Patent · US Expired

Preparation of (meth)acrylic acid

US7019169B2 · kind B2 · utility

3Cited by

20References

18Claims

0Family size

Assignee

BASF SE

Inventors

Frieder Borgmeier · Mannheim, DE
Frank Rosowski · Mannheim, DE
Hans-Gunther Lintz · Karlsruhe, DE
Ina Grisstede · Mannheim, DE

Key dates

Filing date	Sep 7, 2004
Grant date	Mar 28, 2006
Priority date	—
Expiry date	Sep 7, 2024

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C51/215
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process for preparing (meth)acrylic acid by conducting a saturated hydrocarbon precursor compound through a catalyst bed I whose catalysts I have, as the active composition, a multimetal oxide I which has a specific X-ray diffractogram and contains the elements Mo and V, at least one of the elements Te and Sb, and also at least one of the elements from the group consisting of Nb, Ta, W, Ce and Ti, wherein the catalyst bed I is interrupted by at least one catalyst bed II whose catalysts II have, as the active composition, a multimetal oxide II which contains the elements Mo, Bi and Fe.

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