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A benzophenone derivative photoinitiator,HBP-TDI-HQ-TDI-HBP (HTCTH),was synthesized based on 4-hydroxy benzo- phenone (HBP),toluene-2,4-diisocyanate (TDI) and hydroquinone (HQ).HTCTH was a more effective photoinitiator which had longer wavelength absorption in the UV-vis absorption spectra than the low molecular counterpart benzophenone (BP).It showed that both rate of polymerization (R_p) and final conversion (P) increased with increase of amine and HTCTH concentration in photopolymerization.
A benzophenone derivative photoinitiator, HBP-TDI-HQ-TDI-HBP (HTCTH), was synthesized based on 4-hydroxy benzo- phenone (HBP), toluene- 2,4- diisocyanate (TDI) and hydroquinone a more effective photoinitiator which had longer wavelength absorption in the UV-vis absorption spectra than the low molecular counterpart benzophenone (BP) .It showed that both rate of polymerization (R_p) and final conversion (P) increased with increase of amine and HTCTH concentration in photopolymerization.