Formanilide → Toluene 2,4-Diisocyanate

HRID 224914

Reaktionsgleichung

Reaktionsgleichung von HRID 224914
[N-:1]=[C:2]=[O:3].[N-:4]=[C:5]=[O:6].[C:7]1([CH2:13]C2C=CC=CC=2)[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1.N(C=O)C1C=CC=CC=1>>[CH3:13][C:7]1[C:8]([N:4]=[C:5]=[O:6])=[CH:9][C:10]([N:1]=[C:2]=[O:3])=[CH:11][CH:12]=1

Komponenten

3

Edukt 2

HCID 7671FormanilideHCID 19824838Benzylbenzene diisocyanate

Produkt 1

HCID 11443Toluene 2,4-Diisocyanate

Versuchsvorschrift

7 g of the addition compound described in Example 22, 1 g of a polysiloxane-polyalkylene glycol of Example 32 (foam stabilizer) and 200 g of a mixture of 70% by weight of crude diphenylmethane diisocyanate which had been prepared by aniline formaldehyde condensation followed by phosgenation, and 30% by weight of the distillation residue obtained from the preparation of tolylene diisocyanate were vigorously stirred together as described in Example 36. The isocyanate mixture has an isocyanate content of 29.1% and a viscosity of 1030 cP/25° C. This mixture was then heated to 150° C. for 30 minutes.

Quellen und Nachweise

ORD-Eintrag
ord-40d8a134711a4ad5aa4b7ee533833271
Quelldatensatz
uspto-grants-1980_11
Patentnummer
US04234694

Verknüpfte Notizen

Wird geladen…