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

Patent ·
OSTI ID:6738864
; ;

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 Laboratory (BNL), Upton, NY (United States)
DOE Contract Number:
AC02-76CH00016
Assignee:
Dept. of Energy
Application Number:
ON: DE87007263
OSTI ID:
6738864
Resource Relation:
Other Information: Paper copy only, copy does not permit microfiche production
Country of Publication:
United States
Language:
English

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Related Subjects

36 MATERIALS SCIENCE
CARBON STEELS
SURFACE COATING
COATINGS
DEPOSITION
DUCTILITY
METALS
ACRYLIC ACID
BONDING
COMPLEXES
FLEXURAL STRENGTH
MOLECULAR WEIGHT
PMMA
POLYMERS
POLYURETHANES
SOLID ELECTROLYTES
ZINC PHOSPHATES
ALLOYS
CARBOXYLIC ACIDS
ELECTROLYTES
ELEMENTS
ESTERS
FABRICATION
IRON ALLOYS
IRON BASE ALLOYS
JOINING
MATERIALS
MECHANICAL PROPERTIES
MONOCARBOXYLIC ACIDS
ORGANIC ACIDS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
OXYGEN COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PHOSPHATES
PHOSPHORUS COMPOUNDS
PLASTICS
POLYACRYLATES
POLYAMIDES
POLYVINYLS
STEELS
SYNTHETIC MATERIALS
TENSILE PROPERTIES
ZINC COMPOUNDS
360000* - Materials