Elastic one-part structural adhesive tape
Assignee3M Innovative Properties Company
InventorsAdrian T. Jung, Boris Tasch
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Abstract
The present disclosure relates generally to the field of adhesives, more specifically to the field of structural adhesive tapes, in particular for use in bonding metal parts. The present disclosure also relates to a method of bonding two parts and to a composite article. The present disclosure is further directed to the use of a structural adhesive tape for industrial applications, such as construction and automotive applications, in particular for body-in-white bonding applications in the automotive industry.
Claims15
An adhesive tape, comprising a partially cured precursor of an hybrid structural adhesive composition, the composition comprising:
- a polymeric material comprising the self-polymerization reaction product of a polymerizable material comprising a cationically self-polymerizable monomer;
- wherein the polymeric material comprises or consists of a polyetherimine;
- wherein the cationically self-polymerizable monomer is a polyfunctional compound comprising at least one cyclic amine;
- optionally, some residual polymerization initiator of the cationically self-polymerizable monomer which is initiated at a temperature T1;
- a curable monomer which is different from the cationically self-polymerizable monomer;
- wherein the curable monomer which is different from the cationically self-polymerizable monomer comprises at least one functional group selected from the group consisting of epoxy groups;
- and
- a curing initiator of the curable monomer which is initiated at a temperature T2 and which is different from the polymerization initiator of the cationically self-polymerizable monomer, and
- wherein the curable monomers are substantially uncured and are in particular embedded into the polymeric material comprising the self-polymerization reaction product of a polymerizable material comprising a cationically self-polymerizable monomer.
Dependencies are inferred from the claim text.