Corrosion inhibitors in adhesive bonding of vehicle body structures
US8101036B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 8, 2007 |
| Grant date | Jan 24, 2012 |
| Priority date | — |
| Expiry date | Oct 28, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/2984
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
In an illustrative embodiment, two panels of different materials may be bonded with a structural adhesive composition comprising microcapsules containing corrosion inhibiting materials for protecting the panels from corrosion. For example, a steel vehicle door outer panel may be bonded to an aluminum alloy or magnesium alloy inner panel using an epoxy adhesive. Dispersed within the uncured adhesive are an abundance of microcapsules filled with a fluid or mobile material for reacting with the iron and/or aluminum or magnesium to inhibit corrosion arising from the facing surfaces of the mixed metal panels. The protective material is released from the microcapsules for diffusion through the cured or uncured interfacial adhesive to react with one or both panel surfaces and form a protective coating on the surfaces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.