Patent ID: 7485612
Filing Date: 2009-02-03
Classification: C11D,H01L

Abstract:
1. An electronic parts cleaning solution which is characterized in containing an anionic surfactant, hydroxide, metal corrosion inhibitor, water, and a nonionic surfactant represented by formula (I) and/or a nonionic surfactant represented by formula (II): (EO is an oxyethylene group, and PO is an oxypropylene group. x and y, and a and b are positive numbers, which x/(x+y) and a/(a+b) are 0.05 to 0.5 respectively, and z and c are positive integers. R is a monovalent group of a divalent group of a trivalent group of a tetravalent group of R1 is a hydrocarbon group having C