Patent · US Expired

Process for electrophoretic white and colored enamelling

US4883565A · kind A · utility

0Cited by

4References

4Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Bruno Hees · Langenfeld, DE
Hans-Peter Hoffmann · Dachau, DE

Key dates

Filing date	Feb 24, 1988
Grant date	Nov 28, 1989
Priority date	—
Expiry date	Feb 24, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23D5/02
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An improved method comprises electrophoretic application of enamel to a sheet steel substrate by a two layer/single stoving wherein a first or base enamel layer is applied to the sheet steel and a second white or colored enamel layer is applied to the first layer and the first layer has the following properties: PA0 (a) a coefficient of expansion below 165.times.10.sup.-7 /K at 0.degree. to 100.degree. C., PA0 (b) a surface tension higher than 300 mN/m, PA0 (c) a transformation temperature of from 480.degree. to 520.degree. C., preferably from 490.degree. to 510.degree. C., and PA0 (d) a yield value of 15 to 30.

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