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US 6,310,022 B1Granted
Chemical cleaning solution for gas turbine blades
AssigneeBioGenesis Enterprises, Inc.
InventorMohsen C. Amiran
Life of this patent
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Abstract
The invention is directed to a chemical cleaning composition containing a hydroxylated wetting agent, a chelating agent, an emulsifier, optionally a crown ether, and optionally a non-aromatic solvent. The cleaning composition is 100% biodegradable, water-based, and able to remove adhered particles having a particle size of less than 35 micrometers. The invention also relates to a process for cleaning a substrate such as a gas turbine engine.
Claims25
A composition comprising:
- about 10% to about 60% by weight of a hydroxylated wetting agent, wherein said hydroxylated wetting agent is one or more selected from the group consisting of polypropylene glycol, polyethylene glycol, glycerine, ethylene glycol, and propylene glycol;
- about 20% to about 40% by weight of a chelating agent;
- about 1% to about 45% by weight of an emulsifier;
- and
- about 0.01% to about 2% by weight of a crown ether wherein all % by weight values are based on the total weight of the composition.
2 more elements
Dependencies are inferred from the claim text.