Di(2-ethylhexyl) phthalate → Toluene 2,4-Diisocyanate

HRID 1657903

Reaction equation

HRID 1657903 reaction equation
[C:1]1([CH3:19])[C:2]([NH:13][C:14](OCC)=[O:15])=[CH:3][C:4]([NH:7][C:8](OCC)=[O:9])=[CH:5][CH:6]=1.CCCCC(COC(C1C(C(OCC(CCCC)CC)=O)=CC=CC=1)=O)CC>>[CH3:19][C:1]1[CH:6]=[CH:5][C:4]([N:7]=[C:8]=[O:9])=[CH:3][C:2]=1[N:13]=[C:14]=[O:15]

Participants

3

Reactant 2

HCID 8343Di(2-ethylhexyl) phthalateHCID 343975Diethyl toluene-2,4-dicarbamate

Product 1

HCID 11443Toluene 2,4-Diisocyanate

Conditions

Temperature
250 °C

Procedure

A mixture of 10 g of diethyl toluene- 2,4-dicarbamate and 50 g of di-2-ethylhexyl phthalate was heated in a cylindrical reactor at 250° C. for 1 hour. Nitrogen at 32 liters per hour was passed through a fritted disc at the bottom of the reactor. A yield of toluene-2,4-diisocyanate of 57.6 mol percent together with 28.6 mol percent of the monocarbamate and 2.5 mol percent of unconverted dicarbamate was obtained. This run demonstrated that ester type solvents also can be employed in the process of this invention with excellent results.

Sources & evidence

ORD record
ord-47bd38a72ba346dcadb8eb0e2cab0a2b
Source dataset
uspto-grants-1976_06
Patent number
US03962302

Linked notes

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