Radiation-curable coating compounds

Details Radiation-curable coating compounds Radiation-curable coating compounds

C - Chemistry, Metallurgy

09

D

C09D 5/32 (2006.01) B05D 1/36 (2006.01) B05D 3/06 (2006.01) B05D 7/24 (2006.01) C08F 2/48 (2006.01) C08G 18/62 (2006.01) C08J 3/28 (2006.01) C09D 5/08 (2006.01) C09D 133/10 (2006.01) C09D 175/14 (2006.01)

Patent

CA 2379516

Coating compounds curable by means of high-energy radiation, comprising as binder A) at least one (meth)acrylic copolymer containing olefinic double bonds capable of free-radical polymerization and hydroxyl groups with a C=C equivalent weight from 100 to 10,000 and an OH-value from 20 to 250 mg KOH/g, which is prepared from.monomers comprising: Al) at least one olefinically unsaturated, epoxy-functional monomer capable of free-radical polymerization, A2) at least one olefinically unsaturated, carboxy-functional monomer capable of free-radical polymerization and A3) at least one further olefinically unsaturated monomer capable of free-radical polymerization which is different from A1) and A2), and B) at least one component with free isocyanate groups and process for multilayer coating using the coating compounds.

Compositions de recouvrement durcissables par rayonnement à grande énergie, comprenant comme liant A) au moins un copolymère (meth)acrylique contenant des doubles liaisons oléfiniques capables de polymérisation radicalaire et des groupes hydroxyle ayant un poids équivalent C=C de 100 à 10 000 et une valeur OH de 20 à 250 mg KOH / g, qui est préparé à partir de monomères comprenant : Al) au moins un monomère à insaturation oléfinique et à fonctionnalité époxy capable de polymérisation radicalaire, A2) au moins un monomère à insaturation oléfinique et à fonctionnalité carboxy capable de polymérisation radicalaire et A3) au moins un autre monomère à insaturation oléfinique capable de polymérisation radicalaire qui est différent de A1) et de A2 ), et B) au moins un composant avec des groupes isocyanate libres et un procédé de recouvrement multicouche utilisant les compositions de recouvrement.

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