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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 6437173 B1

PDFFull Text
Date of Patent:
Aug. 20, 2002

Filed:

Apr. 21, 1999

Process for the continuous manufacturing of dialkylaminoalkyl (meth) acrylates having a critical order of steps

Applicant:
Inventors:

Patrice Hurtel, Bernay, FR;

Charles Hazan, Paris, FR;

Norbert Richard, Le Montat, FR;

Assignee:

Elf Atochem S.A., , FR;

Attorney:

Millen, White, Zelano & Branigan, P.C.

Primary Examiner:

Johann Richter

Assistant Examiner:

Robert W Deemie

Int. Cl.
CPC ...
C07C 6/703 ;
U.S. Cl.
CPC ...
C07C 6/703 ;
Abstract

The present invention relates to the manufacture of a dialkylaminoalkyl (meth)acrylate by transesterification of methyl or ethyl (meth)acrylate with an amino alcohol. The transesterification catalyst is chosen from tetrabutyl, tetraethyl and tetra(2-ethylhexyl) titanates. The reaction is carried out in a stirred reactor at 90-120° C., after which the crude reaction mixture is sent to a tailing column (C ), the flow from the top of this column is sent to a topping column (C ) and the flow from the bottom of this column si then sent to a final rectification column (C ). A dialkylaminoalkyl (meth)acrylate of high purity is obtained in this way.

Find Patent Forward Citations

Hurtel, Patrice. (2002). Process for the continuous manufacturing of dialkylaminoalkyl (meth) acrylates having a critical order of steps (U.S. Patent No. 6437173). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6437173

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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