Results 251 to 260 of about 92,840 (303)
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Species differences in the formation of butadiene monoxide from 1,3-butadiene
Archives of Toxicology, 1985When 1,3-butadiene is incubated with liver postmitochondrial fractions from mouse, rat, monkey or man and a NADPH-regenerating system, the formation rate of butadiene monoxide is different in the four species. With the exception of the rhesus monkey, the amount of epoxide is proportional to the monooxygenase activity.
U, Schmidt, E, Loeser
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Chemical Research in Toxicology, 1995
A new method was developed to quantify the levels of 1,3-butadiene (BD), butadiene monoxide (BDO), and butadiene diepoxide (BDO2) in blood. The method was based on vacuum distillation of tissues followed by analysis of the distillates using multidimensional GC/MS.
W E, Bechtold +3 more
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A new method was developed to quantify the levels of 1,3-butadiene (BD), butadiene monoxide (BDO), and butadiene diepoxide (BDO2) in blood. The method was based on vacuum distillation of tissues followed by analysis of the distillates using multidimensional GC/MS.
W E, Bechtold +3 more
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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 +3 more
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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 +3 more
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Emulsion Polymerization of Butadiene
1990The 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. +2 more
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Enzymatic Hydration of Butadiene Monoxide and Its Importance in the Metabolism of Butadiene
19821,3-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, 1949AbstractSome 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
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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 +2 more
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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 +2 more
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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 +2 more
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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 +2 more
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Cis-1,4-copolymerization of butadiene and 2-alkyl butadienes
Polymer Science U.S.S.R., 1987A 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 +3 more
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The characteristic ratio of butadiene-styrene and butadiene-acrylonitrile copolymers
Collection of Czechoslovak Chemical Communications, 1983A 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
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