Patent · US Expired

Alkali metal fluorozincate and method for producing it

US6743409B2 · kind B2 · utility

3Cited by

3References

7Claims

0Family size

Assignee

SOLVAY FLUOR und DERIVATE GmbH · DE

Inventors

Ulrich Seseke-Koyro · Vellmar, DE
Andreas Becker · Celle, DE
Joachim Frehse · Hannover, DE

Key dates

Filing date	Oct 2, 2002
Grant date	Jun 1, 2004
Priority date	—
Expiry date	Oct 16, 2022

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB23K35/3605
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

Novel methods for producing alkali metal fluorozincates, especially potassium fluorozincate. Products having defined particle size ranges are obtained depending on the sequence of introduction of the reactants alkali metal hydroxide, zinc oxide and hydrogen fluoride. The resulting alkali metal fluorozincates are particularly suitable for use as a fluxing agent or fluxing agent additive during brazing of aluminum or aluminum alloys and can be applied by wet or dry fluxing methods depending on the particle size of the alkali metal fluorozincate particles.

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