Acidic tinplating process and process for producing an iron-tin alloy on the surface of a steel sheet
US4388158A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1981 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Jun 25, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC25D3/30
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
An acidic tinplating electrolyte containing at least one sulfate selected from the sulfates of alkaline metals, ammonium, aluminum, manganese or chromium and an ethoxylated .alpha.-naphthol sulfonic acid in a known stannous sulfate or stannous phenolsulfonate electrolyte. This acidic tinplating electrolyte is suitable as a preplating electrolyte for a tinplate in which excellent corrosion resistance is required and also as an electrolyte for the production of a steel sheet having an extremely thin tin layer or an extremely thin iron-tin alloy layer, as a very dense and uniform tin layer is formed on the steel sheet by using the electrolyte of this invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.