The invention relates to a method of preparing a polyisocyanate with at least one uretdione group by oligomerizing part of the isocyanate groups of isophorone diisocyanate in the presence of a catalyst which accelerates the dimerization of isocyanate groups, wherein the oligomerization catalyst comprises a saline compound comprising from 10 to 100 wt. % of 1,2,3- and/or 1,2,4-triazolate structures (calculated as C
2
N
3
; molecular weight=
66
) in the anion, and the products prepared by this method.
该发明涉及一种制备至少含有一种
脲二酮基团的聚
异氰酸酯的方法,通过在异佛酮二异
氰酸的异
氰酸基的部分上聚合,在加速异
氰酸基的二聚化的催化剂存在下,其中聚合催化剂包括含有10至100重量%的1,2,3-和/或
1,2,4-三唑结构(以
C2N3计算;分子量=66)的盐化合物,以及通过该方法制备的产品。