Coating processes – With post-treatment of coating or coating material – Heating or drying
Patent
1991-12-20
1993-09-07
McFarlane, Anthony
Coating processes
With post-treatment of coating or coating material
Heating or drying
4273837, 427387, 4273881, 427404, 148250, 148251, 148253, 148258, 106 1412, 106 1413, 106 1415, B05D 310
Patent
active
052427145
ABSTRACT:
A process for forming a chromium/silica/phosphate protective conversion coating on a metal surface is improved by pretreating the surface with a composition comprising at least one of (i) H.sub.2 TiF.sub.6, (ii) H.sub.2 SiF.sub.6, and (iii) a derivative of poly{alkenylphenol} before applying the conversion coating. The process of the invention results in a protective base coating having superior adhesion to paint at a relatively high coating weight which is desirable for improved corrosion resistance. This process is especially useful in forming such protective conversion coatings on continuous cast aluminum surfaces.
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Steele Duane C.
Strickland William C.
Henkel Corporation
Jaeschke Wayne C.
McFarlane Anthony
Szoke Ernest G.
Wisdom, Jr. Norvell E.
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