Results 191 to 200 of about 1,823 (242)

Comparison of blood concentrations of 1,3-butadiene and butadiene epoxides in mice and rats exposed to 1,3-butadiene by inhalation

Carcinogenesis, 1994
1,3-Butadiene (BD), an important commodity chemical used in the production of synthetic rubber, is carcinogenic in B6C3F1 mice and Sprague-Dawley rats, raising concern for potential carcinogenicity in humans. Mice are more sensitive than rats to the carcinogenic effects of BD.
M W, Himmelstein, M J, Turner, B, Asgharian, J A, Bond   +3 more
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Emulsion Polymerization of Butadiene

1990
The kinetics of the ab initio emulsion polymerization of butadiene was investigated using several emulsifiers and dissociative initiators. The steady polymerization rate in interval II was found to be highly insensitive to variations of the initiator concentration, suggesting a low initiator efficiency.
Weerts, P.A., Loos, van der, J.L.M., German, A.L.   +2 more
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Enzymatic Hydration of Butadiene Monoxide and Its Importance in the Metabolism of Butadiene

1982
1,3-Butadiene is a major industrial chemical used in the production of synthetic elastomers such as polybutadiene and styrene-butadiene rubber (SBR). Like most of the unsaturated olefins, butadiene is metabolized in vivo. The first step of its biotransformation is the cytochrome P-450-dependent epoxidation to butadiene monoxide (Malvoisin et al, 1979).
E, Malvoisin, M, Mercier, M, Roberfroid
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Copolymers of 1,3‐butadiene and 2,3‐dimethyl‐1,3‐butadiene

Journal of Polymer Science, 1949
AbstractSome experiments on the polymerization of 2,3‐dimethyl‐1,3‐butadiene and its copolymerization with butadiene are reported. This monomer requires very little modifier as compared to butadiene.
C. S. Marvel, Jack L. R. Williams
openaire   +1 more source

Atomistic models of amorphous polybutadienes. 2. Poly(1,4-trans-butadiene), poly(1,2-butadiene), and a random copolymer of 1,4-trans-butadiene, 1,4-cis-butadiene, and 1,2-butadiene

Macromolecules, 1993
Atomistic models of amorphous poly(1,4-trans-butadiene) and isotactic poly(1,2-butadiene) have been obtained at bulk density by carrying out molecular mechanics and molecular dynamics calculations under periodic boundary conditions, along the lines of the previous study of poly(1,4-cis-butadiene).
Eung-Gun Kim, Sanjay Misra, Wayne L. Mattice   +2 more
openaire   +1 more source

Stability of Butadiene

Rubber Chemistry and Technology, 1944
Abstract 1. The most prominent polymerization of pure butadiene in the absence of peroxides is dimerization. This reaction is thermally activated, and does not appear to be catalyzed by peroxides or by steel surfaces. 2. Butadiene is also capable of independent polymerization to high-molecular-weight polymer, but in the absence of peroxides ...
Richard F. Robey, Herbert K. Wiese, Charles E. Morrell   +2 more
openaire   +1 more source

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 ...
PRAGLIOLA, Stefania, MILANO, Giuseppe, GUERRA, Gaetano, LONGO, Pasquale   +3 more
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Cis-1,4-copolymerization of butadiene and 2-alkyl butadienes

Polymer Science U.S.S.R., 1987
A neodymium-containing catalytic system has been used to synthesize homopolymers of 2-alkyl butadienes-1,3 (A), where the alkyl is ethyl or isopropyl, and the copolymers of A with butadiene-1,3 (B) mostly containing (>95%) cis-1,4-units (1H and 13C NMR).
K.D. Skuratov, M.I. Lobach, A.S. Khachaturov, V.A. Kormer   +3 more
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The characteristic ratio of butadiene-styrene and butadiene-acrylonitrile copolymers

Collection of Czechoslovak Chemical Communications, 1983
A method advanced recently is used to estimate the characteristic ratio C∞ for statistical butadiene-styrene and butadiene-acrylonitrile copolymers from the reported data of the limiting viscosity number and sedimentation coefficient. The results are compared with those of the traditional methods.
Miloslav Bohdanecký, Vladimír Petrus
openaire   +1 more source

1,3-Butadiene

2001
[106-99-0] C4H6 (MW 54.09) InChI = 1S/C4H6/c1-3-4-2/h3-4H,1-2H2 InChIKey = KAKZBPTYRLMSJV-UHFFFAOYSA-N (co-monomer in synthetic elastomers and polymers, polybutadiene rubber, chloroprene, and nylon intermediate;1 4π partner in Diels–Alder reactions2) Alternate Names: butadiene; α,γ-butadiene; bivinyl; divinyl ...
Robert S. Coleman, Henry A. Alegria
openaire   +1 more source