PREPARATION OF ISOCYANURATE-AND/OR URETDIONE-CONTAINING POLYISOCYANATES HAVING A REDUCED COLOR INDEX AND IMPROVED SHELF LIFE, AND PRODUCTS PREPARED BY THIS METHOD

摘要

of the Disclosure: Isocyanurate- and/or uretdione-containing polyisocyanates having a reduced color index and improved shelf life are prepared by conventional catalytic oligomerization of aliphatic and/or cycloaliphatic diisocyanates and treatment of the oligomerization products with peroxycarboxylic acids.