14219-05-7Relevant academic research and scientific papers
FLOW CHEMISTRY SYNTHESIS OF ISOCYANATES
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Paragraph 0175; 0185-0187; 0303; 0308-0313, (2021/06/22)
The disclosure provides, inter alia, safe and environmentally-friendly methods, such as flow chemistry, to synthesize isocyanates, such as methylene diphenyl diisocyanate, toluene diisocyanate, hexamethylene diisocyanate, isophorone diisocyanate, and tetramethylxylene diisocyanate.
Process for the production of the toluene diisocyanate
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Page/Page column 5; 6, (2008/06/13)
The invention relates to a process for the production of toluene diisocyanate, in which the crude toluenediamine obtained from the hydrogenation is purified and then phosgenated. The purification step reduces the total amount of cyclic ketones to less than 0.1 % by weight, based on 100% by weight of the toluenediamine.
