Patent · US Expired

Process for electrostatically spraying inorganic powders

US4659586A · kind A · utility

3Cited by

2References

3Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

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

Key dates

Filing date	Oct 16, 1985
Grant date	Apr 21, 1987
Priority date	—
Expiry date	Oct 16, 2005

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB05D2202/00
WIPO fieldSurface technology, coating
WIPO sectorChemistry

Abstract

In the electrostatic spraying on metal substrates of mixtures of different inorganic powders which differ in density, particle size and electrical resistance, the improvement which comprises first forming uniform agglomerates as the different powders, and then spraying the uniform agglomerates. This prevents color variation due to separation of different powders.

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