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. 11, 2006
Filed:
Jan. 29, 2004
Jürgen Ciprian, Ludwigshafen, DE;
Matthias Frauenkron, Freinsheim, DE;
Stephan Maurer, Böhl-Iggelheim, DE;
Johann-peter Melder, Böhl-Iggelheim, DE;
Jürgen Ciprian, Ludwigshafen, DE;
Matthias Frauenkron, Freinsheim, DE;
Stephan Maurer, Böhl-Iggelheim, DE;
Johann-Peter Melder, Böhl-Iggelheim, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
The present invention relates to a process for preparing TEDA solutions comprising a solvent selected from the group consisting of polyhydric alcohols and ethers of polyhydric alcohols. The process comprises passing gaseous TEDA into the solvent and subsequently treating the solutions with one or more suitable adsorbents. This gives solutions which have only low color numbers and are color-stable on storage. The solutions can be used as such in preferred applications of TEDA, preferably polyurethane production.