Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1995-03-14
1995-12-05
Silverberg, Sam
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
148247, C23C 2283
Patent
active
054725232
ABSTRACT:
A final seal rinse or pre-treatment for improving the adhesion and corrosion protection afforded by application of organic coatings to metallic substrates, with the seal rinse comprising an aqueous solution of comprising an effective concentration of (2-benzothiazolylthio) succinic acid and morpholine. The formulation, in a working solution, provides a treatment process which increases the corrosion protection of painted metallic parts, particularly ferrous parts, to an extent previously offered by chromated seal rinses. The seal rinse of the present invention is compatible with fresh water from conventional sources, and is also adapted for use with deionized water including a final deionized water post-rinse. In addition, the formulation of the present invention is particularly adapted for use with materials previously treated with phosphate. A working formulation of the present invention includes (2-benzothiazolylthio) succinic acid and morpholine in an effective concentration wherein the weight ratio of the succinic acid derivative to morpholine ranges from between about 1:0.5 and 1:1, and wherein the pH is between 6 and 10.
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Fremont Industries, Inc.
Silverberg Sam
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