Patent ID: 9040473
Filing Date: 2015-05-26
Classification: C11D

Abstract:
1. A detergent for cleaning media, comprising: water; between about 1% and about 5% by weight of a nonionic surfactant having an hydrophile/lipophile balance (HLB) value between about 10 and about 20, and an ethoxylation level between about 5 and about 20, wherein the nonionic surfactant is amine-free and comprises a surfactant having the chemical formula R—(OCH between about 1% and about 5% by weight of a dispersing agent; between about 3% and about 10% by weight of a chelating agent comprising phosphonic acid; and between about 2% and about 6% by weight of an inorganic salt, wherein the detergent is substantially free of amine compounds and substantially free of anionic and cationic surfactants, and has a pH level of greater than 11, and wherein the chelating agent comprises hydroxyethylene diphosphonic acid (HEDP).