u-cat 5002 is a latent curing accelerator specially developed for epoxy resin/acid anhydride curing systems. it is a derivative of tetraphenylborate and dbu salt. u-cat 5002 is uniformly soluble in anhydrides such as methyl thpa and methyl hhpa. it is insoluble in liquid epoxies such as epikote 828.   physical and chemical properties · cas no....