to house compressed gas cylinders such that they may be kept within an ordinary building.

Abstract: Oxidative dehydrogenation catalysts for converting lower paraffins to alkenes such as ethane to ethylene when prepared as an agglomeration, for example extruded with supports comprising slurries of Nb2O5.

Abstract: This disclosure relates to an improved continuous solution polymerization process wherein production rate is increased. Process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a first reactor to form a first ethylene interpolymer. Optionally, process solvent, ethylene, optional comonomers, optional hydrogen and a bridged metallocene catalyst formulation are injected into a second reactor forming a second ethylene interpolymer. The first and second reactors may be configured in series or parallel modes of operation. Optionally, a third ethylene interpolymer is formed in a third reactor, wherein a homogeneous catalyst formulation or a heterogeneous catalyst formulation is employed. In solution, the first, optional second and optional third ethylene interpolymers are combined, the catalyst is deactivated, the solution is optionally passivated and following a phase separation process an ethylene interpolymer product is recovered.

Abstract: An ethylene interpolymer product comprises a first component with an undetectable level of long-chain branches and a second component with a detectable level of long-chain branches wherein said first component has a weight-average molecular weight higher than said second component. The ethylene interpolymer product is characterized as having (a) an Arrhenius type flow activation energy Ea greater than or equal to 33 kJ/mol and less than or equal to 45 kJ/mol; and (b) a number-average relaxation time tn measured at 190° C. greater than or equal to 2 ms and less than or equal to 15 ms, wherein said number-average relaxation time is calculated using zero-shear viscosity ?0 at 190° C. in kPa·s and plateau modulus Formula (I) at 190° C. in MPa, according to Formula (II). Film made from the ethylene interpolymer product may be characterized by a hot-tack peak strength from about 12 N to about 20 N and a lubricated puncture resistance from about 100 J/mm to about 150 J/mm.

Abstract: A system and method for coproduction in the production of ethylene, including contacting ethane with an oxidative dehydrogenation (ODH) catalyst in presence of oxygen in a first reactor to dehydrogenate ethane to ethylene, and contacting a first-reactor effluent with an ODH catalyst in a second reactor to form ethanol and acetaldehyde.

Abstract: A polyethylene composition including a first polyethylene which is an ethylene copolymer having a weight average molecular weight of from 70,000 to 250,000 and a molecular weight distribution Mw/Mn of <2.3, a second polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 50,000 to 200,000 and a molecular weight distribution Mw/Mn of <2.3, and a third polyethylene which is an ethylene copolymer or homopolymer having a weight average molecular weight of from 70,000 to 200,000 and a molecular weight distribution Mw/Mn of <2.3, where the first polyethylene has more short chain branching than the second polyethylene or the third polyethylene.

Abstract: This disclosure relates to ethylene interpolymer products comprising a Melt Flow-Intrinsic Viscosity Index value, MFIVI, of from ?0.05 to ?0.80; a first derivative of a melt flow distribution function, formula (I) of form ??1.85 to ??1.51; an unsaturation ratio, UR, of from >0.06 to ?0.60; and a residual catalytic metal of from ?0.03 to ?5 ppm of hafnium. Ethylene interpolymer products comprise at least two ethylene interpolymers. Ethylene interpolymer products are characterized by a melt index (I2) from 0.3 to 500 dg/minute, a density from 0.855 to 0.975 g/cc and from 0 to 25 mole percent of one or more a-olefins. Ethylene interpolymer products have polydispersity, Mw/Mn, from 1.7 to 25; and CDBI50 values from 1% to 98%. These ethylene interpolymer products have utility in flexible and rigid applications.

Abstract: Provided in this disclosure are catalyst compositions. The catalyst compositions include an oxidative dehydrogenation catalyst that includes a mixed metal oxide having the empirical formula: Mo1.0V0.12-0.49Te0.05-0.17Nb0.10-0.20AlcOd wherein c is from 0 to 2.0 and d is a number to satisfy the valence of the oxide. The compositions are at least 40 wt. % amorphous as measured by XRD. The disclosure also provides methods of making the compositions.

Abstract: Provided in this disclosure is an ethylene interpolymer composition. The ethylene interpolymer composition includes a first ethylene interpolymer, a second ethylene interpolymer, and a third ethylene interpolymer. Further, the ethylene interpolymer composition has a density of at least 0.945 g/cm3; an environmental stress crack resistance (ESCR), measured according to ASTM D1693, Condition B, 10% IGEPAL CO-360, of at least 90 hours; and an Izod impact strength of at least 80 J/m, as measured according to ASTM D256.

Abstract: Mixed metal oxide catalysts having an amorphous content of not less than 40 wt. % are prepared by calcining the catalyst precursor fully or partially enclosed by a porous material having a melting temperature greater than 600° C. in an inert container including heating the catalyst precursor at a rate from 0.5 to 10° C. per minute from room temperature to a temperature from 370° C. to 540° C. under a stream of pre heated gas chosen from steam and inert gas and mixtures thereof at a pressure of greater than or equal to 1 psig having a temperature from 300° C. to 540° C. and holding the catalyst precursor at that temperature for at least 2 hours and cooling the catalyst precursor to room temperature.

Abstract: A medium pressure solution phase polymerization process is provided in which the amount of long chain branching present in an ethylene/1-octene copolymer is controlled with a bridged hafnocene polymerization catalyst in the presence of different polymerization process conditions.

Abstract: The present disclosure describes bottle closure assemblies which are made at least in part with a polyethylene composition having good processability, good organoleptic properties and good dimensional stability. The bottle closure assembly includes a cap portion, an elongated tether portion, and a retaining means portion. The retaining means portions engages a bottle neck or an upper portion of a bottle. The elongated tether portion connects at least one point on the cap portion to at least one point on the retaining means portion so as to prevent loss of the cap portion from a bottle.