Post treatment of phosphated metal surfaces by organic titanates
First Claim
1. A method of treating phosphated metal surfaces to improve the adhesion of siccative organic coatings thereto which comprises treating a phosphated metal surface with an aqueous solution of a water-soluble organic titanium chelate which forms a water-insoluble deposit on the phosphated metal surface.
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Accused Products
Abstract
A method of treating phosphated metal surfaces to improve the corrosion-inhibiting properties of the metal surfaces and to improve the adhesion of siccative organic coatings thereto is described. The method comprises treating a phosphated metal surface with an aqueous solution of a water-soluble organic titanium chelate which forms a water-insoluble deposit on the phosphated metal surface. Preferably, the water-soluble organic titanium chelate compound is TYZOR CLA, TYZOR 131 OR TYZOR 101. Optionally, though not required, the titanium chelate treated phosphated metal surfaces can be rinsed with water prior to the application of a siccative organic coating. In lieu of, or in addition to, the siccative organic coating, the titanium chelate treated, phosphated metal surfaces can be given a seal coating of a rust-inhibiting oil. Metal surfaces and metal articles treated in accordance with the method of the present invention also are described.
29 Citations
19 Claims
- 1. A method of treating phosphated metal surfaces to improve the adhesion of siccative organic coatings thereto which comprises treating a phosphated metal surface with an aqueous solution of a water-soluble organic titanium chelate which forms a water-insoluble deposit on the phosphated metal surface.
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5. A method of treating phosphated metal surfaces to provide a durable rust-inhibiting coating comprising the steps of
(a) treating a phosphated metal surface with an aqueous solution of a water-soluble organic titanium chelate which forms a water-insoluble titanium deposit on the phosphated metal surface, and (b) depositing on the titanium chelate treated phosphated metal surface, (i) a siccative organic coating, or (ii) a corrosion-inhibiting film of oil, or (iii) a siccative organic coating followed by a corrosion-inhibiting film of oil.
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10. A method of treating phosphated metal articles to provide a corrosion-inhibiting coating which comprises the steps of
(a) treating a phosphated metal article with an aqueous solution of a water-soluble organic titanium chelate which forms a water-insoluble titanium deposit on the phosphated metal article, and (b) applying a corrosion inhibiting film of oil as a seal coat.
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13. A method of treating phosphated metal articles to provide a corrosion-inhibiting coating comprising the steps of
(a) treating a phosphated metal article with an aqueous solution of a water-soluble organic titanium chelate which forms a water-insoluble titanium deposit on the phosphated metal article, and (b) depositing a siccative organic coating on the titanium treated phosphated metal article.
Specification