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Thermosettable compositions useful for producing structural adhesive foams

  • US 20050043420A1
  • Filed: 09/20/2004
  • Published: 02/24/2005
  • Est. Priority Date: 04/27/2001
  • Status: Abandoned Application
First Claim
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1. A storage-stable one-part expandable thermosettable composition useful for producing a structural adhesive foam comprising:

  • (a) at least one adduct of at least one isocyanate resin and at least one epoxy resin bearing at least one isocyanate-reactive functional group per molecule;

    (b) one or more blowing agents, wherein said blowing agents are latent blowing agents which are only activated upon heating to an elevated temperature but which remain inactive at normal storage temperatures; and

    (c) one or more epoxy curatives, wherein said epoxy curatives are latent curatives that activate only upon heating to an elevated temperature but which do not catalyze curing of the thermosettable composition to any significant extent at normal storage temperatures.

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