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:
Apr. 26, 1994
Filed:
Jul. 20, 1992
Nicholas M Martyak, Ballwin, MO (US);
Bruce F Monzyk, Maryland Heights, MO (US);
Monsanto Company, St. Louis, MO (US);
Abstract
Phosphorus-containing, crystalline, nickel-coated fabric, wherein said nickel contains 1 to 6 weight percent phosphorus, has crystallites greater than 3 nanometers and has a surface resistivity of less than 1 ohm/square is deposited onto a substrate a surface which is catalytic to electroless deposition of nickel by immersing the substrate into an electroless nickel plating solution consisting essentially of nickel salt, one or more organic acids, hypophosphite reducing agent, thiourea and ammonia and essentially no heavy metal, wherein the concentration of said thiourea is less than 1 ppm, maintained at a pH of 6.5 to 8.5 and a temperature less than 60.degree. C. Preferred plating solutions comprise essentially no lead or cadmium and have a molar ratio of nickel to hypophosphite in said solution is 0.4 to 0.55. Preferred organic acids are selected from the group consisting of lactic acid, acetic acid, propionic acid, pyruvic acid, aspartic acid and glycolic acid.