Patent · US Expired

Concentration of volatile compounds from solid or liquid material

US4846935A · kind A · utility

8Cited by

9References

7Claims

0Family size

Assignee

Degussa AG · DE

Inventors

Gunter Giesselmann · Heusenstamm, DE
Andreas Hartmann · Stadtbergen, DE
Karl-Heinz Bruckner · Mömbris, DE

Key dates

Filing date	Apr 30, 1987
Grant date	Jul 11, 1989
Priority date	—
Expiry date	Apr 30, 2007

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01D5/0081
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A heavy concentration of volatile substances and high degree of purity are achieved in a short time in a closed system by transferring the volatile substances from a vessel containing the gas phase into a condensation vessel by means of a capillary with a small inner diameter. Preferably there is a temperature drop from the vessel containing the gas phase to the condensation vessel.

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