A comparison of some imidazoles in the curing of epoxy resin

Investigation of soluble PEG-imidazoles as the thermal latency catalysts for epoxy-phenolic resins

“…Nevertheless, the biphenyl type epoxy resins of low molecular weight show low storage stability at room temperature. To improve the pot life at room temperature, latent catalysts are thus developed [10].…”

“…Many imidazole derivatives [10,12,13] were reported and developed as epoxy curing agents in the recent research because they can provide polymers of better heat * Corresponding author. Tel.…”

Microencapsulation of imidazole curing agent for epoxy resin

“…The anionic polymerization of the epoxy functional groups was conducted from the anionic functional groups in the 1:2 adduct. This anionic polymerization only occurred 5-10 times [22].…”

Preparation and characterization of a novel microcapsule-type latent curing agent for epoxy resin

“…Imidazole can react with the epoxy resin easily. At room temperature, the epoxy resin changes into polymer after being mixed with the imidazole curing agent for a period ranging from 1 h to 1 day, so imidazole is an active rather than latent curing agent for epoxy resin systems [24,25]. However, in many application conditions such as electronic equipments and healing of composites, the epoxy resin and the curing agent are required to not react with each other at room temperature but react speedily at a given condition such as a much higher temperature [7,21,26].…”