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:
Sep. 17, 2024
Filed:
Apr. 12, 2018
Applicant:
Snf Group, Andrezieux Boutheon, FR;
Inventors:
Cédrick Favero, Andrezieux Boutheon, FR;
Johann Kieffer, Andrezieux Boutheon, FR;
Jing Ling, Taixing, CN;
Assignee:
SNF GROUP, Andrezieux Boutheon, FR;
Primary Examiner:
Int. Cl.
CPC ...
C08F 220/34 (2006.01); C07C 213/08 (2006.01); C07C 213/10 (2006.01); C07C 219/08 (2006.01);
U.S. Cl.
CPC ...
C08F 220/34 (2013.01); C07C 213/08 (2013.01); C07C 213/10 (2013.01); C07C 219/08 (2013.01);
Abstract
Process for the production of 2-dimethylaminoethyl (meth)acrylate in multiple stage batch reactions involving the recycling of the catalyst (DBTO) in subsequent reaction, the addition a certain amount of fresh catalyst to the recycled catalyst, the use of said catalysts in the subsequent reaction, and wherein the volume decrease due to azeotropic distillation is compensate in order to keep the volume constant in the reactor during the reaction by the continuous addition of a composition comprising methyl(meth)acrylate and dimethylaminoethanol.