Methyl Isobutyl Ketone → Toluene 2,4-Diisocyanate

HRID 1197017Notes

Reaction equation

HRID 1197017 reaction equation
N1[CH2:5][CH2:4][N:3]=[CH:2]1.C1(=O)OC(C)C[O:7]1.[N-:13]=[C:14]=[O:15].[CH2:16]([C:20](C)=O)[CH:17]([CH3:19])[CH3:18]>>[CH3:19][C:17]1[C:16](=[CH:20][C:4](=[CH:5][CH:18]=1)[N:3]=[C:2]=[O:7])[N:13]=[C:14]=[O:15]

Participants

4

Reactant 3

HCID 7909Methyl Isobutyl KetoneHCID 105034IsocyanateHCID 86745856HCID 86745856, compound

Product 1

HCID 11443Toluene 2,4-Diisocyanate

Conditions

Temperature
66 °C

Procedure

The half capped organic diisocyanate was charged into the reaction vessel and heated to about 66° C. under a blanket of nitrogen. Heating was stopped and the Imidazoline/propylene carbonate adduct was added slowly with the methyl isobutyl ketone. An exothermic reaction occurred and the temperature of the reaction mixture increased to 94° C. and then held at this temperature until all of the isocyanate was reacted which was determined by infrared analysis of the reaction mixture. The resulting reaction product had a solids content of 85.5%.

Workup

  1. temperatureHeating
  2. customAn exothermic reaction
  3. temperaturethe temperature of the reaction mixture increased to 94° C.
  4. customwas reacted which
  5. customThe resulting reaction product

Sources & evidence

ORD record
ord-8a6b9de00a0b49419f5df540700dec37
Source dataset
uspto-grants-1992_05
Patent number
US05116903

Reaction notes

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