This invention relates to a corrosion-resistant coating capable of being lied to various substrates, e.g., particularly metal and plastic surfaces, as a single coat characterized as having a high-gloss, good adhesion and a high degree of flexibility. The corrosion inhibiting composition comprises an epoxide resin containing an effective amount of a corrosion-inhibiting pigment system consisting essentially of critical amounts of at least one zinc phosphate, zinc molybdate and at least one zinc salt of a benzoic acid.
CONTINUATION APPLICATIONS
This application is a continuation-in-part of copending application Ser. No. 07/442,085 pending filed on Nov. 28, 1989 which in turn is a continuation-in-part of copending application Ser. No. 07/331,200 filed March 28, 1989 now U.S. Pat. No. 4,885,324 which in turn is a continuation of application 07/211,026 filed June 16, 1988, now abandoned.
USPTO Field of Search
523/451
523/456
523/459
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5491185 - Epoxy self-priming topcoats - Owned by The United States of America as represented by the Secretary of the Navy (Washington, DC) [*] Notice:The portion of the term of this patent subsequent to April 13, 2010 has been disclaimed.
A corrosion-resistant coating which can be applied directly to a surface as self-priming topcoat comprising an epoxy resin binder and a combination of pigments consisting essentially of an aluminum triphosphate, zinc salts of benzoic acids, and an alkaline earth metal phosphate such as zinc-barium phosphate. In addition, the coating contains up to about 30 parts by weight of a titanium dioxide pigment, up to about 2.0 parts by weight of an oil soluble surface active agent and up to about 50 parts by weight of at least one organic paint solvent.
A waterborne epoxy corrosion resistant primer comprises a waterborne epoxy, a curing agent, and a non-chromate containing corrosion-inhibiting pigment.
Flame retardant molding compositions that are substantially free of halogen, phosphorus, and antimony are disclosed. Also disclosed are the use of these flame retardant molding compositions to coat electronic devices such as integrated circuits.
A corrosion and crack growth inhibitor is disclosed, the inhibitor being relatively non-toxic as well as unreactive with curable elastomeric materials so as to form a coating composition for application to metal surfaces. The inhibitor comprises a curable polymer material, such as epoxy polyamide, and cerous molybdate in the amount of from about 1 to 15 percent by weight of the inhibitor.
Flame retardant molding compositions that are substantially free of halogen, phosphorus, and antimony are disclosed. Also disclosed is the use of these flame retardant molding compositions to coat electronic devices such as integrated circuits. The flame retardant molding compositions include an epoxy resin; a first transition metal oxide containing a refractory metal, such as tungsten trioxide; and a second transition metal oxide containing an oxyanion of a Group VIA element and a cation of a Group IIA element, such as calcium molybdate.
