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.:
Date of Patent:
Aug. 20, 2002
Filed:
Apr. 21, 1999
Applicant:
Inventors:
Assignee:
Elf Atochem S.A., , FR;
Primary Examiner:
Assistant Examiner:
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.