Caprolactam → Vinyl isocyanate caprolactam

HRID 1105746Notes

Reaction equation

HRID 1105746 reaction equation
[C:1]1(=[O:8])[NH:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1.C(N=C=O)=C.[N-]=C=O>C(OCC)(=O)C>[CH:6]([N:7]=[C:1]=[O:8])=[CH2:5].[C:1]1(=[O:8])[NH:7][CH2:6][CH2:5][CH2:4][CH2:3][CH2:2]1

Participants

5

Reactant 3

HCID 7768CaprolactamHCID 77094Vinyl isocyanateHCID 105034Isocyanate

Product 1

HCID 86738431Vinyl isocyanate caprolactam

Reagents, catalysts & solvents 1

HCID 8857Ethyl AcetateSolvent2×

Conditions

Temperature
50 °C

Procedure

113 parts of ε-caprolactam and 91 parts of ethyl acetate (+0.015% of dibutyl-tin dilaurate) are introduced into a reaction vessel and heated to about 50° C. A mixture of 69 parts of vinyl isocyanate and 91 parts of ethyl acetate is then added dropwise in the course of 1 hour. The reaction is then allowed to continue for 5 hours. A light yellow clear solution is obtained. Blocked isocyanate content: 11.5%.

Workup

  1. additionis then added dropwise in the course of 1 hour
  2. customA light yellow clear solution is obtained

Sources & evidence

ORD record
ord-b8c0f43964014c6ea05750e18deee085
Source dataset
uspto-grants-1982_01
Patent number
US04310398

Reaction notes

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