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. 20, 1977
Filed:
Oct. 26, 1976
William E Rosenberg, Strongsville, OH (US);
Columbia Chemical Corporation, Cleveland, OH (US);
Abstract
A zinc brightener additive comprises a polymeric amine selected from the class consisting of a linear aliphatic amine polymer, an aminated polyepichlorohydrin, a polyethylenimine, and combinations thereof, and a propylene oxide-ethylene oxide block copolymer prepared by the sequential addition of propylene oxide followed by ethylene oxide, or vice versa, to a residue of an organic compound containing active hydrogen atoms such as propylene glycol or an amine base. Additionally, an aqueous acid electroplating bath containing the polymeric amine compound in combination with the propylene oxide-ethylene oxide and block copolymer provides bright, lustrous electrodepositions of zinc. Moreover, aromatic aldehydes and ketones may be utilized to provide extremely bright electrodepositions of zinc.