C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 18/08 (2006.01) C08G 18/62 (2006.01) C08G 18/80 (2006.01) C09D 175/16 (2006.01)
Patent
CA 2438580
The invention relates to powder slurries which can be hardened thermally and by means of actinic radiation, and which contain solid and/or highly viscous particles which are dimensionally stable under conditions of storage and use. Said particles contain (A) a binding agent which is free of carbon-carbon double bonds which can be activated by means of actinic radiation, said binding agent containing at least one (meth)acrylate copolymer having a statistical mean of at least one isocyanate-reactive functional group and at least one ionic group in the molecule, (B) at least one blocked and/or unblocked polyisocyanate, and (C) at least one olefinically unsaturated constituent which is free of isocyanate-reactive functional groups and has a statistical mean of more than four carbon-carbon double bonds which can be activated by means of actinic radiation in the molecule, and at least one hardening segment in the molecule. The invention also relates to a method for producing said slurries and the use of the same.
L'invention concerne des suspensions pulvérulentes durcissables thermiquement et par rayonnement actinique, renfermant des particules solides et/ou très visqueuses, à stabilité dimensionnelle en conditions de stockage et d'utilisation. Ces particules contiennent (A) un liant, exempt de doubles liaisons carbone-carbone activables par rayonnement actinique et renfermant au moins un polymère de (méth)acrylate avec, en moyenne statistique, au moins un groupe fonctionnel réactif aux isocyanates et au moins un groupe ionique dans la molécule, (B) au moins un polyisocyanate bloqué et/ou non bloqué et (C) au moins un constituant oléfiniquement insaturé, exempt de groupes fonctionnels réactifs aux isocyanates et renfermant, en moyenne statistique, plus de quatre doubles liaisons carbone-carbone activables par rayonnement actinique dans la molécule ainsi qu'au moins un segment durcissant dans la molécule. Cette invention concerne également un procédé de production desdites suspensions et leur utilisation.
Baumgart Hubert
Ott Guenther
Roeckrath Ulrike
Wegner Egon
Wilke Guido
Basf Coatings Ag
Robic
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