Ductile polyelectrolyte macromolecule-complexed zinc phosphate conversion crystal pre-coatings and topcoatings embodying a laminate
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/sup 0/C. The polyelectrolyte or the precoat is present in about 0.5 to 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/sup 0/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 x 10/sup 5/ gave improved ductility modulus effect.
- Research Organization:
- Brookhaven National Lab., Upton, NY (USA)
- DOE Contract Number:
- AC02-76CH00016
- Assignee:
- Dept. of Energy
- Patent Number(s):
- None
- Application Number:
- ON: DE87007263
- OSTI ID:
- 6738864
- Country of Publication:
- United States
- Language:
- English
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Ductile polyelectrolyte macromolecule-complexed zinc phosphate conversion crystal pre-coatings and topcoatings embodying a laminate
Ductile polyelectrolyte macromolecule-complexed zinc phosphate conversion crystal pre-coatings and topcoatings embodying a laminate
Related Subjects
360000* -- Materials
ACRYLIC ACID
ALLOYS
BONDING
CARBON STEELS
CARBOXYLIC ACIDS
COATINGS
COMPLEXES
DEPOSITION
DUCTILITY
ELECTROLYTES
ELEMENTS
ESTERS
FABRICATION
FLEXURAL STRENGTH
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MATERIALS
MECHANICAL PROPERTIES
METALS
MOLECULAR WEIGHT
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PLASTICS
PMMA
POLYACRYLATES
POLYAMIDES
POLYMERS
POLYURETHANES
POLYVINYLS
SOLID ELECTROLYTES
STEELS
SURFACE COATING
SYNTHETIC MATERIALS
TENSILE PROPERTIES
ZINC COMPOUNDS
ZINC PHOSPHATES