Patent · US Active

Process for preparing pseudoionone

US8921605B2 · kind B2 · utility

0Cited by

1References

1Claims

0Family size

Assignee

DSM IP ASSETS B.V. · NL

Inventors

Wolfgang Holderich · Bischofswerda, DE
Verena Ritzerfeld · Aachen, DE
Bernhard Markus Ernst Russbüldt · St. Blasien, DE
Erhard Henning Fleischhauer · Aachen, DE
Werner Bonrath · Kaiseraugst, CH
Reinhard Karge · Staufen, DE
Jan Schütz · Bad Kötzting, DE

Key dates

Filing date	Jul 19, 2011
Grant date	Dec 30, 2014
Priority date	—
Expiry date	Sep 2, 2031

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/584
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

Use of pure lanthanum oxide which is obtained by calcination of oxygen-containing lanthanum salts at temperatures of at least 700° C. as heterogeneous catalyst in the aldol condensation of citral and acetone to give pseudoionone, and process for the preparation of pseudoionone by aldol condensation of citral and acetone in the liquid phase using pure lanthanum oxide.

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