Patent Number: 6,251,847

Title: Composition and method for cleaning/degreasing metal surfaces, especially composites of copper and aluminum

Abstract: An aqueous liquid composition for cleaning and degreasing metal surfaces consists essentially of water and the following dissolved stably dispersed, or both dissolved and stably dispersed components: A) alkali metal borate salts; B) boric acid in excess of any generated by reaction of anions of component a) with water; C) nonionic surfactant; and D) anionic and/or amphoteric surfactants.

Inventors: Pierce; John R. (Huntington Woods, MI), Carlson; Lawrence R. (Waterford, MI)

Assignee: Henkel Corporation

International Classification: C23G 1/24 (20060101); C11D 1/83 (20060101); C23G 1/00 (20060101); C11D 3/02 (20060101); C11D 11/00 (20060101); C11D 1/37 (20060101); C23G 1/02 (20060101); C11D 1/02 (20060101); C23G 1/10 (20060101); C23G 1/12 (20060101); C11D 1/72 (20060101); C11D 1/34 (20060101); C11D 1/10 (20060101); C11D 1/12 (20060101); C11D 001/86 (); C11D 003/04 (); C11D 007/08 (); B05D 001/00 ()

Expiration Date: 06/26/2018