Process for making a metal-polymer composite having an irradiated polymer coating
US7371432B2 · kind B2 · utility
1Cited by
21References
14Claims
0Family size
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Key dates
| Filing date | Nov 25, 2003 |
| Grant date | May 13, 2008 |
| Priority date | — |
| Expiry date | Sep 1, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A process for making a metal-polymer composites suitable for shaping into container end panels having improved resistance to feathering and angel hair formation. A polymer coating is applied to a metal sheet. The polymer coating includes at least one cured polymer selected from polyolefins, anhydride modified polyolefins, epoxies, and phenoxies. The polymer coating on the composite is then irradiated with an electron beam, thereby scissioning chains in the cured polymer. The metal sheet preferably comprises an aluminum alloy and the polymer coating preferably comprises maleic anhydride modified polyropylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.