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Hybrid material of crosslinked microgel particles dispersed in an adhesive

  • US 9,926,470 B2
  • Filed: 10/21/2013
  • Issued: 03/27/2018
  • Est. Priority Date: 10/22/2012
  • Status: Active Grant
First Claim
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1. A pressure sensitive adhesive composition adapted for selective debonding, the pressure sensitive adhesive composition comprising:

  • a continuous first phase comprising a pressure sensitive adhesive matrix; and

    a discontinuous second phase comprising crosslinked silicone gel particles dispersed in the pressure sensitive adhesive matrix with a characteristic such that upon exposure to a liquid debonding agent, the particles undergo a change in at least one of shape and volume;

    wherein the silicone gel particles do not swell or change shape as a result of being exposed to aqueous solutions,wherein the pressure sensitive adhesive matrix includes an acrylic polymer insoluble in the debonding agent.

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