DBU-intercalated γ-titanium phosphate as a latent thermal catalyst in the reaction of glycidyl phenyl ether (GPE) and hexahydro-4-methylphthalic anhydride (MHHPA)

Ayumi Fujiwara; Hiroshi Furuya; Shekh Md Mamun Kabir; Motohiro Shizuma; Atsushi Ohtaka; Osamu Shimomura

doi:10.1039/d2ra08209h

DBU-intercalated γ-titanium phosphate as a latent thermal catalyst in the reaction of glycidyl phenyl ether (GPE) and hexahydro-4-methylphthalic anhydride (MHHPA)

RSC Adv. 2023 Mar 15;13(13):8630-8635. doi: 10.1039/d2ra08209h. eCollection 2023 Mar 14.

Authors

Ayumi Fujiwara¹, Hiroshi Furuya¹, Shekh Md Mamun Kabir^{1

2}, Motohiro Shizuma³, Atsushi Ohtaka¹, Osamu Shimomura¹

Affiliations

¹ Department of Applied Chemistry, Osaka Institute of Technology 5-16-1 Omiya, Ashahi-ku Osaka 535-8585 Japan osamu.shimomura@oit.ac.jp.
² Department of Wet Process Engineering, Bangladesh University of Textiles Tejgaon Dhaka-1208 Bangladesh.
³ Osaka Research Institute of Industrial Science and Technology 1-6-50 Morinomiya, Joto-ku Osaka 536-8553 Japan.

Abstract

The capabilities and performance of γ-titanium phosphate (γ-TiP) with 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) as a latent thermal catalyst were investigated by the copolymerization of glycidyl phenyl ether (GPE) and hexahydro-4-methylphthalic anhydride (MHHPA) at different temperatures for a period of one hour. Polymerization was not observed until the reactants were heated to 100 °C. Upon increasing the temperature to 120 °C, the conversion in the presence of γ-TiP·DBU as a catalyst showed 98% conversion in 1 h. The thermal stability of GPE and MHHPA reacted in the presence of γ-TiP·DBU at 40 °C for 144 h resulted in less than 7% conversion of GPE. The conversion of GPE did not show a significant increase at 40 °C.