Patent · US Expired

Method for the production of (meth)acrylic acid esters

US6177590A · kind A · utility

0Cited by

4References

13Claims

0Family size

Assignee

BASF SE

Inventors

Heinrich Aichinger · Mannheim, DE
Michael Fried · Heidelberg, DE
Gerhard Nestler · Ludwigshafen, DE
Albrecht Dams · Monsheim, DE

Key dates

Filing date	May 25, 1999
Grant date	Jan 23, 2001
Priority date	—
Expiry date	May 25, 2019

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P20/584
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

A process is described for preparing (meth)acrylic esters by reacting (meth)acrylic acid with C.sub.4 -C.sub.12 -alkanols in the presence of sulfuric acid or a mono-C.sub.4 -C.sub.12 -alkyl sulfate as catalyst, where the catalyst is regenerated by extraction with water from the reaction mixture and the aqueous catalyst solution is recycled back to the esterification, the concentration of unreacted alkanol in the reaction mixture to be extracted being not more than 5% by weight, based on the reaction mixture to be extracted.

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