Patent · US Active

Control of a process for the purification of (meth)acrylic acid using on-line, near IR analysis

US9745244B2 · kind B2 · utility

1Cited by

7References

3Claims

0Family size

Assignee

Arkeme Inc. · US

Inventors

Timothy D. Ligon · St. Albans, US
Olan S. Fruchey · Port Aransas, US
Christopher T. Reeves · Hurricane, US
Fungau Ho · Charleston, US
Roger L. Roundy · Hurricane, US
William G. Etzkorn · Cross Lanes, US
Mahmood N. A. Jawaid · Cross Lanes, US
Patrick M. Wiegand · South Charleston, US

Key dates

Filing date	Sep 18, 2009
Grant date	Aug 29, 2017
Priority date	—
Expiry date	Apr 21, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C57/04
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

An improved process for the manufacture of technical grade (meth)acrylic acid, e.g., acrylic acid, the process comprising producing a hydrated reaction product from the gas-phase oxidation of at least one (meth)acrylic acid precursor, e.g., propylene, followed by first dehydrating and then concentrating the reaction product, the improvement comprising controlling at least one of the water, acetic acid and (meth)acrylic acid content of the reaction product during the purification of the reaction product using on-line, near IR spectroscopy.

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