Effects-driven chemical design: the acute toxicity of CO<sub>2</sub>-triggered switchable surfactants to rainbow trout can be predicted from octanol-water partition coefficients
作者:Troy Arthur、Jitendra R. Harjani、Lam Phan、Philip G. Jessop、Peter V. Hodson
DOI:10.1039/c1gc15620a
日期:——
efficiency, CO2-triggered switchable surfactants have been developed to change surface activity and solubility upon command. Surfactant activity is turned on by introduction of one atmosphere of CO2 and reversed by purging with air or nitrogen. These surfactants have numerous potential industrial applications related to their ability to stabilize and destabilize emulsions upon command. To assess their
Superbase catalysis of oxazolidin-2-one ring formation from carbon dioxide and prop-2-yn-1-amines under homogeneous or heterogenous conditions
作者:Mirco Costa、Gian Paolo Chiusoli、Davide Taffurelli、Giulio Dalmonego
DOI:10.1039/a800453f
日期:——
N-alkyl-substituted prop-2-yn-1-amines and N-tri-, tetra- and penta-alkyl-substituted guanidines or other strong organic bases assemble under the action of carbon dioxide to afford carbamates, from which methyleneoxazolidinones 2 are formed by ring closure. If alkyl or cycloalkyl chains of appropriate length are present in the guanidines the reaction readily occurs under heterogenous conditions without
Efficient CO<sub>2</sub> capture by tertiary amine-functionalized ionic liquids through Li<sup>+</sup>-stabilized zwitterionic adduct formation
作者:Zhen-Zhen Yang、Liang-Nian He
DOI:10.3762/bjoc.10.204
日期:——
through formation of zwitterionic adducts, combining synthetic strategies to ionic liquids (ILs) and coordination. The essence of our strategy is to make use of multidentate cationcoordination between Li(+) and an organic base. Also PEG-functionalized organic bases were employed to enhance the CO2-philicity. The ILs were reacted with CO2 to form the zwitterionic adduct. Coordination effects between various
通过形成两性离子加合物,将合成策略与离子液体 (IL) 和配位相结合,实现了高效的 CO2 吸收。我们策略的本质是利用 Li(+) 和有机碱之间的多齿阳离子配位。还采用了 PEG 功能化的有机碱来增强 CO2 亲和性。ILs 与 CO2 反应形成两性离子加合物。研究了各种锂盐和中性配体之间的配位效应,以及所获得的螯合离子液体的 CO2 容量。例如,PEG150MeBu2N 的 CO2 容量从 0.10 稳步增加到 0.66(每摩尔碱吸收的 mol CO2),这是通过形成由 Li(+) 稳定的两性离子加合物。
METHOD FOR COATING A TIN-FREE SILICON COMPOSITION ON A FLEXIBLE MEDIUM
申请人:Maliverney Christian
公开号:US20120164335A1
公开(公告)日:2012-06-28
A method is described for coating a flexible medium made from fabric, paper, polyvinyl chloride, polyester, polypropylene or polyethylene terephthalate with a tin-free elastomer silicon composition that can be cross-linked by polycondensation.
SILICONE COMPOSITION SUITABLE FOR CROSS-LINKING BY DEHYDROCONDENSATION IN THE PRESENCE OF A NON-METAL CATALYST
申请人:Maliverney Christian
公开号:US20120172471A1
公开(公告)日:2012-07-05
A silicone composition is described that includes components having SiH/SiOH groupings and that can be polymerized/cross-linked by a dehydrocondensation reaction in the presence of a non-metal catalyst such as non-silylated, pentasubstituted guanidine, requiring a low activation temperature.