C - Chemistry – Metallurgy – 08 – K
Patent
C - Chemistry, Metallurgy
08
K
C08K 5/3435 (2006.01) C08G 18/80 (2006.01) C08K 5/25 (2006.01) C09D 175/04 (2006.01)
Patent
CA 2215649
The present invention relates to (cyclo)aliphatic polyisocyanates which have a content of blocked and unblocked isocyanate groups (calculated as NCO) of 5 to 25 wt.%, in which at least 95% of the isocyanate groups are present in a form blocked with blocking agents, and which also contain 0.1 to 5.0 wt.% of amines having a structural unit corresponding to formula (I) Image The present invention also relates to the use of the blocked polyisocyanates according to the invention as crosslinking agents for organic polyhydroxyl compounds in 1C- PUR stoving lacquers, especially for automotive clearcoats and coil coating lacquers.
Engbert Theodor
Konig Eberhard
Noble Karl-Ludwig
Aktiengesellschaft Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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