Patent · US Expired

Palladium electrolyte baths utilizing quaternized pyridine compounds as brighteners

US3972787A · kind A · utility

14Cited by
1References
14Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJun 13, 1975
Grant dateAug 3, 1976
Priority date—
Expiry dateJun 13, 1995

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC25D3/52
  • WIPO fieldSurface technology, coating
  • WIPO sectorChemistry

Abstract

Water soluble quarternized pyridine salts are used in amounts from about 0.001 g/l up to their solubility limit of about 10 g/l in aqueous palladium electrolyte plating baths to greatly enhance brightness even to the point of brilliance.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.