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:
Sep. 24, 1996
Filed:
Feb. 21, 1995
Applicant:
Inventors:
Francis R Cala, Highland Park, NJ (US);
Richard A Reynolds, Plainsboro, NJ (US);
Assignee:
Church & Dwight Co., Inc., Princeton, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B08B / ; B08B / ; C11D / ; C11D / ;
U.S. Cl.
CPC ...
134 42 ; 134-2 ; 134 40 ; 510175 ; 510176 ;
Abstract
A cleaning composition for removing water soluble flux residues from circuit assemblies comprises a surfactant formulation containing three nonionic surfactants which have cloud points which differ by at least 5.degree. F. from each other so as to provide optimum cleaning performance over a broadened temperature range. The surfactant formulation is preferably in the form of an aqueous concentrate which further contains alkaline salts, a corrosion inhibitor, a carboxylated polymer stabilizer to maintain the corrosion inhibitor in solution and a hydrotrope to maintain the surfactants in solution.