| abstract |
A compound having formula (I) n n n n n n n n n n wherein R 1 is methyl or ethyl; R 2 is hydrogen, methyl, CH 2 C(NH 2 )(R 1 )(CH 2 OH) or R 2 groups combine to form a difunctional C 2 -C 6 alkyl group; and X is a difunctional group selected from the group consisting of C 2 -C 20 alkyl, C 5 -C 20 cycloalkyl, C 6 -C 10 aryl, C 8 -C 20 aryl alkyl, C 4 -C 20 heteroalkyl or C 10 -C 20 aryl heteroalkyl. |