Results 241 to 250 of about 92,840 (303)

Tribological Performance of Grease-Coated Rubber in High-Pressure Hydrogen Storage Applications. [PDF]

Polymers (Basel)
Ye S, Zhi H, Wu W, Yasin S, Gu C, Shi J, Zeng S.   +6 more
europepmc   +1 more source

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Stereoselective Cyclopropanation by Cyclocopolymerization of Butadiene

Journal of the American Chemical Society, 2002
An unprecedented cyclopropanation by cyclopolymerization reaction is presented. In particular, catalytic copolymerization processes of ethene and butadiene lead with high trans selectivity to a complete cyclocopolymerization of butadiene units. Ethene-based copolymers including cyclopropane and cyclopentane rings, which can be relevant to polyolefin ...
Stefania Pragliola, Gaetano Guerra, Pasquale Longo   +2 more
exaly   +4 more sources

Mutagenicity of butadiene and butadiene monoxide

Biochemical and Biophysical Research Communications, 1978
Abstract Incubation of S. typhimurium strains TA1530 and TA1535 in the presence of gaseous butadiene increased the number of his+ revertants/plate. This mutagenic effect occured in absence of fortified S-9 rat liver fraction. In its presence, the mutagenic effect seemed to be dependent on its composition. With butadiene monoxide, a reversion to
C, de Meester, F, Poncelet, M, Roberfroid, M, Mercier   +3 more
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The reactivity of 1,3-butadiene with butadiene-derived popcorn polymer

Journal of Hazardous Materials, 2004
Adiabatic calorimetry performed on butadiene-derived popcorn polymer samples from industrial facilities has revealed exothermic behavior accompanied by non-condensible gas production, indicative of possible decomposition, at elevated temperatures. In the presence of low concentrations of 1,3-butadiene, reactivity is observed at temperatures of 60-70 ...
M E, Levin, A D, Hill, L W, Zimmerman, T E, Paxson   +3 more
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The microstructure of butadiene unit in the copolymer of butadiene with styrene

European Polymer Journal, 1983
Abstract Copolymerization of butadiene with styrene and diad analysis of the copolymers by 13 C-NMR were attempted to obtain information on the penultimate unit effect on the microstructure of the butadiene unit. As catalyst, Ni(acac) 2 , Ni(benzoate) 2 and Co(acac) 3 were used together with Et 1.5 AlCl 1.5 .
E. Kobayashi, J. Furukawa, M. Ochiai, T. Tsujimoto   +3 more
openaire   +1 more source

Butadiene and Heterodienes Revisited

The Journal of Organic Chemistry, 2018
Surprising features in a recently published high-level calculation of the rotational profile of butadiene led us to compare butadiene with a set of 17 heterodienes. The rotational profiles for this large group of compounds varied widely, thereby possessing a high information content. These data were subjected to a Fourier analysis yielding 1- through 6-
Kenneth B. Wiberg, Paul R. Rablen, Joshua H. Baraban   +2 more
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Macromolecular adducts of butadiene

Toxicology, 1996
Butadiene (BD) is an important industrial chemical classified as a probable human carcinogen. Marked species differences in susceptibility to the carcinogenic effects of BD have been observed, possibly due to the differences in its metabolism. In this work, guanine and adenine adducts formed by the reactive metabolites of BD in vitro were isolated and ...
, Tretyakova NYu, Y P, Lin, P B, Upton, R, Sangaiah, J A, Swenberg   +4 more
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Low frequency vibrations of 1,3-butadiene, 1,3-butadiene-d4, and 1,3-butadiene-d6

Journal of Molecular Spectroscopy, 1973
Abstract The absorption bands in the far infrared due to the torsional and in-plane skeletal bending vibrations have been examined in detail together with some mid-infrared bands. Torsional energy level spacings up to v 13 = 5 for butadiene and up to v 13 = 4 and 3, respectively, for the d 4 - and d 6 -compounds have been measured ...
A.R.H. Cole, A.A. Green, G.A. Osborne
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Cationic polymerization of butadiene and copolymerization of butadiene and styrene

Journal of Polymer Science, 1951
Abstract The cationic polymerization of butadiene with several Friedel‐Crafts catalysts has been described. Aluminum chloride and chlorosulfonic acid are active catalysts at −75°. The rate of polymerization at −75° is much faster than at the higher temperatures.
C. S. Marvel, R. Gilkey, C. R. Morgan, J. F. Noth, R. D. Rands, Charles H. Young   +5 more
openaire   +1 more source