C - Chemistry – Metallurgy – 23 – G
Patent
C - Chemistry, Metallurgy
23
G
C23G 1/22 (2006.01)
Patent
CA 2067112
Title: ALKALINE CLEANER AND PROCESS FOR REDUCING STAIN ON ALUMINUM SURFACES Abstract of the Disclosure An aqueous alkaline cleaner and a process are described for reducing the discoloration of aluminum surfaces treated with are aqueous alkaline cleaner compositions. The process comprises including in the aqueous cleaner composition, an effective amount of at least one heterocyclic compound. Enhanced mobility of the aluminum surfaces also can be obtained when the heterocyclic compound is a solid particulate compound which is mixed with an oil prior to addition to the aqueous alkaline cleaner. In a preferred embodiment, the heterocyclic compounds are soluble pyrroles, imidazoles, pyrazoles, thiazoles or triazoles.
Borden Ladner Gervais Llp
Man-Gill Chemical Company
Ppg Industries Ohio Inc.
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