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:
Nov. 23, 1982
Filed:
Jan. 21, 1981
William A Cuddy, Montague, NJ (US);
Basil Thir, Grosse Ile, MI (US);
Stephen E Eisenstein, Oak Park, MI (US);
BASF Wyandotte Corporation, Wyandotte, MI (US);
Abstract
The present invention relates to a method of wave soldering an assembly composed of a plurality of electrical conductors disposed on a surface of a sheet of insulating material. In accordance with this method, the surface of the sheet and the conductors are contacted with a stationary wave of molten solder having a polyether admixed therewith and floating on the surface thereof. The polyether is a heteric or block copolymer of a dihydroxyphenol and at least one lower alkylene oxide. It is preferred that the alkylene oxide contain 2 to 4 carbon atoms. The alkylene oxide may be all ethylene oxide or may be a mixture with other lower alkylene oxides such as propylene oxides and butylene oxides. In any event, the copolymer should contain at least about 20 percent by weight of oxyethylene groups, balance oxypropylene groups and/or oxybutylene groups. A conventional polymeric oxidation inhibitor may also be included.