| abstract |
Di-amines endowed with chain extension activity for formulations such as polyureas and polyurethanes are disclosed, and which have general formula (1) wherein n is 0-1000 and m is 0-100; R1, R2, R5, and R6 are each independently selected from the group consisting of H, -CH3, -CH2CH3, -CH2OH, and -CH2-CH2-OH; and R3 and R4 are each independently selected from the group consisting of -C2H4-; and -C3H6-; and the diasteromeric salts thereof. |