Patent · US Expired

Enamel frits for sheet steel with improved bonding

US4847218A · kind A · utility

7Cited by

0References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Hans-Joachim Schittenhelm · Neunburg vorm Wald, DE
Werner Joseph · Cologne, DE

Key dates

Filing date	Mar 11, 1988
Grant date	Jul 11, 1989
Priority date	—
Expiry date	Mar 11, 2008

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC23D5/04
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An enamel frit which provides improved bonding at stoving temperatures below 800.degree. C. after the frit has been stoved on unalloyed steel which is capable of being enamelled, the frit containing 1 to 6% by weight, based on the total quantity of the frit, of bonding oxides and the other constituents so chosen that the following equation is fulfilled: ##EQU1## in which the deviation from the ratio 1:1:1 is at most .+-.8% for each of the monovalent atoms, divalent atoms and pentavalent atoms. The enamel frits according to the invention being useful for electrostatic powder application.

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