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Two-part acrylic-urethane adhesive

  • US 20070072992A1
  • Filed: 09/28/2006
  • Published: 03/29/2007
  • Est. Priority Date: 09/28/2005
  • Status: Active Grant
First Claim
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1. A two-component bonding agent composition, comprising:

  • (a) a first component which is an aqueous mixture whose solid portion comprises;

    (i) 0.1 to 10 wt % of a polyol containing at least two hydroxyl groups and being selected from the group consisting of polyether polyols, polyester polyols, polyether polyester polyols and mixtures thereof; and

    (ii) 90 to 99.9% of a polymer having from 20-60% residues of at least one styrene monomer, from 40-80% residues of at least one acrylic monomer having a Tg less than 0°

    C., from 1-4% residues of (meth)acrylic acid and less than 0.5% residues of hydroxyl-containing monomers; and

    (b) a second component comprising a water dispersible polyisocyanate, wherein said second component is present relative to said first component at a molar ratio of NCO/NCO-reactive groups of 1;

    1 to 8;

    1.

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