Results 101 to 110 of about 113,972,106 (291)
Synthesis of Tetrachloro-Bisphenol A by Chlorination of Bisphenol A
The Journal of the Society of Chemical Industry, Japan, 1971 一般液相塩素化触媒を用い, 酢酸溶媒中で BPA の塩素化を行ない, 塩化アルミニウム触媒が最も適当な触媒と認めた。反応条件は BPA 仕込み濃度 10%, 触媒濃度 1% 以上, 反応温度 30～33℃ が適切であった。触媒の選択作用は強く, 無触媒とは異なった選択逐次反応で進行する。Cl2流速/BPA (l/min・mol) 0,25～0.60 の各実験における BPA の消失速度から擬一次反応の成立が確認され, その速度定数たと反応時間tの積τ と BPA,反応中間物の濃度の関係はほぼ同一曲線上にプロットされた。その曲線から, 試行錯誤により求められた各中間物の相対速度定数Kは, K2=k2/k1=1.3, K2=k3/k1=1.2, K4=k4/k1=1.8, K5=k5/k1=≒0 ...
Yoshiro SEKINE +2 more
openaire +2 more sources
Angewandte Chemie, EarlyView.Erneuerbare Guajacole werden durch Phenyliodid(III)diacetat rasch zu maskierten ortho‐Chinonen oxidiert und bilden eine neue Monomerklasse, die mit Multithiolen selektive Michael‐Typ‐Polyadditionen zu Polymeren mit Thiol‐Guajacol‐Verknüpfungen eingeht.
Dominik P. Hoch +7 more
wiley +1 more source
Comparison of the toxicokinetics of daidzein and bisphenol A in pregnant and non-pregnant DA/Han rats [PDF]
Potentially adverse human and environmental effects due to hormone mimicry of environmental estrogens are a matter of current concern. Environmental estrogens belong to the socalled endocrine active compounds (EAC) and may alter signalling processes of ...
Degen, Gisela H., Selinski, Silvia
core
Epigenetic Influences of Low-Dose Bisphenol a in Primary Human Breast Epithelial Cells
, 2011 Substantial evidence indicates that exposure to bisphenol A( BPA) during early development may increase breast cancer risk later in life. The changes may persist into puberty and adulthood, suggesting an epigenetic process being imposed in differentiated
Weng, Yu-I; Hsu, Pei-Yin; Liyanarachchi, Sandya; Liu, Joseph; Deatherage, Daniel E.; Huang, Yi-Wen; Zuo, Tao; Rodriguez, Benjamin; Lin, Ching-Hung; Cheng, Ann-Lii +1 more
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Bacteria-mediated bisphenol A degradation [PDF]
, 2013 Bisphenol A (BPA) is an important monomer in the manufacture of polycarbonate plastics, food cans, and other daily used chemicals. Daily and worldwide usage of BPA and BPA-contained products led to its ubiquitous distribution in water, sediment/soil, and
Yin, Kun, Chen, Lingxin, Zhang, Weiwei
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Angewandte Chemie International Edition, EarlyView.Renewable guaiacols are rapidly oxidized by phenyliodine(III)diacetate to masked ortho‐quinones, giving a new class of monomers that undergo selective Michael‐type polyaddition with multithiols to from thiol‐guaiacol connectivity‐bearing polymers. The activation applies to discrete monomers and directly to lignin, enabling two‐component adhesives that ...
Dominik P. Hoch +7 more
wiley +1 more source
BMC PediatricsThis study assessed bisphenol exposure in preterm infants (born before 35 weeks of gestation) hospitalized in a neonatal intensive care unit (NICU), along with associated prenatal exposure. Fifty-eight infants and 48 mothers were included.
Melda Celik +10 more
doaj +1 more source
, 2012 As the evidence of the toxic effects of bisphenol A (BPA) grows, its application in commercial products is gradually being replaced with other related compounds, such as bisphenol S (BPS). Nevertheless, very little is known about the occurrence of BPS in
Kannan, Kurunthachalam +2 more
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Glyoxylic‐Acetal‐Based Gel‐Polymer Electrolytes for Lithium‐Ion Batteries
Batteries &Supercaps, Volume 8, Issue 3, March 2025.A safe electrolyte based on tetraethoxyglyoxal (LE) is combined with a methacrylate polymer matrix. The resulting gel‐polymer electrolyte (GPE) exhibits an increased flash point, suitable ionic conductivity, and a stable performance in lithium‐ion battery cells.
Christian Leibing +4 more
wiley +1 more source
Spectrophotometric Determination by Azo Coupling Reaction of Bisphenol A Using Benzidine Reagent
Proceedings of the International Conference on Applied Innovations in ITNew spectrophotometric method for Bisphenol A determination has been developed according to the current study. A colored complex called Bisphenol A can be obtained through the combination of benzidine in an alkaline solution.
Abrar Ali Hussein, Iqbal Salman Mohammed
doaj +1 more source