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US 8,007,576 B2Granted
Chrome-free corrosion inhibitor composition
AssigneeYa Thai Chemical Co., Ltd.
InventorsJyh-Rong Liang, Po-Ya Hsu, Ming-Chuan Wang, Chia-Chih Ou, Wen-Chieh Lin, I-Lin Cheng
Life of this patent
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Abstract
A chrome-free corrosion inhibitor composition includes: titanium chloride; a stabilizer including a mixture of hydrogen peroxide and at least a compound selected from nitric acid, persulfate, nitrate, and chlorate; and a film-forming enhancer selected from monosaccharide, oligosaccharide, polysaccharide, derivatives of saccharide, and combinations thereof.
Claims34
A chrome-free corrosion inhibitor composition comprising:
- titanium chloride;
- a stabilizer including a mixture of hydrogen peroxide and at least a compound selected from the group consisting of nitric acid, persulfate, nitrate, and chlorate;
- and
- a film-forming enhancer selected from the group consisting of monosaccharide, oligosaccharide, polysaccharide, derivatives of saccharide, and combinations thereof.
1 more element
A metal article comprising:
- a metal substrate;
- and
- a protective coating coated on said metal substrate and made from a chrome-free corrosion inhibitor composition that includes:
- titanium chloride;
- a stabilizer including a mixture of hydrogen peroxide and at least a compound selected from the group consisting of nitric acid, persulfate, nitrate, and chlorate;
- and a film-forming enhancer selected from the group consisting of monosaccharide, oligosaccharide, polysaccharide, derivatives of saccharide, and combinations thereof.
3 more elements
A method for forming a protective coating on a metal substrate, comprising:
- (a) applying a chrome-free corrosion inhibitor composition on the metal substrate, the chrome-free corrosion inhibitor composition comprising:
- titanium chloride;
- a stabilizer including a mixture of hydrogen peroxide and at least a compound selected from the group consisting of nitric acid, persulfate, nitrate, and chlorate;
- and a film-forming enhancer selected from the group consisting of monosaccharide, oligosaccharide, polysaccharide, derivatives of saccharide, and combinations thereof;
- and
- (b) baking the chrome-free corrosion inhibitor composition on the metal substrate so as to form the protective coating on the metal substrate.
3 more elements
Dependencies are inferred from the claim text.