Results 111 to 120 of about 57,276 (400)
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
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
Modified polyurethane foams for fuel-fire Patent [PDF]
, 1970 Modification of polyurethanes with alkyl halide resins, inorganic salts, and encapsulated volatile and reactive halogen for fuel fire ...
Parker, J. A., Riccitiello, S. R.
core +1 more source
Experimental assessment of exposure to gaseous pollutants from mattresses and pillows while asleep [PDF]
, 2012 Every human spends 30% of his or her lifetime and about 70% of the time he or she is at home in their bed. Mattresses, pillows and bedlinnen are heavily treated with flame-retardants, detergents etc, substances that are known to have, next to a useful ...
Corsi, Richard +3 more
core +2 more sources
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
Solid-state Synthesis of 1-Ethoxycarbonyl-4-substituted-semicarbazides
Molecules, 2003 A rapid and simple method for the preparation of 1-ethoxycarbonyl-4-substituted-semicarbazides has been developed. As examples the reaction of six different isocyanates with ethyl carbazate under solvent-free conditions are reported.
Hedayat A. Taghizadeh +2 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
Isocyanate toughened pCBT: Reactive blending and tensile properties
eXPRESS Polymer Letters, 2013 Cyclic butylene terephthalate oligomers (CBT) were reacted in a ring-opening polymerization with three types of isocyanates: a bifunctional aromatic type, a bifunctional aliphatic type and a polymeric aromatic isocyanate.
T. Abt +3 more
doaj +1 more source