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

Patent · Tue Apr 21 00:00:00 EDT 1987

OSTI ID:7249373

Sugama, T; Kukacka, L E; Carciello, N R

This invention relates to a precoat, laminate, and method for ductile coatings on steel and non-ferrous metals which comprises applying a zinc phosphating coating solution modified by a solid polyelectrolyte selected from polyacrylic acid (PAA), polymethacrylic acid (PMA), polyitaconic acid (PIA), and poly-L-glutamic acid. The contacting of the resin with the phosphating solution is made for a period of up to 20 hours at about 80 C. The polyelectrolyte or the precoat is present in about 0.5--5.0% by weight of the total precoat composition and after application, the precoat base is dried for up to 5 hours at about 150 C to desiccate. Also, a laminate may be formed where polyurethane (PU) is applied as an elastomeric topcoating or polyfuran resin is applied as a glassy topcoating. It has been found that the use of PAA at a molecular weight of about 2 [times] 10[sup 5] gave improved ductility modulus effect. 5 figs.

• DOE Contract Number: AC02-76CH00016
• Assignee: Dept. of Energy, Washington, DC (United States)
• Patent Number(s): US 4659395; A
• Application Number: PPN: US 6-795141
• OSTI ID: 7249373
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
360601 -- Other Materials-- Preparation & Manufacture
ALLOYS
CHEMICAL COATING
COATINGS
COMPOSITE MATERIALS
DEPOSITION
DUCTILITY
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS
MECHANICAL PROPERTIES
METALS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PLASTICS
POLYAMIDES
POLYMERS
POLYURETHANES
STEELS
SURFACE COATING
SYNTHETIC MATERIALS
TENSILE PROPERTIES
ZINC COMPOUNDS
ZINC PHOSPHATES