Primer coating composition of a fluorocarbon polymer and an amino alkyl alkoxy silane
AssigneeE. I. Du Pont de Nemours and Company
InventorJoseph A. Vasta
Life of this patent
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Abstract
A primer composition for fluorocarbon polymer coatings which cures at ambient temperatures and contains a fluorocarbon polymer of vinylidene fluoride and hexafluoropropylene and has a weight average molecular weight of about 50,000-300,000; a metallic oxide such as magnesium oxide which is an acid acceptor and an amino alkyl alkoxy silane; preferably, the primer contains a reinforcing pigment such as titanium dioxide; The primer is used in combination with fluorocarbon polymer coatings to provide corrosion and abrasion resistant coatings for equipment used in chemical plants, oil refineries, oil drilling platforms, and for the interior of smoke stacks of large utility companies.
Claims14
A composition consisting essentially of about 10-50% by weight binder and 50-90% by weight organic solvent, wherein the binder consists essentially of
- a fluorocarbon polymer comprising vinylidene fluoride and hexafluorpropylene having a weight average molecular weight of about 50,000-300,000;
- a metallic oxide which is an acid acceptor and
- an amino alkyl alkoxy silane selected from the group consisting of gamma amino propyl trimethoxy silane and gamma amino propyl triethoxy silane.
A two component composition, wherein the two components are mixed together to form a composition consisting essentially of about 10-50% by weight binder and 50-90% by weight organic solvent and wherein the components consisting essentially of
- component (1) a solution of a fluorocarbon polymer consisting essentially of vinylidene fluoride and hexafluoropropylene having a weight average molecular weight of about 50,000-300,000 and a metallic oxide which is an acid acceptor;
- and
- component (2) an amino alkyl alkoxy silane selected from the group consisting of gamma-amino propyl trimethoxy silane and gamma-amino propyl triethoxy silane.
Dependencies are inferred from the claim text.