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US 11,028,220 B2Granted
Relating to structural adhesives
AssigneeZephyros, Inc.
InventorsIra Miller, Michael Czaplicki
Life of this patent
Estimating the term…
Abstract
The invention relates to structural adhesives and in particular to structural adhesives which are heat activated and which can be used for the bonding of components, particularly metal components, employed in the automotive industry.
Claims19
An adhesive for providing corrosion resistance to a substrate to which the adhesive is adhered, the adhesive comprising:
- a) from about 25% to about 50%, by weight of the adhesive, epoxy resin with about 25% to about 75%, by weight of the epoxy resin, being high molecular weight resin, the high molecular weight resin including a phenoxy resin;
- b) from about 10% to about 25%, by weight of the adhesive, core/shell impact modifier;
- and
- c) from about 0.5% to about 10%, by weight of the adhesive, curing agent;
- wherein the adhesive is reformable from about 60° C. to about 120° C., and wherein the adhesive is curable from about 125° C. to about 230° C.;
- wherein a temperature range in which GI>GII is from about 10° C. to about 50° C.;
- wherein a temperature range in which GII>GI is from about 80° C. to about 120° C.;
- wherein the adhesive is free from crosslinking below 125° C.;
- wherein the epoxy resin comprises a solid epoxy resin and a liquid epoxy resin;
- and
- wherein a ratio of the solid epoxy resin to the epoxy resin is from about 1:9 to about 1:16, by weight.
8 more elements
Dependencies are inferred from the claim text.