نتایج جستجو برای: isocyanates

تعداد نتایج: 1001  

2010
Shou-Heng Deng Feng-Jun Cao Xiao-Jun Cai Fang Li Ping Chen

In the title compound, C(22)H(17)N(3)O(5), synthesized via the aza-Wittig reaction of ethyl 3-(phenyl-imino-methyl-ene-amino)-benzofuran-2-carboxyl-ate, benzene isocyanate and diethyl 2-amino-succinate, the imidazo[1,2-a]benzo[4,5]furo[2,3-d]pyrim-idine ring system is essentially planar (r.m.s. deviation for all 16 non-H atoms = 0.020 Å). The phenyl ring is twisted with respect to this ring sys...

2010
Ting Sun Gong-Chun Li Jing Li Feng-Ling Yang

The title compound, C(14)H(12)N(4)O(4), was prepared by the reaction of 2-nitro-phenyl isocyanate with benzoyl-hydrazine. The dihedral angle between the rings is 71.49 (6)) Å. The mol-ecular conformation is stabilized by an intra-molecular N-H⋯O hydrogen bond, generating an S(6) ring. The crystal packing shows N-H⋯O hydrogen bonds.

Journal: :British journal of industrial medicine 1990
D Anderson S Goyle B J Phillips A Tee L Beech W H Butler

Since the disaster in Bhopal, India, people exposed to methyl isocyanate (MIC) have complained of various disorders including neuromuscular dysfunction. In an attempt to get information about such dysfunction we have previously shown that MIC can affect muscle cells in culture. The present communication reports investigations into the effect of MIC on brain cells in culture. MIC was toxic to br...

Journal: :Journal of Occupational and Environmental Hygiene 2018

Journal: :Journal of Renewable Materials 2021

Soy-protein isolate (SPI) was used to prepare non-isocyanate polyurethane (NIPU) thermosetting adhesives for wood panels by reacting it with dimethyl carbonate (DMC) and hexamethylene diamine. Both linear as well branched oligomers were obtained identified, indicating how such oligomer structures could further cross-link form a hardened network. Unusual observed, namely carbamic acid-derived ur...

Journal: :Nanoscale 2012
Hiroshi Yao Noriyuki Kitaoka Akito Sasaki

Versatile functionalization of metal clusters is a key step in understanding the reactivity of protective monolayers. We here demonstrate that reaction of the outermost amino groups on (S)-/(R)-penicillamine-protected gold clusters with ethyl isocyanate readily modifies the chiral surface structure through carbamoylation. Interestingly, the clusters are electrophoretically separated by the size...

Journal: :Journal of the American Chemical Society 2002
David M Jenkins Theodore A Betley Jonas C Peters

The synthesis of the first terminal imido complex of cobalt, [PhBP3]CoN-p-tolyl, is reported. Its synthesis proceeds by oxidative group transfer from cobalt(I) upon addition of tolyl azide at room temperature. This species and a related eta1-diazoalkane adduct have been structurally characterized. The diamagnetic imido complex [PhBP3]CoN-p-tolyl reacts with CO to liberate isocyanate and the cob...

Journal: :Langmuir : the ACS journal of surfaces and colloids 2014
Ingmar Polenz Sujit S Datta David A Weitz

We use microfluidics to continuously produce monodisperse polyurea microcapsules (PUMCs) having either aqueous or nonaqueous cores. The microcapsule shells are formed by the reaction between an isocyanate, dissolved in oil, and an amine, dissolved in water, at the surface of oil-in-water or water-in-oil drops immediately as they are formed. Different microcapsule morphologies can be generated u...

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