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Title: Ductile polyelectrolyte macromolecule-complexed zinc phosphate conversion crystal pre-coatings and topcoatings embodying a laminate

Patent ·
OSTI ID:6634602

A metal lamina is described consisting of a steel and non ferrous metal base and a precoat polymer layer consisting of a zinc phosphating layer modified by a polymer coating of about 20A-40A thickness of a polyelectrolyte selected from the group consisting of polyacrylic acid, polymethacrylic acid, polyitaconic acid, and poly-L-glutamic acid. The precoat polymer layer was applied from a zinc phosphate and polyelectrolyte composition wherein the polyelectrolyte is present in about 0.5-5% by weight and has a molecular weight of about 10,000-300,000.

Assignee:
United States Department of Energy, Washington, DC
Patent Number(s):
US 4659395
OSTI ID:
6634602
Resource Relation:
Patent File Date: Filed date 5 Nov 1985
Country of Publication:
United States
Language:
English