Patent · US Active

Method and device for producing nanoparticles

US7736553B2 · kind B2 · utility

2Cited by

2References

28Claims

0Family size

Assignee

BASF SE

Inventors

Joerg Halpap · Speyer, DE
Richard van Gelder · Heerlen, NL
Bernd Sachweh · Meckenheim, DE
Siegfried Welker · Hettenleidelheim, DE
Norbert Wagner · Heusenstamm, DE
Andreas Marquard · Karlsruhe, DE
Gerhard Kasper · Downers Grove, US

Key dates

Filing date	Jul 8, 2005
Grant date	Jun 15, 2010
Priority date	—
Expiry date	Oct 14, 2027

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B67/0005
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The invention relates to processes for producing nanoparticles, especially pigment particles, comprising the following steps: i) bringing a base substance (1) into the gas phase, ii) generating particles by cooling or reacting the gaseous base substance (1), and iii) applying electrical charge to the particles during particle generation in step ii) in a nanoparticle generation apparatus. The invention further relates to apparatus for producing nanoparticles, having a feed line (28) for transporting the gas stream (29) into the apparatus, a particle generation and charging area for substantially simultaneous generation and charging of nanoparticles, and a takeoff line (30) for transporting the charged nanoparticles from the particle generation and charging area.

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