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:
Jul. 31, 2012
Filed:
May. 01, 2008
Imre Kordas, Veszprem, HU;
Heiko H. Humbert, Hamburg, DE;
Gabor Felber, Veszprem, HU;
Attila Gaspar, Petfurdo, HU;
Robert A. Grigsby, Jr., Spring, TX (US);
Petra E. Vanderstraeten, Leuven, BE;
Imre Kordas, Veszprem, HU;
Heiko H. Humbert, Hamburg, DE;
Gabor Felber, Veszprem, HU;
Attila Gaspar, Petfurdo, HU;
Robert A. Grigsby, Jr., Spring, TX (US);
Petra E. Vanderstraeten, Leuven, BE;
Huntsman International LLC, The Woodlands, TX (US);
Abstract
The present invention relates to a method for recovering N,N,N'-trimethylbisaminoethylether from a mixture with its amide and a method for separating N,N,N′-trimethylbisaminoethylether from mixtures comprising tertiary amines or tertiary aminoalkylether as well as a composition comprising a mixture of N,N,N′-trimethylbisaminoethylether and a transamidation agent.