Toluene 2,6-Diisocyanate → Tolylene diisocyanate sec-butanol

HRID 1577051

Reaktionsgleichung

Reaktionsgleichung von HRID 1577051
[CH3:1][C:2]1[C:3]([N:11]=[C:12]=[O:13])=[CH:4][C:5]([N:8]=[C:9]=[O:10])=[CH:6][CH:7]=1.[CH3:14][C:15]1C(N=C=O)=CC=[CH:19][C:20]=1N=C=O.[N-]=C=[O:29]>C(O)(CC)C>[CH3:1][C:2]1[C:3]([N:11]=[C:12]=[O:13])=[CH:4][C:5]([N:8]=[C:9]=[O:10])=[CH:6][CH:7]=1.[CH:15]([OH:29])([CH2:20][CH3:19])[CH3:14]

Komponenten

5

Edukt 3

HCID 7040Toluene 2,6-DiisocyanateHCID 11443Toluene 2,4-Diisocyanate2×HCID 105034Isocyanate

Produkt 1

HCID 131712267Tolylene diisocyanate sec-butanol

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 6568(+-)-2-ButanolLösungsmittel

Versuchsvorschrift

Separately, 81.4 parts of sec-butanol was added dropwise at less than 50° C. to 174 parts of tolylene diisocyanate (a mixture of 80% of 2,4-tolylene diisocyanate and 20% of 2,6-tolylene diisocyanate), and they were reacted at 60° C. until the isocyanate value of the produce became 148. Thus, a partially blocked diisocyanate having a molar ratio (tolylene diisocyanate/sec-butanol) of 1:1.1 was obtained. This product is referred to as an "isocyanate C".

Quellen und Nachweise

ORD-Eintrag
ord-869e12d5e47f4e8db51e6f1f7782a653
Quelldatensatz
uspto-grants-1981_09
Patentnummer
US04287041

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