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Pressure-Sensitive Adhesives with High Molar Masses and Narrow Molar Mass Distribution and Process for Preparing them

  • US 20130165606A1
  • Filed: 12/19/2012
  • Published: 06/27/2013
  • Est. Priority Date: 12/21/2011
  • Status: Active Grant
First Claim
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1. A process for preparing pressure-sensitive adhesives, by carrying out a controlled radical polymerization reaction of an initial reaction charge, comprising one or more monomers in the presence of at least one radical initiator for preparing at least one polymer, characterized in that use is made as radical initiator of at least one cyclic 1,4-diradical which is generated by means of a cyclization reaction from a compound which has at least two unsaturated C—

  • C bonds (“

    diradical-forming compound”

    ), the polymerization reaction being carried out in the presence of at least one chain transfer agent (“

    polymerization regulator”

    ).

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