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title

Influence of Blocking Agent Structure on Dissociation Temperature of Ether Alcohol-Blocked Aromatic Diisocyanates in Polyurethane Coatings

Credit to Download: 1 | Page Numbers 8 | Abstract Views: 1598
Year: 2009
COI code: ICCC03_011
Paper Language: English

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Authors Influence of Blocking Agent Structure on Dissociation Temperature of Ether Alcohol-Blocked Aromatic Diisocyanates in Polyurethane Coatings

Z Ranjbar - Department of surface coatings and corrosion, Institute for Color Science and Technology
Sh Montazeri -
M Naeeini -
M Jalili -

Abstract:

The high reactivity and toxicity of isocyanates do not allow their storage and use in one pack systems. Blocked isocyanates are a solution to overcome these drawbacks. In this study diphenyl methane diisocyanate (as aromatic diisocyanate) have been blocked by three types of ether alcohol (diethylene glycol mono ethyl ether, diethylene glycol mono butyl ether and ethylene glycol mono ethyl ether).The synthesis of blocked diisocyanates was confirmed by Fourier transform infrared spectroscopy and titration technique. Thermal dissociation of blocked isocyanates has been studied by DSC and TGA analytical methods. It was found that the degree of deblocking temperature is much affected by the structure of the blocking agents and analytical technique.

Keywords:

Aromatic diisocyanates, Deblocking temperature, Polyurethane coatings, Blocking agent

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COI code: ICCC03_011

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Ranjbar, Z; Sh Montazeri; M Naeeini & M Jalili, 2009, Influence of Blocking Agent Structure on Dissociation Temperature of Ether Alcohol-Blocked Aromatic Diisocyanates in Polyurethane Coatings, 03rd International Color and Coatings Congress, تهران, پژوهشگاه صنايع رنگ, https://www.civilica.com/Paper-ICCC03-ICCC03_011.htmlInside the text, wherever referred to or an achievement of this article is mentioned, after mentioning the article, inside the parental, the following specifications are written.
First Time: (Ranjbar, Z; Sh Montazeri; M Naeeini & M Jalili, 2009)
Second and more: (Ranjbar; Montazeri; Naeeini & Jalili, 2009)
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