The photocrosslinking of some photocrosslinkable systems based on glyxydyl ete of o-crezolformaldebyde resin. I - Influence of the content of the cationic photoinitiator on the photocrosslinking of the system CG-BCDE-TAS.

Abstract

The influence of the content of cationic photoinitiator-triarylsulfonium salt (TAS) on the photocrosslinking of the systems containing glyxydyl ete of o-crezolformaldehyde resine (CO), hiscycloaliphatic diepoxy monome (BCDE) with the mass ratio CGIBCDE = 111 has been studied. The study of the photopolymerization of the epo.vy group in the 20 jjin thickness film of the system hy IR - Spectroscopy in the presence of TAS in the range from 1% to 7% of the total mass of the CO and BCDE showed the fastest convertion rate of the TAS and epoxy groups at the content of TAS 5%. leading to the final convertion of TAS, epo.xy groups of BCDE and the total epoxy groups ofCG and BCDE 99%. 98% and 82% respectively after exposure under 250 mW/cnr intensity UV - lamp.