USE OF MELTABLE ACRYLATE POLYMERS FOR PRODUCING CONTACT ADHESIVE LAYERS

  • US 20110014404A1
  • Filed: 03/30/2009
  • Published: 01/20/2011
  • Est. Priority Date: 03/31/2008
  • Status: Active Grant
First Claim
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1. A method of producing a layer of pressure-sensitive adhesive on a surface of a reclosable pack, the method comprising applying an acrylate polymer having a glass transition temperature<



  • 20°

    C., determined according to ASTM-D 3418/82, comprising 1 to 30 mmol of copolymerized photoinitiator per kg of acrylate polymer, the acrylate polymer comprising, in reacted form, monoethylenically unsaturated monomers M and the photoinitiator, the monomers M comprising;

    a) at least 80% by weight, based on the total weight of the acrylate polymer, of at least one monomer A selected from the group consisting of C3-C20 alkyl acrylates;

    b) 1 to 20% by weight of at least one monomer B selected from the group consisting of C1-C4 alkyl methacrylates, methyl acrylate, and ethyl acrylate;

    c) up to 10% by weight of at least one nonaromatic, monoethylenically unsaturated monomer C, which are selected from the group consisting of monoethylenically unsaturated C3-C8 monocarboxylic acids, amides of monoethylenically unsaturated C3-C8 monocarboxylic acids, monoethylenically unsaturated C4-C8 dicarboxylic acids, mono-C1-C20 alkyl esters of monoethylenically unsaturated C4-C8 dicarboxylic acids, and hydroxyalkyl esters of monoethylenically unsaturated C3-C8 monocarboxylic acids,wherein weight fractions of monomers A, B and C add up to 100% by weight,as a reacted coating component to the surface of the reclosable pack.

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