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Showing 1 to 20 of 44 for “"Octene"”.
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Crystallization, Melting Behavior, Physical Properties, and Physical Aging of Ethylene/1-Octene Copolymers
… of the physical properties of ethylene/1-octene (EO)-copolymers after primary crystallization is investigated by calorimetry, density, and creep measurements. The temporal evolution of the multiple melting of EO-copolymers is monitored by differential scanning calorimetry. The low …
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Alkylated PTA platforms for mono- and polynuclear pre-catalysts for the aqueous biphasic hydroformylation of 1-octene
… in the aqueous biphasic hydroformylation of 1-octene. The hydroformylation reactions showed that the complexes (6 – 18) were all active when used as catalyst precursors in the aqueous biphasic hydroformylation of 1-octene to yield aldehydes (linear and branched) and iso-octenes as side …
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Morphology, Crystallization and Melting Behavior of Statistical Copolymers of Propylene with Ethylene, 1-Butene, 1-Hexene and 1-Octene
… propylene/1-hexene and propylene/1-octene) has been examined. The multiple melting behavior has been correlated with the presence of alpha and gamma phases and with the occurrence of cross-hatching morphology. The Crystallization and melting behavior of propylene/ethylene and …
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Dirhodium(II,II) paddlewheel complexes conjugated to a polypyridyl tris-amine scaffold: synthesis and application as asdjncaslpre-catalysts in the hydroformylation of 1-octene
… catalyst precursors in the hydroformylation of 1-octene. Model reactions were carried out with dirhodium(II,II) tetraacetate as a precursor varying time, pressure and temperature resulting in optimized conditions for the formation of aldehydes, with negligible effects on the activity observed in …
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Adhesion Studies of Polymers: (I) Autohesion of Ethylene/1-Octene Copolymers; (II) Method Development and Adhesive Characterization of Pressure Sensitive Adhesive in Paper Laminates for Postage Stamps
… part of this dissertation work, four ethylene/1-octene (EO) copolymers were used in the present study consisting of molecules with linear polyethylene backbone to which hexyl groups are attached at random intervals. These copolymers have similar number-average molecular weight (Mn) and …
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Zur Mikro- und Makrokinetik mehrphasiger heterogen-katalysierter Reaktionssysteme : Untersuchungen am Modellsystem der Ni-katalysierten Hydrierung von 1-Octen
… For this purpose the hydrogenation of 1-octene to n-octane on a commercially Ni-catalyst in a vibrating batch reactor was chosen as the model system. In such a system each mass transfer resistance can be defined stepwise and excluded by the systematical variation of the reaction condition …
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Part I. Solvolysis of Caryophyllen-8-Yl Derivatives: Model Reactions for Presilphiperfolanol Biogenesis. Part II. Stereochemistry of Lithium-Amine Reductions of Tetrasubstituted Epoxides and Phenylthiohydrins to Tertiary Alcohols
… Octalin, hydrindene, and bicyclo (3.3.0) octene epoxides were synthesized, and the product ratios from their reductions in NH$\sb3$ and EtNH$\sb2$ were determined and compared with those in ethylenediamine reported in the literature. Li-NH$\sb3$ reductions gave best selectivities. …
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Monometallic and multimetallic complexes as precatalysts in the hydroformylation of olefins
… 2.87 x 10-3 mmol Rh loading and a substrate (1-octene) to catalyst ratio of 2500 : 1. These conditions gave good aldehyde chemoselectivity (90%), excellent conversion of the substrate (99%) and good catalytic activity (554 h-1 ). Comparable catalytic performance of both precatalysts was obtained …
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Dimerization of naphtha-range Fischer-Tropsch olefins into diesel-range products over zeolite H-ZSM-5 and amorphous silica-alumina
In this study, the dimerization of 1-hexene and 1-octene (as model compounds for Fischer-Tropsch naphtha-range olefins) into diesel-range olefins was carried out in a tubular, continuous flow fixed-bed reactor, in the liquid phase, over zeolite H-ZSM-5 and an amorphous silica-alumina (ASA) …
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Design, synthesis and characterization of water soluble heterobimetallic complexes and their evaluation as aqueous biphasic hydroformylation catalysts
… for the aqueous biphasic hydro formylation of 1-octene.The mononuclear ferrocenyl complexes were inactive in the aqueous biphasic hydroformylation experiments. Hydroformylation using the heterobimetallic complexes showed that the pre-catalysts are active in 1-octene conversion, yielding aldehydes …
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Design, Synthesis and Catalytic Evaluation of Mono- and Polynuclear Organometallic Materials as Hydroformylation Catalysts
… catalyst precursors in the hydroformylation of 1-octene. The reaction conditions were optimised at 75 ℃, 40 bar syngas pressure for 4 h with 2.87 x 10-3 mmol catalyst loading. The sulfonated 1,4-diazabutadiene Rh(I) complexes displayed excellent conversion of 1-octene (> 98%) and good …
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Use of water-soluble phosphine ligands in heterogeneous hydroformylation catalysis : application to long-chain 1-alkenes
… (Rh-TPPTS) system for the hydroformylation of 1-octene, 1-decene, and 1-dodecene to the corresponding aldehydes, has been investigated. Due to the two distinct phases - the catalytic species in the aqueous phase and the products and reactants in the organic phase - the separation of the catalyst …
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Dendritic rhodium catalyst precursors for the hydroformylation of olefins
… were active in the hydroformylation of 1-octene. The N,O-salicylaldimine metallodendrons displayed good to excellent conversion (78 – 100%), good chemoselectivity (66 – 95%) and moderate regioselectivity (51 – 67%). In contrast, the N,P-iminophosphine metallodendrons displayed low …
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Slow crack growth and associated plastic deformation in linear medium-density polyethylene
… an $\alpha$-olefin, generally either a hexene or octene, which causes side branches of 4 or 6 carbons respectively. The amount of branches is kept fairly low, somewhere in the range of 3-10 branches per 1000 backbone carbons, such that the resultant density is between 0.926 and.940 gm/cc.
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Properties and foaming behaviour of thermoplastic olefin blends based on linear and branched polypropylene
… PP with a dispersed phase of an ethylene-octene copolymer was performed. Blends containing branched PP showed improved stiffness and flexural properties. Given that the morphology and interfacial tension of the blends remain virtually unaffected, these improvements are attributed to the …
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Processing-Structure-Property Studies of: I) Submicron Polymeric Fibers Produced By Electrospinning and II) Films Of Linear Low Density Polyethylenes As Influenced By The Short Chain Branch Length In Copolymers Of Ethylene/1-Butene, Ethylene/1-Hexene & Ethylene/1-Octene Synthesized By A Single Site Metallocene Catalyst
… ethylene/1-hexene, and ethylene/1-octene were utilized that were very similar in terms of their molecular weight and distribution, melt rheology, density, crystallinity and short chain branching content and its distribution. Interestingly, at higher deformation rates (ca. 1m/s), the …
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Zur rhodiumkatalysierten Hydroformylierung von Octenen : neue Ligand- und Lösungsmittelkonzepte
… ligands for the n-selective hydroformylation of octenes and investigations on the recycling of the catalyst using two-phase systems and temperature-dependent solvent systems and ligands based on polyethylene glycols. The synthesis of monocyclic phosphites and their use in the hydroformylation of …
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Aromatization of alkenes by gallium/H-ZSM-5 zeolite catalysts
… activity for the aromatization of 1-hexene and 1-octene.
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Polyolefin plastomers in composites for flooring applications
… is Affinity 1140 a copolymer of ethylene and octene, and does not require any plasticizers for processing. The key mechanical properties of the calcium carbonate-filled POP, which include tensile strength, elongation and impact strength, are found to compare very favourably to those of PVC …
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The evolution of molybdenum and tungsten olefin metathesis catalysts
… olefins. Substrates screened were: 1-hexene, 1-octene, allylbenzene, allyltrimethylsilane, methyl-9-decenoate, methyl- 10-undecenoate, allylboronic acid pinacol ester, allylbenzylether, allyltosylamide, Nallylaniline, allyloxy(tert-butyl)dimethylsilane, and allylcyclohexane. Homocoupled products …
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