US 12,187,986 B2
Cleaning solution and methods of cleaning a turbine engine
Nicole Jessica Tibbetts, Delanson, NY (US); Evan J. Dolley, Niskayuna, NY (US); Bernard Patrick Bewlay, Niskayuna, NY (US); Denise Anne Anderson, Mechanicville, NY (US); Nathan David McLean, Glenville, NY (US); Eric John Telfeyan, Delanson, NY (US); and Frank Wagenbaugh, Leeds, NY (US)
Assigned to General Electric Company, Evendale, OH (US)
Filed by General Electric Company, Schenectady, NY (US)
Filed on Oct. 25, 2023, as Appl. No. 18/383,705.
Application 15/936,318 is a division of application No. 14/874,924, filed on Oct. 5, 2015, granted, now 9,926,517, issued on Mar. 27, 2018.
Application 18/383,705 is a continuation of application No. 15/936,318, filed on Mar. 26, 2018, granted, now 11,834,632.
Application 14/874,924 is a continuation in part of application No. 14/484,897, filed on Sep. 12, 2014, abandoned.
Claims priority of provisional application 61/913,805, filed on Dec. 9, 2013.
Prior Publication US 2024/0060010 A1, Feb. 22, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. C11D 3/20 (2006.01); B08B 3/08 (2006.01); C11D 1/72 (2006.01); C11D 1/83 (2006.01); C11D 1/88 (2006.01); C11D 1/94 (2006.01); C11D 3/30 (2006.01); C11D 3/34 (2006.01); C23G 1/02 (2006.01); C23G 1/06 (2006.01); C23G 1/08 (2006.01); F01D 25/00 (2006.01)
CPC C11D 3/2086 (2013.01) [B08B 3/08 (2013.01); C11D 1/83 (2013.01); C11D 1/94 (2013.01); C11D 3/2075 (2013.01); C11D 3/30 (2013.01); C11D 3/3409 (2013.01); C23G 1/02 (2013.01); C23G 1/061 (2013.01); C23G 1/088 (2013.01); F01D 25/002 (2013.01); C11D 1/72 (2013.01); C11D 1/88 (2013.01); C11D 2111/20 (2024.01); Y02T 50/60 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A cleaning solution for an in-situ aircraft turbine engine, the cleaning solution comprising:
at least a first organic acidic component within a range between about 0.1 percent and about 15 percent of the cleaning solution;
isopropylamine sulphonate within a range between about 0.07 percent and 0.14 weight percent of the cleaning solution;
alcohol ethoxylate within a range between about 0.035 percent and 0.07 weight percent of the cleaning solution;
0.3 weight percent monosodium-N-lauryl-B-iminodipropionic acid; and
an organic base that was added by weight to tritate the cleaning solution to a pH within a range of 2.5 to 7.0.