Isocyanat

Generel struktur af isocyanatgruppen.

Isocyanat er en funktionel gruppe med formlen R–N=C=O. organiske forbindelser, der indeholder en isocyanatgruppe, blive kaldt isocyanater. En isocyanat der har to isocyanatgrupper kaldes en di-isocyanat. Di-isocyanater bliver fremstillet til reaktioner med polyoler i produktionen af polyurethaner, der er en stofklasser af polymerer.[1][2][3]

Isocyanater bør ikke forveksles med cyanatestre og isocyanider, der opfører sig meget anderledes i reaktioner. Den funktionelle cyanatgruppe (R–O–C≡N) er struktureret i omvendt rækkefølge af isocyanatgruppen (R–N=C=O). Isocyanider har strukturen R-N≡C, og mangler derved oxygenet fra cyanatgrupperne.[4]

Referencer

  1. ^ Patai, Saul, red. (1977a). Cyanates and Their Thio Derivatives. The Chemistry of Functional Groups. Vol. 1. Wiley. doi:10.1002/9780470771525. ISBN 978-0-470-77152-5.
  2. ^ Christian Six; Frank Richter (2005). "Isocyanates, Organic". Ullmann's Encyclopedia of Industrial Chemistry. Weinheim: Wiley-VCH. doi:10.1002/14356007.a14_611. ISBN 978-3527306732.
  3. ^ Patai, Saul, red. (1977b). Cyanates and Their Thio Derivatives. The Chemistry of Functional Groups. Vol. 2. doi:10.1002/9780470771532. ISBN 978-0-470-77153-2.
  4. ^ 5.26 - Functions with at Least One Oxygen, Ydouble bondCdouble bondO. sciencedirect. Hentet 3/2-2025
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