The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 17, 2017
Filed:
Nov. 30, 2014
Rohm and Haas Electronic Materials Llc, Marlborough, MA (US);
Koichi Yomogida, Niigata, JP;
Rohm and Haas Electronics Materials LLC, Marlborough, MA (US);
Abstract
To provide a surface treatment solution and treatment method for gold or gold alloy plating that effectively suppresses corrosion of underlying metal or substrate metal from pinholes that develop on the gold or gold alloy plating film. [Solution] A surface treatment solution containing a disulfide compound is brought into contact with a gold or gold alloy plating film. A compound represented by the following formula (2) is preferred as the disulfide compound.XOS—R—S—S—R—SOX  (2)in the formula, Rand Rindependently represent a linear or branched alkylene group having from 1 to 10 carbon atoms, cyclic alkylene group having from 3 to 10 carbon atoms, or phenylene group, Rand Rindependently may be substituted by one or more substituents selected from an alkyl group, halogen atom, hydroxyl group, or alkoxy group, and Xand Xrepresent monovalent cations.