Results 21 to 30 of about 33,147 (342)

Isocyanate emissions from pyrolysis of mattresses containing polyurethane foam [PDF]

open access: yes, 2017
This study examined the emissions of powerful asthmatic agents called isocyanates from small-scale pyrolysis experiments of two common foams employed in mattress production such as flexible polyurethane foam (FPUF) and viscoelastic memory foam (VMF).
Conesa, Juan A.   +4 more
core   +2 more sources

Synthesis of 3-Trifluoromethyl-5,6-dihydro-[1,2,4]triazolo Pyrazine Derivatives and Their Anti-Cancer Studies

open access: yesMolbank, 2020
The synthesis of a wide variety of 3-trifluoromethyl-5,6-dihydro-[1,2,4]triazolo pyrazine derivatives, by the treatment of 3-trifluoromethyl-5,6,7,8-tetrahydro-[1,2,4]triazolo[4,3-α]pyrazine hydrochloride with an array of isocyanates in the presence of ...
Rajaiah Raveesha   +2 more
doaj   +1 more source

PECULIARITIES OF ISOCYANATES INTERACTION WITH HYDRAZINE DERIVATIVES

open access: yesТонкие химические технологии, 2018
The results of studies on chemical transformations of organic and organosilicon isocyanates in their interaction with hydrazine derivatives have been summarized in this review.
A. D. Kirilin   +4 more
doaj   +1 more source

Synthesis and research of polyfunctional silylureas used in electric deposition of tin-indium alloy

open access: yesChimica Techno Acta, 2021
Polyfunctional silylureas were synthesized by the interaction of 3-aminopropyltriethoxysilane with isocyanates of various structures in an inert aromatic solvent.
K. Yu. Ivanova   +5 more
doaj   +1 more source

Nanoencapsulation of blocked isocyanates through aqueous emulsion polymerization

open access: yeseXPRESS Polymer Letters, 2008
Blocked isocyanates were successfully encapsulated into polystyrene and hydroxyl and amine functionalized polymeric nanospheres via emulsion polymerization.
doaj   +1 more source

Characterization of Metal Nanoparticles/Polyurethane Foams for Practical Applications

open access: yesProceedings, 2023
Polyurethane foam can generally be defined as an expanded cellular product produced by the interaction of active compounds with hydrogen, water and isocyanates [...]
Toma Fistos   +8 more
doaj   +1 more source

One-pot sequential synthesis of isocyanates and urea derivatives via a microwave-assisted Staudinger–aza-Wittig reaction

open access: yesBeilstein Journal of Organic Chemistry, 2013
A fast and efficient protocol for the synthesis of N,N'-disubstituted urea derivatives from alkyl halides and primary or secondary amines has been developed.
Diego Carnaroglio   +5 more
doaj   +1 more source

Prevalence of respiratory symptoms in automobile spray painters of Mumbai: A cross-sectional study

open access: yesIndian Journal of Allergy Asthma and Immunology, 2018
Background: Spray painting poses health hazards that affect the respiratory system. During spray painting, workers are exposed to different paint components.
Shweta Kishor Nahar, Mohd Adil Ashraf
doaj   +1 more source

Investigations of catalysis of urethane formation using organotin dicarboxylate

open access: yesHeliyon, 2020
The reaction mechanism of the urethane formation for both aliphatic and aromatic isocyanates in the presence of organotin dicarboxylate as a catalyst is investigated theoretically and experimentally.
Ransi Devendra   +2 more
doaj   +1 more source

CO2 conversion to phenyl isocyanates by uranium(vi) bis(imido) complexes. [PDF]

open access: yes, 2020
Uranium(vi) trans-bis(imido) complexes [U(κ4-{(tBu2ArO)2Me2-cyclam})(NPh)(NPhR)] react with CO2 to eliminate phenyl isocyanates and afford uranium(vi) trans-[O[double bond, length as m-dash]U[double bond, length as m-dash]NR]2+ complexes, including [U(κ4-
Bandeira, Nuno AG   +4 more
core   +1 more source

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