Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1999-03-24
2000-09-12
Sheehan, John
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
148262, C23C 2200
Patent
active
061172510
ABSTRACT:
An aqueous solution and method for applying the solution to a metal surface form a zinc phosphate coating on the metal surface. The zinc phosphate coating minimizes corrosion and improves adhesion of subsequently coated materials such as sealants and paints. The solution of the composition and method of application consume free acidity otherwise left on the metal surface, and obviate the need for subsequent rinsing or extensive drying or stoving operations. The composition includes an aqueous solution including water, zinc dihydrogen phosphate, phosphoric acid, a polyhydric polymer, a metal salt, and optionally, a fluoride.
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Bulk Chemicals, Inc.
Oltmans Andrew L.
Sheehan John
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