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

  • US 20030148039A1
  • Filed: 10/10/2002
  • Published: 08/07/2003
  • Est. Priority Date: 03/01/2000
  • Status: Abandoned Application
First Claim
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1. 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.

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