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:
Oct. 28, 2014
Filed:
Nov. 26, 2009
Christopher John Mitchell, Everberg, BE;
Avelino Corma Canos, Valencia, ES;
Robert Henry Carr, Bertem, BE;
Pablo Botella Asuncion, Valencia, ES;
Christopher John Mitchell, Everberg, BE;
Avelino Corma Canos, Valencia, ES;
Robert Henry Carr, Bertem, BE;
Pablo Botella Asuncion, Valencia, ES;
Huntsman International LLC, The Woodlands, TX (US);
Abstract
A process for providing methylene-bridged polyphenyl polyamines from aniline and formaldehyde according to the invention comprises the subsequent steps of a) condensing aniline and formaldehyde; b) reacting, in a first catalytic reaction step, said condensate over a solid catalyst, whereby an intermediate mixture is provided; c) converting, in a subsequent catalytic reaction step, said intermediate mixture into methylene-bridged polyphenyl polyamines in presence of a subsequent solid catalyst, thereby providing said methylene-bridged polyphenyl polyamines.