Patent · US Active

Method for producing acetoacetic acid arylamides

US8030519B2 · kind B2 · utility

0Cited by

2References

18Claims

0Family size

Assignee

LONZA LTD · CH

Inventors

Erich Armbruster · Naters, CH
Thuy Quach · Glis, CH
Günther Rosenthal · Brig, CH
Brian Schwegler · Leverkusen, DE

Key dates

Filing date	Apr 12, 2006
Grant date	Oct 4, 2011
Priority date	—
Expiry date	Oct 25, 2027

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/10
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Acetoacetic acid arylamides are continuously produced from diketene and primary or secondary aromatic amines under the conditions of a reactive distillation in the presence of water. The continuous method provides a high purity of the products, nearly quantitative yields and a high rate of throughput.

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