0 0240 and 0 0c90 grams respectively of an alkylbenzenesulfonic acid las acid from vista chemical company were added to three vials and the vials were shaken the via s contained small globules of darkened material which were considered to be acid droplets encapsulated by dipb polymer in a relatively soft slightly gelled mass upon addition of the acid to the dipb mixing could not be carried out fast enough to dissolve the acid before the acid droplets became encapsulated with polymer this experiment was performed to show the effect of adding a diphenylamine to the cationic curing agent the same alkylbenzenesulfonic acid used in example 1 was mixed with an equal weight of a liquid alkylated diphenylamine naugalube u00ae 438l aliquots of 0 1039 g and 0 0347 g were added to vials containing log of diisopropenylbenzene monomer the components mixed easily at room temperature the mixtures were poured into test tubes and the test tubes were placed in a 150 u00b0 c oil bath gelation was observed in one mixture after 45 minutes and a marked increase in viscosity was seen in the other after seven hours the acid used in example 1 was mixed with naugalube u00ae 438l or diphenylamine in the proportions shown in table 1 and the acid amine mixture was then mixed into 50 g of dipb in a flask.