Stock material or miscellaneous articles – Composite – Of quartz or glass
Reexamination Certificate
2006-02-21
2006-02-21
Brunsman, David (Department: 1755)
Stock material or miscellaneous articles
Composite
Of quartz or glass
C106S287100, C106S287110, C106S287130, C106S287140, C106S287150, C106S404000
Reexamination Certificate
active
07001666
ABSTRACT:
A surface treatment, especially for titanium and aluminum alloys, forms a pigmented sol-gel film covalently bonded on the metal surface to produce desired color, gloss, reflectivity, electrical conductivity, emissivity, or a combination thereof usable over a wide temperature range. The coating retains its characteristics and impact resistance following exposures to temperatures at least in the range from −321° F. to 750° F. An aqueous sol containing an alkoxyzirconium and an organosilane with an organic acid catalyst and zirconium stabilizer is applied to etched or grit blasted substrates by dipping, spraying, or drenching, to produce bonds in a single application comparable in strength and performance to standard anodize controls. Parameters affecting performance include the sol composition, the Si/Zr ratio, the ratio of sol ingredients, the concentration of the sol, the carrier solvent, solution age, catalysts, surface pretreatment, application method, curing process, and primer used. The sol-gel coating may be graded in its ceramic character by adjusting the organosilane component between TEOS and silanes that have more distinctive organic character by virtue of organic ligands attached to the silicon.
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Blohowiak Kay Y.
Krienke Kenneth A.
Olli Larry K.
Osborne Joseph H.
Brunsman David
Hammar John C.
The Boeing Company
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