Metal pretreatment composition containing zirconium, copper, and metal chelating agents and related coatings on metal substrates
US10094026B2 · kind B2 · utility
0Cited by
9References
26Claims
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Key dates
| Filing date | Jan 24, 2017 |
| Grant date | Oct 9, 2018 |
| Priority date | — |
| Expiry date | Jan 24, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12778
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Disclosed is a zirconium-based metal pretreatment coating composition that includes a metal chelator that chelates copper in the metal pretreatment coating composition and thereby improves adhesion of paints to a metal substrate coated with the pretreatment coating composition and the chelating agent is present in a sufficient amount to ensure that in the deposited pretreatment coating on the metal substrate the average total atomic % of copper to atomic % of zirconium is equal to or less than 1.1. The pretreatment coating composition is useful for treating a variety of metal substrates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.