u00b0 f 59 48 3 05400 u00b0 f 28 80 2 00450 u00b0 f 20 93 1 89500 u00b0 f 12 25 1 46600 u00b0 f 7 98 1 25______________________________________ this example was designed to compare the uncatalyzed reactivity of a diepoxide der 332 diglycidyl ether of bisphenol a and a mono imide succinimide with the same system catalyzed with 0 25 weight percent craa two equivalents of the diepoxide were used with one equivalent of the mono imide 1 1 molar ratio to insure complete usage of the imide in each case to get relative rates and to establish the stoichiometries of the reaction the reactions were run at a constant temperature of 175 u00b0 c the disappearance of epoxide functionality was followed by a standard perchloric acid titration method the disappearance of the imide functionality was followed by titration with naoh solution using a continuous recording ph titrimeter table 6______________________________________ unreacted materialtime catalyzed uncatalyzedhrs imide epoxide imide epoxide______________________________________0 100 0 100 0 100 0 100 00 5 90 1 94 7 92 5 94 51 0 62 4 71 9 83 6 88 71 5 18 0 53 2 65 2 81 32 0 0 2 45 2 54 2 73 32 5 0 42 9 37 3 65 53 0 0 41 2 24 8 57 83 5 0 40 2 14 3 53 14 0 0 39 8 4 0 47 94 5 0 38 8 0 45 85 0 0 38 2 0 45 0______________________________________ as can be seen from the above with only 0 25 catalyst the reaction progresses about 21 2 times as rapidly.