| 摘要 |
1. Storage-stable polyrethane single-component balking systems which harden above 120 degrees C and consist of polyols and blocked polyisocyanates, characterized in that, as blocked polyisocyanates of which the molecule has optionally been enlarged in a known manner, there are employed reaction products of polyisocyanates and sterically hindered secondary amines of the general formula see diagramm : EP0096210,P7,F1 wherein R can be identical or different substituents from the group of hydrogen, C3 -C9 -alkyl, cycloalkyl, optionally substituted with C1 -C4 -alkyl groups and optionally containing hetero-atoms, aralkyl, R**1 can be identical or different substituents from the group of hydrogen, alkyl, cycloalkyl or aralkyl and R and R**1 can optionally from a conjoint ring. |
