Results 1 to 10 of about 20,442 (252)

Copper-catalyzed reaction of aziridine for the synthesis of substituted imidazolidine and imidazolidinone

Frontiers in Chemistry, 2023
Herein we report a copper-catalyzed synthesis of imidazolidine by employing the reaction of aziridine with imine. The reaction smoothly provided a diverse range of 2-substituted imidazolidines with high compatibility with various functional groups ...
Kota Hashimoto, Daiki Higuchi, Satoshi Matsubara, Kei Murakami, Kei Murakami   +4 more
doaj   +1 more source

A Novel Synthetic Approach of Functionalised GO and CNT to Nanocomposite Containing Active Nanostructured Fillers for Classical Isocyanate Curing

Chemistry Proceedings, 2021
A novel synthetic method has been developed by utilizing the chemical reactivity of functionalized graphene and CNT with a covalent combination of chemically diverse GO/FCNT and toluene diisocyanate, thereby yielding a synergistic polymer nanocomposite ...
Lina Jadhav, Rahul Patil, Nikhil Borane, Satyendra Mishra, Ganapati D. Yadav, Dipak B. Patil, Vikas Patil   +6 more
doaj   +1 more source

Reduced Isocyanate Release Using a Waterproof, Resin-Based Cast Alternative Relative to Fiberglass Casts

Toxics, 2023
The effects of occupational isocyanate exposure range from asthma and contact dermatitis to neurotoxicity and cancer. Respiratory sensitization due to orthopedic cast application has been well documented. This study aims to compare the safety of standard-
Kristen Stefanescu, Claire L. Timlin, Ashley S. Moy, Grzegorz Zapotoczny   +3 more
doaj   +1 more source

Cylindrical IR-ATR Sensors for Process Analytics

Sensors, 2020
Infrared attenuated total reflection (ATR) spectroscopy is a common laboratory technique for the analysis of highly absorbing liquids and solids. However, in a process environment, maintaining a sufficient sample exchange and cleaning of the sensitive ...
Armin Lambrecht, Carsten Bolwien, Jochen Erb, Hendrik Fuhr, Gerd Sulz   +4 more
doaj   +1 more source

A Review of the Surface Modification of Cellulose and Nanocellulose Using Aliphatic and Aromatic Mono- and Di-Isocyanates

Molecules, 2019
Nanocellulose has been subjected to a wide range of chemical modifications towards increasing its potential in certain fields of interest. These modifications either modulated the chemistry of the nanocellulose itself or introduced certain functional ...
Hatem Abushammala, Jia Mao
doaj   +1 more source

Study of the catalytic selectivity of an aqueous two-component polyurethane system by ftir spectroscopy [PDF]

Hemijska Industrija, 2003
The difficulty in formulating a two component waterborne polyurethane, is the isocyanate-water side reaction, which can lead to gassing/foaming, loss of isocyanate functionality, low gloss and a reduced pot life.
Stamenković Jakov V., Cakić Suzana M., Nikolić Goran S.   +2 more
doaj   +1 more source

Synthesis and Structural Characterization of Amidine, Amide, Urea and Isocyanate Derivatives of the Amino-closo-dodecaborate Anion [B₁₂H₁₁NH₃]⁻

Molecules, 2018
The synthesis and structural characterization of new derivatives of [B12H12]2− is of fundamental interest and is expected to allow for extended applications.
Yuanbin Zhang, Yuji Sun, Tao Wang, Jiyong Liu, Bernhard Spingler, Simon Duttwyler   +5 more
doaj   +1 more source

Paving the Way towards Sustainability of Polyurethanes: Synthesis and Properties of Terpene-Based Diisocyanate

Molecules, 2023
Due to growing concerns about environmental issues and the decline of petroleum-based resources, the synthesis of new biobased compounds for the polymer industry has become a prominent and timely topic.
Aliénor Delavarde, Sebastien Lemouzy, Aurélien Lebrun, Julien Pinaud, Sylvain Caillol   +4 more
doaj   +1 more source

Synthesis and Properties of 1,3-Disubstituted Ureas Containing (Adamantan-1-yl)(phenyl)methyl Fragment Based on One-Pot Direct Adamantane Moiety Inclusion

Molecules, 2023
A one-stage method for the preparation of 1-[isocyanato(phenyl)methyl]adamantane containing a phenylmethylene fragment located between the adamantane fragment and the isocyanate group, and 1-[isocyanato(phenyl)methyl]-3,5-dimethyladamantane with ...
Vladimir D’yachenko, Dmitry Danilov, Yaroslav Kuznetsov, Semyon Moiseev, Vladimir Mokhov, Vladimir Burmistrov, Gennady Butov   +6 more
doaj   +1 more source

Synthesis, enzyme inhibition and anticancer investigation of unsymmetrical 1,3-disubstituted ureas [PDF]

Journal of the Serbian Chemical Society, 2014
In this research work seventeen urea derivatives, including five new derivatives N-mesityl-N'-(3-methylphenyl)urea (2), N-(3-methoxyphenyl)-N'-(3-methylphenyl)urea (4), N-mesityl-N'-(4-methylphenyl)urea (6), N-(1,3-benzothiazol-2-yl)-N'-(3 ...
Mustafa Sana, Perveen Shahnaz, Khan Ajmal   +2 more
doaj   +1 more source