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The hardness development of 8230 and 9237-70 formulations, within the first 17 hours after mixing, is slower than that of the other evaluated formulations. The 8230 and 9237-70 formulations require another 24 hours of room temperature cure time to approximate the hardness of the other evaluated systems. Pot life, cure rate by loss of enthalpy and uncured Tg after 6 days at R.T. and cured Tg indicate that all the evaluated resins perform similarly with Ancamine 1693 after an adequate cure. Test results appear on the attached table.