Formanilide → Toluene 2,4-Diisocyanate

HRID 224914

Reaction equation

[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

Participants

Reactant 2

HCID 7671Formanilide

HCID 19824838Benzylbenzene diisocyanate

Product 1

HCID 11443Toluene 2,4-Diisocyanate

Procedure

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.

Sources & evidence

ORD record: ord-40d8a134711a4ad5aa4b7ee533833271
Source dataset: uspto-grants-1980_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04234694

Linked notes

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