Primer coating of steel

Details Primer coating of steel Primer coating of steel

2001-09-11

2011-11-01

Fletcher, III, William Phillip (Department: 1717)

Compositions: coating or plastic

Coating or plastic compositions

Inorganic materials only containing at least one metal atom

C427S419200

Reexamination Certificate

active

08048215

ABSTRACT:
A process for primer coating steel which is intended to be fabricated and overcoated, in which process the steel is primer coated with a primer coating comprising a silica binder. The binder comprises alumina-stabilized aqueous silica sol and, optionally, a minor amount of alkali metal silicate. The binder has a SiO2/M2O mole ratio, wherein M represents the total of alkali metal and ammonium ions, of at least 6:1. After the primer coating has dried to the extent that it is touch dry, it is optionally treated with a solution which increases the film strength of the primer coating.

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