Results 11 to 20 of about 48,553 (267)

Molecular Simulations of VaporLiquid Equilibrium of Isocyanates

open access: yes, 2021
The wide range of applications of the isocyanates across multiple industries sparks the interest in the study of their phase behavior. A molecular simulation is a powerful tool that can go beyond experimental investigations relying on a molecular ...
Alina Emelianova   +3 more
core   +3 more sources

Iron(II)-catalyzed hydroamination of isocyanates [PDF]

open access: yes, 2019
A two-coordinate Fe(II) m-terphenyl complex acts as a precatalyst for the hydroamination of isocyanates, affording urea and biuret derivatives, with product selectivity accomplished via modification of the reaction conditions.
South, Amy J.   +6 more
core   +2 more sources

Determination of airborne isocyanates [PDF]

open access: yes, 2007
Isocyanates are important in industrial hygiene and workplace monitoring. Owing to their severe acute toxicity and sensitizing properties, analytical methods with high sampling efficiency and sensitivity in the low ppb to ppt range are required.
Henneken, H., Karst, U., Vogel, M.
core   +1 more source

A Practical Approach to Semicarbazone and Hydrazone Derivatives via Imino-isocyanates [PDF]

open access: yes, 2014
Isocyanates have a broad spectrum of uses and they are used in the production of many products including polyurethane polymers, coatings, adhesives, paints and foams.
Garland, Keira
core   +1 more source

Novel bio-based epoxy-polyurethane materials from modified vegetable oils – synthesis and characterization

open access: yeseXPRESS Polymer Letters, 2017
Presented research shows the results of a study on mechanical properties of materials obtained in the course of innovatory application of epoxidized vegetable oil in the synthesis of new bio-based epoxy resins, crosslinked with curing agents which are ...
A. Sienkiewicz, P. Czub
doaj   +1 more source

Occupational exposure to selected isocyanates in Polish industry

open access: yesMedycyna Pracy, 2015
Background: Isocyanates constitute a group of highly reactive, low molecular weight chemicals used worldwide for polyurethane manufacturing. The occupational exposure to these compounds is a major cause of occupational asthma, thus it is very important ...
Sławomir Brzeźnicki   +1 more
doaj   +1 more source

Spirometric measurement among polyurethane foam mattress-making workers of India

open access: yesIndian Journal of Community Medicine, 2021
Background: The polyurethane foam (PUF) mattress-making workers are exposed to isocyanates which are known respiratory toxicants and cause effect on pulmonary volumes and flows.
Rajnarayan Ramshankar Tiwari   +1 more
doaj   +1 more source

Occupational allergic contact dermatitis caused by isocyanates

open access: yes, 2002
Between 1978 and 2001, 22 patients were diagnosed with occupation-related allergic contact dermatitis from isocyanates and/or polyurethanes in our clinic .
Bruze, Magnus,   +3 more
core   +2 more sources

A versatile way for the synthesis of monomethylamines by reduction of N-substituted carbonylimidazoles with the NaBH4/I2 system

open access: yesBeilstein Journal of Organic Chemistry, 2022
An economical and versatile protocol for the one-pot synthesis of monomethylamines by reduction of N-substituted carbonylimidazoles with NaBH4/I2 in THF at reflux temperature is described. This method used no special catalyst and various monomethylamines
Lin Chen   +5 more
doaj   +1 more source

Green Polyurethanes from Renewable Isocyanates and Biobased White Dextrins

open access: yesPolymers, 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

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