Carbamic acid, ethyl ester → Urethane acrylate

HRID 539425Notes

Reaction equation

HRID 539425 reaction equation
[C:1]([O:5]CCO)(=[O:4])[CH:2]=[CH2:3].[NH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11]>>[C:1]([OH:5])(=[O:4])[CH:2]=[CH2:3].[NH2:9][C:10]([O:12][CH2:13][CH3:14])=[O:11]

Participants

3

Reactant 2

HCID 5641Carbamic acid, ethyl esterHCID 131652-Hydroxyethyl acrylate

Product 1

HCID 21863578Urethane acrylate

Conditions

Temperature
50 °C

Procedure

Subsequently, in order to prevent the thermal polymerization of vinyl groups, a reactor was cooled to a temperature of about 50° C., and then 0.657 mol of hydroxyethyl acrylate was added to the urethane prepolymer and then stirred for 4˜6 hours until isocyanate groups were completely consumed. The fact that residual isocyanate does not exist according to the characteristic peak of N═C═O near a frequency of 2270 cm−1 using Fourier transfer infrared spectroscopy (FT-IR) was confirmed, and then the reaction was terminated to obtain a urethane acrylate oligomer.

Workup

  1. customthe thermal polymerization of vinyl groups, a reactor
  2. customwere completely consumed
  3. customthe reaction was terminated

Sources & evidence

ORD record
ord-0a423f8fba484b1d92d1459e01faf62a
Source dataset
uspto-grants-2014_10
Patent number
US08871313B2

Reaction notes

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