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:
Jan. 03, 2006
Filed:
Mar. 19, 2004
Applicants:
Peter Lappe, Dinslaken, DE;
Helmut Springer, Dinslaken, DE;
Inventors:
Peter Lappe, Dinslaken, DE;
Helmut Springer, Dinslaken, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 209/28 (2006.01); C07C 211/35 (2006.01); C07C 211/08 (2006.01); C07C 211/21 (2006.01); C07C 211/27 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a process for preparing N-methyldialkyl-amines by reacting secondary dialkylamines with formaldehyde at a temperature of from 100 to 200° C., by using from 1.5 to 3 mol of formaldehyde per mole of secondary dialkylamine and degassing the resulting reaction product, removing the aqueous phase and distilling the organic phase.