| abstract |
Cross-linkable diisocyanate polyaddition products containing uretdione groups statistically distributed in the products prepared by reacting: n 1. uretdione group-containing polyisocyanates having aliphatically bound isocyanate and uretdione groups, which polyisocyanates may be mixed with polyisocyanates free from uretdione groups and containing aliphatically bound isocyanate groups, and n 2. chain lengthening agents which contain at least two active hydrogen atoms. |