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. 21, 2003
Filed:
Nov. 10, 2000
Matti Jussila, Fin-06400 Porvoo, FI;
Toivo Kärnä, Fin-06400 Porvoo, FI;
Jukka Koskinen, Fin-02160 Espoo, FI;
Ilkka Turunen, Fin-53100 Lappeenranta, FI;
Samuli Puhakka, Fin-53850 Lappeenranta, FI;
Other;
Abstract
In a method for preparing polyaniline, aniline is polymerized in a reactor in a polymerization medium containing aniline and oxidant. The polymerization is performed in a reactor in which the ratio of the heat transfer surface to the reaction volume is at least 10/m, preferably at least 20/m. In the apparatus, the polymerization is performed in a tubular reactor by allowing a medium containing aniline and oxidant to flow in a mixed flow through the tubular reactor. The tubular reactor is equipped with static mixers, and there can be several tubular reactors in parallel.