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Pressure sensitive adhesive composition and sheet having layer thereof

  • US 5,955,512 A
  • Filed: 04/24/1997
  • Issued: 09/21/1999
  • Est. Priority Date: 04/26/1996
  • Status: Expired due to Term
First Claim
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1. A pressure sensitive adhesive composition, comprising:

  • an acrylic copolymer (A) having a molecular weight of at least 200,000;

    an energy beam polymerizable urethane acrylate oligomer (B); and

    an energy beam polymerizable compound having one acryloyl group or methacryloyl group in each molecule thereof (C), wherein the composition is tacky before an energy beam irradiation and the composition becomes non-tacky after the energy beam irradiation.

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