Results 31 to 40 of about 92,840 (303)

Scope and limitations of aliphatic Friedel-Crafts alkylations. Lewis acid catalyzed addition reactions of alkyl chlorides to carbon-carbon double bonds [PDF]

, 1983
Lewis acid catalyzed addition reactions of alkyl halides 1 with unsaturated hydrocarbons 2 have been studied. 1:l addition products 3 are formed if the addends 1 dissociate faster than the corresponding products 3; otherwise, polymerization of 2 takes ...
Mayr, Herbert, Striepe, Wilhelm
core   +1 more source

Impact of Reaction System Turbulence on the Dispersity and Activity of Heterogeneous Ziegler–Natta Catalytic Systems for Polydiene Production: Insights from Kinetic and CFD Analyses

Compounds
An analysis was conducted to investigate how reaction system turbulence affects the butadiene-isoprene copolymerization in the presence of the TiCl4 + Al(i-Bu)3 catalytic system.
Konstantin A. Tereshchenko, Nikolai V. Ulitin, Rustem T. Ismagilov, Alexander S. Novikov   +3 more
doaj   +1 more source

A Comparative Study of the Formation of Aromatics in Rich Methane Flames Doped by Unsaturated Compounds

, 2009
For a better modeling of the importance of the different channels leading to the first aromatic ring, we have compared the structures of laminar rich premixed methane flames doped with several unsaturated hydrocarbons: allene and propyne, because they ...
Benson, Bounaceur, Braun-Unkhoff, Cole, Colket, Da Costa, Dayma, Ellis, F. Battin-Leclerc, Gueniche, Gueniche, Gueniche, H.A. Gueniche, Hansen, Heyberger, J. Biet, Jones, Lamprecht, Law, Lifshitz, Marinov, McEnally, Miller, Miller, Muller, P.A. Glaude, R. Fournet, Rasmussen, Ritter, Troe, Wang, Westmoreland   +31 more
core   +2 more sources

Maximizing the Strength of Fused-Deposition ABS Plastic Parts [PDF]

, 1999
Fused-Deposition (FD) creates parts using robotic extrusion of set.D.i-liquid .polymer fiber, which molecularly bonds with neighboring fibers via thermal-dlffuslo.n bonding. T~e strength ofthe.
Renaud, J. E., Rodriguez, J. F., Thomas, J.P.   +2 more
core   +1 more source

"Application of heterogeneous alkylaluminum in neodymium system catalyzed coordinative chain-transfer copolymerization of butadiene and isoprene"

Hecheng xiangjiao gongye
The copolymerization of butadiene and isoprene was carried out using neodymium neodecanoate/heterogeneous alkylaluminum/diisobutylaluminum chloride as the catalyst.
"YANG Xiao1,2, ZHANG Hua-qiang3, CONG Ri-xin3, DONG Jing3, ZHANG Chun-qing1, ZHANG Song-bo2, LIU Pi-bo2, HU Yan-ming2"
doaj   +1 more source

Synthesis and polymerization performance of a kind of dilithium initiator soluble in non-polar solvent

Hecheng xiangjiao gongye
Synthesis and polymerization performance of a kind of dilithium initiator soluble in non-polar solvent Abstract: A novel dilithium initiator soluble in non-polar solvent cyclopentane was prepared by the reaction of sec-butyl lithium and 2,6 ...
JING Meng-na1,2, DONG Jing2?鄢, ZHANG Ding-jun1
doaj   +1 more source

Synthesis of 6-Nitroderivatives of Oxazolo[3,2-a]-pyridines and Their Reactions with Nucleophiles

Molecules, 2003
5-Nitro-2-pyridone can be selectively N-phenacylated, and the resulting phenacylpyridones I undergo cyclization to 6-nitrooxazolo[3,2-a]pyridinium salts II.
Eugene V. Babaev, Alexander A. Bush
doaj   +1 more source

Polybutadiene modified clay and its nanocomposites [PDF]

, 2004
A butadiene-modified clay was prepared by ionic exchange between sodium montmorillonite and a butadiene surfactant; the butadiene surfactant was obtained from the reaction of vinylbenzyl chloride grafted polybutadiene with a tertiary amine ...
Jiang, David D., Su, Shengpei, Wilkie, Charles A.   +2 more
core   +1 more source

The number of transmission channels through a single-molecule junction

, 2010
We calculate transmission eigenvalue distributions for Pt-benzene-Pt and Pt-butadiene-Pt junctions using realistic state-of-the-art many-body techniques.
Agraït N., Bergfield J. P., Bergfield J. P., Bergfield J. P., Bergfield J. P., Bürki J., Castleton C. W. M., Charles A. Stafford, Cron R., Cruz M. T. d. M., Djukic D., Geskin V., Heurich J., Iwasa Y., Janousek B. K., Joshua D. Barr, Justin P. Bergfield, Kiguchi M., Kittel C., Kleber R., Koentopp M., Kroto H. W., Lichtenberger D. L., Lide D. R., Mikaya A. I., Morin C., Muralidharan B., Neaton J. B., Park H., Paulsson M., Saeys M., Scheer E., Solomon G. C., Stafford C. A., Thygesen K. S., Toher C., Valcarcel A., Yu L.   +37 more
core   +1 more source

Sampling Free Energy Surfaces as Slices by Combining Umbrella Sampling and Metadynamics [PDF]

, 2016
Metadynamics (MTD) is a very powerful technique to sample high-dimensional free energy landscapes, and due to its self-guiding property, the method has been successful in studying complex reactions and conformational changes.
Awasthi, Shalini, Kapil, Venkat, Nair, Nisanth N.   +2 more
core   +2 more sources