Ethers polyaspartic acid mono- and stabilized.

Compositions containing esters of mono- and polyaspartic acid of general formula (I), wherein X represents an organic moiety valence m which optionally contains one or more heteroatoms, as obtainable by removal of the group or groups primary amino of a corresponding mono or polyamine of molecular weight between 60-6000 having primary amino groups attached to (cyclo) aliphatic or araliphatic, and that may contain other reactive functional groups to isocyanate and / or inert groups at temperatures up 100 ° C. R1 and R2 represent the same or different organic radicals, preferably identical or different alkyl radicals each having 1 to 18 carbon atoms and, especially preferably, the same or different alkyl radicals each having 1 to 8 carbon atoms carbon and m represents an integer 1 and an addition product consisting of a compound of general formula (II) (component a), R 1 OOC-CH = CH-COOR 2 (II) wherein the radicals R1 and R2 have the meaning mentioned above, and a thiol compound of general formula (III) (component B), [HS] n-R3 (III) wherein R3 is an organic radical n-valent having optionally one or more heteroatoms and may contain other functional groups reactive or inert to isocyanate, and n represents an integer 1 and 4.