US 2003/0148039 A1Published application

Method for producing coatings, adhesive layers or sealing layers for primed or unprimed substrates

OwnerRainer Blum, Peter Keller +1inventors

InventorsRainer Blum, Peter Keller, Christopher Hilger

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Abstract

Process for producing coatings, adhesive films or seals which comprises (1) applying coating materials, adhesives and sealing compounds comprising a constituent (A) which contains groups (a) containing bonds which can be activated with actinic radiation, and also photoinitiators (B), in the form of a water-free and solvent-free liquid or melt, a powder, a powder slurry, a dispersion or a solution in at least one organic solvent, dispersion or solution in an aqueous medium to and/or into a primed or unprimed substrate, (2) drying the powder slurry layer or the layer of a dispersion or solution, or causing the layer of the melt to solidify or maintaining it in the melted state by heating, (3) melting the solid layers by heating, and (4) first irradiating the liquid layers resulting from step (1) of the process or the melted layers resulting from step (2) or (3) of the process in the melted state, during solidification and/or after solidification with near infrared radiation and then fully curing them with UV radiation and/or electron beams or fully curing them simultaneously with NIR radiation and UV radiation and/or electron beams.

Claims28

Dependent claims

A process for producing coatings, adhesive films or seals for primed or unprimed substrates, which comprises

(1) applying at least one free-radically and/or ionically curable coating material and/or adhesive and/or sealing compound comprising
(A) at least one constituent containing on average per molecule at least one group (a) containing at least one bond which can be activated with actinic radiation, and
(B) at least one photoinitiator,
in the form of
(1.1) a water-free and solvent-free liquid or melt,
(1.2) a powder,
(1.3) a powder slurry,
(1.4) a dispersion or a solution in at least one organic solvent, or
(1.5) a dispersion or a solution in an aqueous medium to and/or into the primed or unprimed substrate,
(2) drying the resultant powder slurry layer (1.3) or the resultant layer of a dispersion or a solution (1.4) or (1.5) or causing the resultant layer of the melt (1.1) to solidify or maintaining it in a melted state by heating,
(3) melting, by heating, the resultant solid layer (1.2), (1.3), (1.4) or (1.5), and
(4) first irradiating the liquid layer resulting from step (1) of the process or the melted layer resulting from step (2) or (3)of the process
(4.1) in the liquid or melted state,
(4.2) during solidification, and/or
(4.3) after solidification
with near infrared (NIR) radiation and then curing it with UV radiation and/or electron beams or fully curing it simultaneously with NIR and UV radiation and/or electron beams.

13 more elements

Dependencies are inferred from the claim text.