Patent ID: 7307140

Claim:
A polyaspartimide of the formula: where X represents an n-valent polyether radical obtained by the removal of n amino groups from a polyether amine corresponding to the formula, X—(NH 2 ) n , wherein said polyether amine has a number average molecular weight of from about 200 to about 6000, and may contain further functional groups that either are reactive with isocyanate groups or are inert to isocyanate groups at temperatures of up to 100°C., R 2 and R 3 may be the same or different and represent moieties selected from the group consisting of i) hydrogen, ii) straight or branched C 1 to C 8 alkyl groups, which may be substituted with up to three aryl groups containing from 6 to 10 carbon atoms, iii) C 6 to C 10 aryl groups, which may be substituted with up to three alkyl groups having from 1 to 3 carbon atoms, and iv) together form a five or six-membered cycloalkyl group, with said cycloalkyl group being substituted with from 0 to 3 alkyl groups having from 1 to 3 carbon atoms, R 1 represents a moiety selected from the group consisting of i) hydrogen, ii) straight or branched C 1 to C 8 alkyl groups, which may be substituted with up to three aryl groups containing from 6 to 10 carbon atoms, and iii) C 6 to C 10 aryl groups, which may be substituted with up to three alkyl groups having from 1 to 3 carbon atoms, and n represents an integer of from 2 to 4.