Blocked polyisocyanates

Abstract

The invention relates to a process for producing a blocked polyisocyanate, comprising a reaction of A) a polyisocyanate component with B) at least one branched aliphatic diol and with C) at least one secondary amine having aliphatic, cycloaliphatic and/or araliphatic substituents, characterized in that component A) comprises at least one linear aliphatic polyisocyanate A1), which has at least isocyanurate and/or iminooxadiazinedione structures, and at least one cycloaliphatic polyisocyanate A2), wherein A1) and A2) are present in an eq ratio with respect to one another of 2.0:1.0 to 5.9:1.0 and component B) is used in an amount of more than 2% by weight, based on the total amount of components A) and B), and component C) is used in an amount which corresponds to at least 95 mol % of the isocyanate groups arithmetically still present after the reaction of components A) and B), and to the blocked polyisocyanates.

Dependencies are inferred from the claim text.