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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1105746Generated: October 26, 2026

Caprolactam → Vinyl isocyanate caprolactam

https://huagongshe.com/reaction/1105746

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCaprolactamHCID 7768—
ReactantVinyl isocyanateHCID 77094—
ReactantIsocyanateHCID 105034—
SolventEthyl AcetateHCID 8857—
ProductVinyl isocyanate caprolactamHCID 86738431—

Reaction Conditions

Temperature50 °C

Reaction Steps

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%.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04310398
Source datasetuspto-grants-1982_01
ORD IDord-b8c0f43964014c6ea05750e18deee085
Source noteuspto-grants-1982_01