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Pressure sensitive adhesives having quaternary ammonium functionality, articles, and methods

  • US 20030175503A1
  • Filed: 01/16/2002
  • Published: 09/18/2003
  • Est. Priority Date: 01/16/2002
  • Status: Active Grant
First Claim
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1. A pressure sensitive adhesive composition comprising a pressure sensitive adhesive polymer comprising:

  • at least one copolymerized monoethylenically unsaturated (meth)acrylic acid ester monomer, wherein the (meth)acrylic acid ester monomer, when homopolymerized, has a Tg of less than about 25°

    C.; and

    at least one copolymerized monoethylenically unsaturated reinforcing monomer, wherein the reinforcing monomer, when homopolymerized, has a Tg of at least about 25°

    C.;

    wherein the pressure sensitive adhesive polymer includes covalently bonded quaternary ammonium functionality.

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