Results 41 to 50 of about 33,147 (342)
Polímeros, 1998 Este estudo descreve uma série de reações envolvendo os grupos isocianatos (NCO) e os grupos hidroxílicos do acetato de celulose com grau de substituição (DS) igual a 2,4.
Vagner R. Botaro, Alessandro Gandini
doaj +1 more source
Novel Functional Materials via 3D Printing by Vat Photopolymerization
Advanced Functional Materials, EarlyView.This Perspective systematically analyzes strategies for incorporating functionalities into 3D‐printed materials via Vat Photopolymerization (VP). It explores the spectrum of achievable functionalities in recently reported novel materials—such as conductive, energy‐storing, biodegradable, stimuli‐responsive, self‐healing, shape‐memory, biomaterials, and
Sergey S. Nechausov +3 more
wiley +1 more source
Iron(II) catalyzed hydrophosphination of isocyanates [PDF]
, 2017 The first transition metal catalyzed hydrophosphination of isocyanates is presented. The use of low-coordinate iron(II) precatalysts leads to an unprecedented catalytic double insertion of isocyanates into the P-H bond of diphenylphosphine to yield ...
Blake, Alexander J. +4 more
core +3 more sources
Advanced Functional Materials, EarlyView.This work introduces UV‐curable poly(thio)urethane (PSU) thermosets as 4D printable scaffolds responsive to oxidative stress. PSU networks with 100 wt.% polypropylene glycol (PPG) effectively suppress inflammatory markers in microglial cells to basal values.
Xabier Lopez de Pariza +10 more
wiley +1 more source
The wheat straw lignin as renewable polyol for polyurethanes elastomers [PDF]
, 2012 The novel wheat straw) produced on CIMV pilot plant (France) was sequential extracted with organic solvents of different polarity (dichloromethane, methanol and dichloromethane/methanol mixture.
Arshanitsa, Alexandr +3 more
core
Synthesis of N-Z, N′-Formyl α-Amino Acid Derived Gem-Diamines [PDF]
, 2008 A variety of N-carbobenzoxy, N′-formyl gem-diaminoalkyl derivatives have been obtained through Goldsmith-Wick reaction of Z-α-amino acid/peptide acid derived isocyanates with 96% HCOOH in presence of 4-dimethylaminopyridine (DMAP) as catalyst.
Narendra, N., Sureshbabu, V.V.
core +2 more sources
Biological Monitoring for Isocyanates [PDF]
The Annals of Occupational Hygiene, 2007 Isocyanates are reactive chemicals and thousands of workers may be exposed to them during their manufacture and use in a wide range of products. They are classed as sensitizers and are a major cause of occupational asthma in the UK. Workplace exposure limits are low and control of exposure often depends on personal respiratory protection.
openaire +2 more sources
Sakarya Üniversitesi Fen Bilimleri Enstitüsü DergisiNew bis (thiosemicarbazone) derivatives (1-5) were obtained from thiophene-2,5-dicarbaldehyde and numerous thiosemicarbazides. The thiosemicarbazides were prepared various isothiocyanates and hydrazine monohydrate.
Halit Muğlu, Hasan Yakan
doaj +1 more source
Beilstein Journal of Organic Chemistry, 2015 The two isomeric bis(isocyanates) 4,12- and 4,16-di-isocyanato[2.2]paracyclophane, 16 and 28, have been prepared from their corresponding diacids by simple routes.
Henning Hopf +2 more
doaj +1 more source
Stimuli‐Responsive Afterglow from Luminescent Liquid Crystal Elastomers
Advanced Materials, EarlyView.An active glow luminescent system for encoding, signaling, and tracking in dark environments has been developed by integrating inorganic ultralong afterglow phosphors with adaptive liquid crystal elastomer actuators. Abstract Stimuli‐responsive luminescent polymeric materials which combine afterglow emission with mechanical flexibility and adaptability
Lansong Yue +2 more
wiley +1 more source