Binder mixtures of polyaspartates and sulfonate-modified polyisocyanates

摘要

The present invention relates to two-component coating systems for the production of polyurea coatings containing A) a sulfonate group-containing polyisocyanate and B) an amino-functional polyaspartate corresponding to formula (I) wherein X represents the n-valent organic group obtained by removing the primary amino groups from an n-valent polyamine, R¹, R² represent the same or different organic groups, which are inert to isocyanate groups under the reaction conditions, and n represents an integer of at least 2. The present invention also relates to coatings obtained from these coating systems.