Chemical Analysis of 2,4-Toluene Diisocyanate, 1,6-Hexamethylene Diisocyanate, and Isophorone Diisocyanate in Petrolatum Patch-Test Preparations

Dermatitis ◽  
2005 ◽  
Vol 16 (3) ◽  
pp. 130-135
Author(s):  
Malin Frick-Engfeldt ◽  
Erik Zimerson ◽  
Daniel Karlsson ◽  
Åsa Marand ◽  
Gunnar Skarping ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Patch Test ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Isophorone Diisocyanate

Chemical Analysis of 2,4-Toluene Diisocyanate, 1,6-Hexamethylene Diisocyanate and Isophorone Diisocyanate in Petrolatum Patch-Test Preparations

Dermatitis ◽  
2005 ◽  
Vol 16 (03) ◽  
pp. 130 ◽  
Author(s):  
Malin Frick-Engfeldt ◽  
Erik Zimerson ◽  
Daniel Karlsson ◽  
Åsa Marand ◽  
Gunnar Skarping ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Patch Test ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Isophorone Diisocyanate

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

2021 ◽  
Vol 8 (3) ◽  
pp. 20210305
Author(s):  
K. Yu. Ivanova ◽  
M. V. Kuzmin ◽  
L. G. Rogozhina ◽  
A. O. Patianova ◽  
V. L. Semenov ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Electrical Resistivity ◽  
Direct Current ◽  
Electrical Resistance ◽  
Copper Wire ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Isophorone Diisocyanate ◽  
Aromatic Solvent ◽  
Operational Characteristics

Polyfunctional silylureas were synthesized by the interaction of 3-aminopropyltriethoxysilane with isocyanates of various structures in an inert aromatic solvent. Commercially available diisocyanates such as isophorone diisocyanate, hexamethylene diisocyanate, 2,4-toluene diisocyanate were used as isocyanates. In this case, freshly distilled toluene was used as a solvent. The structures of the obtained compounds were confirmed by the data of IR and NMR1H spectroscopy. Using the synthesized compounds, formulations of compositions for electrodeposition of a tin-indium alloy on a copper wire were developed. The possibility of using silylureas of various structures as effective surfactants used in the electrodeposition of the tin-indium alloy is shown. The operational characteristics of the obtained wire were investigated, including the wire diameter, coating thickness, tensile strength, electrical resistance, and direct current electrical resistivity.

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

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2782 ◽  
Author(s):  
Hatem Abushammala ◽  
Jia Mao
Keyword(s):  
Surface Modification ◽  
Functional Groups ◽  
Phenyl Isocyanate ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Diphenylmethane Diisocyanate ◽  
Chemical Modifications ◽  
Advantages And Disadvantages ◽  
Wide Range ◽  
Simple Molecules

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 groups onto its surface, which varied from simple molecules to polymers. Among many, aliphatic and aromatic mono- and di-isocyanates are a group of chemicals that have been used for a century to modify cellulose. Despite only being used recently with nanocellulose, they have shown great potential as surface modifiers and chemical linkers to graft certain functional chemicals and polymers onto the nanocellulose surface. This review discusses the modification of cellulose and nanocellulose using isocyanates including phenyl isocyanate (PI), octadecyl isocyanate (OI), toluene diisocyanate (TDI), diphenylmethane diisocyanate (MDI), hexamethylene diisocyanate (HMDI), and their derivatives and polymers. It also presents the most commonly used nanocellulose modification strategies including their advantages and disadvantages. It finally discusses the challenges of using isocyanates, in general, for nanocellulose modification.

Current patch test results in consecutive patients with, and chemical analysis of, disperse blue (DB) 106, DB 124, and the mix of DB 106 and 124

2007 ◽  
Vol 57 (4) ◽  
pp. 230-234 ◽  
Author(s):  
Wolfgang Uter ◽  
Stephan Hildebrandt ◽  
Johannes Geier ◽  
Axel Schnuch ◽  
Holger Lessmann
Keyword(s):  
Chemical Analysis ◽  
Patch Test ◽  
Test Results

FS12.5
Chemical analysis of MDI in petrolatum patch test preparations

2008 ◽  
Vol 50 (3) ◽  
pp. 166-166
Author(s):  
Malin Frick ◽  
E Zimerson ◽  
D Karlsson ◽  
Å Mar ◽  
G Skarping ◽  
...  
Keyword(s):  
Chemical Analysis ◽  
Patch Test

scholarly journals β-Cyclodextrin conjugated bifunctional isocyanate linker polymer for enhanced removal of 2,4-dinitrophenol from environmental waters

2018 ◽  
Vol 5 (8) ◽  
pp. 180942 ◽  
Author(s):  
J. M. Anne ◽  
Y. H. Boon ◽  
B. Saad ◽  
M. Miskam ◽  
M. M. Yusoff ◽  
...  
Keyword(s):  
Freundlich Isotherm ◽  
Environmental Water ◽  
Hexamethylene Diisocyanate ◽  
Toluene Diisocyanate ◽  
Batch Adsorption ◽  
Order Kinetic ◽  
Environmental Waters ◽  
Order Kinetic Model ◽  
Pseudo Second Order ◽  
Optimized Conditions

In this work, we reported the synthesis, characterization and adsorption study of two β-cyclodextrin (βCD) cross-linked polymers using aromatic linker 2,4-toluene diisocyanate (2,4-TDI) and aliphatic linker 1,6-hexamethylene diisocyanate (1,6-HDI) to form insoluble βCD-TDI and βCD-HDI. The adsorption of 2,4-dinitrophenol (DNP) on both polymers as an adsorbent was studied in batch adsorption experiments. Both polymers were well characterized using various tools that include Fourier transform infrared spectroscopy, thermogravimetric analysis, Brunauer–Emmett–Teller analysis and scanning electron microscopy, and the results obtained were compared with the native βCD. The adsorption isotherm of 2,4-DNP onto polymers was studied. It showed that the Freundlich isotherm is a better fit for βCD-TDI, while the Langmuir isotherm is a better fit for βCD-HMDI. The pseudo-second-order kinetic model represented the adsorption process for both of the polymers. The thermodynamic study showed that βCD-TDI polymer was more favourable towards 2,4-DNP when compared with βCD-HDI polymer. Under optimized conditions, both βCD polymers were successfully applied on various environmental water samples for the removal of 2,4-DNP. βCD-TDI polymer showed enhanced sorption capacity and higher removal efficiency (greater than 80%) than βCD-HDI (greater than 70%) towards 2,4-DNP. The mechanism involved was discussed, and the effects of cross-linkers on βCD open up new perspectives for the removal of toxic contaminants from a body of water.

Shoe contact dermatitis from dimethyl fumarate: clinical manifestations, patch test results, chemical analysis, and source of exposure

2009 ◽  
Vol 61 (5) ◽  
pp. 249-260 ◽  
Author(s):  
Ana Giménez-Arnau ◽  
Juan Francisco Silvestre ◽  
Pedro Mercader ◽  
Jesus De la Cuadra ◽  
Isabel Ballester ◽  
...  
Keyword(s):  
Contact Dermatitis ◽  
Chemical Analysis ◽  
Patch Test ◽  
Clinical Manifestations ◽  
Dimethyl Fumarate ◽  
Test Results
Sign in / Sign up

Export Citation Format

Share Document