Patent · US Active

Process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical

US7745658B2 · kind B2 · utility

2Cited by

1References

20Claims

0Family size

Assignee

BASF SE

Inventors

Gunter Lipowsky · Ladenburg, DE
Joachim Wulff-Doering · Bischofswerda, DE
Peter Zurowski · Landau, DE
Juergen Strasser · Neuss, DE

Key dates

Filing date	Jul 7, 2008
Grant date	Jun 29, 2010
Priority date	—
Expiry date	Jul 9, 2028

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07C67/62
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The present invention relates to a process for preparing tertiary alkyl esters of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical. The process includes reacting (meth)acrylic acid with at least one olefin of formula (I) in homogeneous phase in the presence of an acidic catalyst in a reactor, discharging the resulting reaction mixture from the reactor, separating the discharged reaction mixture into a first mixture which contains the catalyst and a second mixture which contains the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical, and removing the tertiary alkyl ester of (meth)acrylic acid having at least 4 carbon atoms in the alkyl radical from the second mixture in the presence of compound S, which comprises at least one N-oxyl group and is added as a stabilizer.

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