Buffered acid cleaner and method of production
OwnerStephen Perryinventor
Life of this patent
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Abstract
A composition for cleaning oxide discoloration, rust, and high temperature-related scale from stainless steel and other metals. The composition comprises a nitrogen acid salt produced by the mixture of urea and an acid and a gelling agent. The preferred nitrogen acid salt used in the composition is urea hydrochloride, which is a buffered acid cleaner. Synthetic smectite clay is the preferred thixotropic gelling agent. Both of these ingredients are non-hazardous and do not produce any toxic or corrosive fumes. The invention also includes the method of preparing the composition.
Claims18
A composition that is a buffered acid cleaner for cleaning oxide discoloration, rust, and high temperature-related scale from stainless steel and other metals comprising:
- a nitrogen acid salt produced by the mixture of urea and an acid;
- and
- a gelling agent.
A method for preparing a buffered acid cleaner for cleaning oxide discoloration, rust, and high temperature-related scale from stainless steel and other metals, said method comprising the following steps:
- at a temperature range of 65 to 80 degrees Fahrenheit, but preferably at 72 degrees Fahrenheit, add prilled urea (35 parts) slowly with mixing to muriatic acid (65 parts of 20 degree baume HCl (31.45% minimum and 32.5% average by weight));
- and
- add synthetic smectite clay to the buffered acid cleaner mixture.
A method for preparing a buffered acid cleaner for cleaning oxide discoloration, rust, and high temperature-related scale from stainless steel and other metals, said method comprising the following steps:
- at a temperature range of 65 to 80 degrees Fahrenheit, but preferably at 72 degrees Fahrenheit, add prilled urea (35 parts) slowly with mixing to muriatic acid (130 parts of 20 degree baume HCl (31.45% minimum and 32.5% average by weight)) to form the buffered acid cleaner;
- and
- add synthetic smectite clay to the buffered acid cleaner mixture.
Dependencies are inferred from the claim text.