Gas chromatographic method for the determination of residual monomers, 2-(acryloyloxy)ethyl isocyanate and 2-(methacryloyloxy)ethyl isocyanate, as curing agents in an ultraviolet curable adhesive.
A gas chromatographic method is described for the determination of residual 2-(acryloyloxy)ethyl isocyanate (AOI) and 2-(methacryloyloxy)ethyl isocyanate (MOI) as curing agents in an ultraviolet curable adhesive. Pre-column derivatization was employed in the determination of AOI and MOI as a means of enhancing the response of the flame ionization detector. Urethane derivatives of AOI and MOI were derived using methanol for 30 min at room temperature. The accuracies (n = 5, three concentration levels) were in the range of 113.4 to 126.7%, and precisions (n = 5, three concentration levels) were in the range of 0.8 to 4.3% for AOI-OMe. Furthermore, the accuracies were in the range of 79.5 to 108.6% and the precisions were in the range of 1.0 to 2.4% for MOI-OMe. The correlation coefficients of six calibration standards were all greater than 0.9999 for AOI-OMe and greater than 0.9998 for MOI-OMe over the range from 10 to 100 µg/mL.
1Analytical Science, LG Chem. Research Park, LG Chem. Ltd., 104-1 Moonji-Dong, Yusong-Gu, Daejeon, 305-380, South Korea.
Byoung-Hyoun
BH
Kim
Nosun
N
Kim
Dong Cheul
DC
Moon
D000269:Adhesives / Q000032:analysis / Q000737:chemistry*; D002849:Chromatography, Gas / Q000379:methods*; D017953:Isocyanates / Q000032:analysis* / Q000737:chemistry; D057230:Limit of Detection; D015203:Reproducibility of Results; D014466:Ultraviolet Rays; D014520:Urethane / Q000737:chemistry
D000269:Adhesives; D017953:Isocyanates; D014520:Urethane