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US 2013/0053292 A1Published application
Chemical stripping composition and method
AssigneeUnited Technologies Corporation
InventorEric W. Stratton
Life of this patent
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Abstract
A stripping solution comprises a highly corrosive acid and an iron concentration of at least about 1.0 gram per liter (g/L). The stripping solution is air agitated to remove a coating from a metal article submerged therein.
Claims20
A stripping solution comprising:
- a highly corrosive acid;
- and
- an iron concentration of at least about 1.0 gram per liter (g/L).
A method of making a solution for stripping a coating from a metal article, the method comprising:
- adding a highly corrosive acid to a vessel;
- increasing an iron concentration of the highly corrosive acid to at least about 1.0 gram per liter (g/L);
- and
- agitating the solution.
1 more element
A method of removing a coating from a metal article, the method comprising:
- maintaining a stripping solution in a first temperature range, the stripping solution comprising a highly corrosive acid with an iron concentration of at least about 1.0 gram per liter (g/L);
- submerging the metal article into the stripping solution;
- and
- air agitating the solution containing the submerged article.
1 more element
Dependencies are inferred from the claim text.