Results 21 to 30 of about 57,276 (400)
Residual Isocyanates in Medical Devices and Products: A Qualitative and Quantitative Assessment
Environmental Health Insights, 2016 We conducted a pilot qualitative and quantitative assessment of residual isocyanates and their potential initial exposures in neonates, as little is known about their contact effect.
Gillian Franklin +8 more
doaj +1 more source
Frontiers in Chemistry, 2019 Using isocyanate-functionalized Kraft lignin as a reactive macromonomer for the preparation of polyurethane foams by a prepolymer technique is a well-known strategy to incorporate the biomacromolecule into a higher value polymer material.
Mareike Zieglowski +9 more
doaj +1 more source
Journal of Occupational Medicine and Toxicology, 2011 Background Isocyanates are some of the leading occupational causes of respiratory disorders, predominantly asthma. Adequate exposure monitoring may recognize risk factors and help to prevent the onset or aggravation of these aliments.
Lemiere Catherine +4 more
doaj +1 more source
Frontiers in Genetics, 2021 Isocyanates are respiratory and skin sensitizers that are one of the main causes of occupational asthma globally. Genetic and epigenetic markers are associated with isocyanate-induced asthma and, before asthma develops, we have shown that genetic ...
Laura W. Taylor +3 more
doaj +1 more source
Isocyanic acid (HNCO) in the Hot Molecular Core G331.512-0.103: Observations and Chemical Modelling [PDF]
, 2021 Isocyanic acid (HNCO) is a simple molecule with a potential to form prebiotic and complex organic species. Using a spectral survey collected with the Atacama Pathfinder EXperiment (APEX), in this work we report the detection of 42 transitions of HNCO in the hot molecular core/outflow G331.512-0.103 (hereafter G331).
arxiv +1 more source
Journal of the American Chemical Society, 2019 A Cu-catalyzed borylative carboxamidation reaction has been developed using vinylarenes and isocyanates. Alkynes, branched 1,3-dienes and bicyclic alkenes were also found to be competent coupling partners.
Daniele Fiorito +3 more
semanticscholar +1 more source
The ALMA-PILS survey: Detection of CH$_{3}$NCO toward the low-mass protostar IRAS 16293-2422 and laboratory constraints on its formation [PDF]
Mon. Not. R. Astron. Soc. 469 (2017) 2219-2229, 2017 Methyl isocyanate (CH$_{3}$NCO) belongs to a select group of interstellar molecules considered to be relevant precursors in the formation of larger organic compounds, including those with peptide bonds. The molecule has only been detected in a couple of high-mass protostars and potentially on comets.
arxiv +1 more source
Thermal curing of an epoxy-anhydride system modified with hyperbranched poly(ethylene imine)s with different terminal groups [PDF]
, 2017 New hyperbranched polymers (HBP) have been synthesized by reaction of a poly(ethylene imine) with phenyl and t-butyl isocyanates. These HBPs have been characterized by 1H-NMR (nuclear magnetic resonance of hydrogen) and Fourier transform infrared ...
Acebo Gorostiza, Cristina +5 more
core +2 more sources
Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins
Polymers, 2019 Polyurethanes (PUs) are an important class of polymers due to their low density and thermal conductivity combined with their interesting mechanical properties—they are extensively used as thermal and sound insulators, as well as structural and comfort ...
J. Konieczny, K. Loos
semanticscholar +1 more source
ChemCatChem, Volume 15, Issue 1, January 9, 2023., 2023 Carbocatalysis: The synthesized basic carbocatalyst showed high performance in two different base‐catalyzed reactions namely ϵ‐caprolactone ring‐opening polymerization to biodegradable polycaprolactone, as well as isosorbide transesterification to isosorbide bis(methyl carbonate).
Majd Al‐Naji +3 more
wiley +1 more source