Patent ID: 6984715

Claim:
An aspartate of the formula: where X represents an m-valent organic residue obtained by removing the primary amino group or groups from a mono or polyamine which has (cyclo)aliphatically bound amino groups and a number average molecular weight of 60 to 6000, and which 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 1 and R 2 may be identical or different and represent hydrogen or organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less, R 3 and R 4 may be identical or different and represent organic groups which are inert towards isocyanate groups at a temperature of 100° C. or less, R 5 represents a member selected from the group consisting of C 2 H 4 , C 3 H 6 and C 5 H 10 , a and b represent integers of from 1 to 5, provided that the sum of a and b is from 2 to 6 and x is 1 when R 5 represents C 2 H 4 or C 3 H 6 and represents 0 when R 5 represents C 5 H 10 .