Results 71 to 80 of about 20,442 (252)
Research of isocyanate mass transfer
Тонкие химические технологии, 2009 In work process of toluilene-isocyanate mass transfer being a component of glues on a polyurethane basis in a bivinyl-styrene thermoplastic elastomer and action mechanism toluilene-isocyanate of at formation of adhesive contact are ...
D. A. Kozulin +2 more
doaj
Macromolecular Rapid Communications, Volume 44, Issue 1, January 2023., 2023 Mild thermal degradation at atmospheric pressure interfaced with ion mobility separation and tandem mass spectrometry analysis offers a fast and sensitive method for the comprehensive characterization of multicomponent industrial elastomers including thermoplastic polyurethanes and rubber copolymers.
Nadrah Alawani +2 more
wiley +1 more source
Double and triple ionization of isocyanic acid [PDF]
arXiv, 2019 Double and triple ionization spectra of isocyanic acid have been measured using multi-electron and ion coincidence techniques combined with synchrotron radiation and compared with high-level theoretical calculations. Vertical double ionization at an energy of 32.8+/-0.3 eV forms the 3A'' ground state in which the HNCO2+ ion is long-lived.
arxiv
Rapid Determination of Residues and Migration of Seven Isocyanate Compounds in Food Composite Packaging Bags by Ultra-high Performance Convergence Chromatography [PDF]
Shipin KexueAn ultra-high performance convergence chromatography (UPC2) method was developed to rapidly determine the residues and migration of seven isocyanate compounds in food composite packaging bags.
QIU Yue, LI Genrong, YU Qiuling, TAN Chaolan, LU Jiali, ZHANG Qing
doaj +1 more source
An IR study of pure and ion irradiated frozen formamide [PDF]
, 2006 Context. The chemical evolution of formamide (HCONH2), a molecule of astrobiological interest that has been tentatively identified in interstellar ices and in cometary coma, has been studied in laboratory under simulated astrophysical conditions such as ion irradiation at low temperature. Aims.
arxiv +1 more source
Angewandte Chemie International Edition, Accepted Article.This study presents a phosgene‐ and isocyanate‐free route for the synthesis of polyurethanes using (R)‐limonene as a bio‐based starting material. The synthesis of the cyclic limonene‐based carbamate monomer LU is achieved in high yields using dimethyl carbonate as a sustainable, less hazardous phosgene surrogate and is verified by NMR, SC‐XRD, ESI‐MS ...
Jonas Futter +4 more
wiley +1 more source
Frontiers in Medicine, 2019 Introduction: Di-isocyanates TDI (toluene di-isocyanate), MDI (diphenylmethane di-isocyanate), and HDI (hexamethylene di-isocyanate) are the most common chemicals causing occupational asthma. Di-isocyanate inhalation has been reported to induce oxidative
Jussi Leppilahti +8 more
doaj +1 more source
HNCO enhancement by shocks in the L1157 molecular outflow [PDF]
, 2010 The isocyanic acid (HNCO) presents an extended distribution in the centers of the Milky Way and the spiral galaxy IC342. Based on the morphology of the emission and the HNCO abundance with respect to H2, several authors made the hypothesis that HNCO could be a good tracer of interstellar shocks.
arxiv +1 more source
Visible‐light‐switchable azobenzenes: Molecular design, supramolecular systems, and applications
Natural Sciences, Volume 3, Issue 1, January 2023., 2023 Abstract Photocontrol of functional molecules and supramolecular systems provides promising directions for the development of innovative materials and technologies. Reversible photoswitches that can isomerize among different states play a vital role in such photoresponsive systems. However, the commonly used UV light for triggering the isomerization of
Minghao Gao +3 more
wiley +1 more source
Oscillatory thermal instability and the Bhopal disaster [PDF]
arXiv, 2010 A stability analysis is presented of the hydrolysis of methyl isocyanate (MIC) using a homogeneous flow reactor paradigm. The results simulate the thermal runaway that occurred inside the storage tank of MIC at the Bhopal Union Carbide plant in December 1984. The stability properties of the model indicate that the thermal runaway may have been due to a
arxiv