Acid removal in cleaning processes

Details Acid removal in cleaning processes Acid removal in cleaning processes

2009-06-30

2011-10-04

Carrillo, Bibi (Department: 1711)

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

C134S002000, C134S003000, C134S012000, C134S026000, C134S027000, C134S028000, C134S030000, C134S034000, C134S035000, C134S036000, C134S041000, C134S042000, C210S681000, C210S685000

Reexamination Certificate

active

08029623

ABSTRACT:
Embodiments of the present disclosure include cleaning processes, cleaning machines, and methods of preventing acidification of a cleaning composition in a cleaning process. The cleaning process includes contacting an article having contaminants with a cleaning composition to remove the contaminants from the article, where the cleaning composition comes to have acidic components as a result of contacting the article with the cleaning composition, and where at least 85 percent by weight, based on a total weight of the cleaning composition, of the cleaning composition is an organic solvent, collecting the cleaning composition with the contaminants and the acidic components, separating the contaminants from the cleaning composition (114), and passing the cleaning composition with the acidic components over an ion exchange resin (125) to remove the acidic components from the cleaning composition.

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