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Bonding adhesive and adhered roofing systems prepared using the same

  • US 10,550,575 B2
  • Filed: 08/02/2016
  • Issued: 02/04/2020
  • Est. Priority Date: 03/15/2013
  • Status: Active Grant
First Claim
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1. An adhered membrane roof system comprising:

  • a roof substrate;

    a polymeric membrane comprising EPDM; and

    an adhesive layer disposed between the roof substrate and the polymeric membrane that is adhered directly to the polymeric membrane, where there is no fleece or other backing layer between the roof substrate and the polymeric membrane, said adhesive layer being formed from a bond adhesive composition comprising;

    a polymer having a silicon-containing hydrolysable terminal group and from about 1 to about 30 wt. % of a C9 aromatic hydrocarbon tackifying resin, where the bond adhesive composition is devoid of phenolic resin, where the hydrocarbon tackifying resin is characterized by a softening point of from 90 to about 140°

    C., and a number average molecular weight of from about 300 to about 3000 g/mole.

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