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. 06, 2004
Filed:
Dec. 29, 1999
Applicant:
Inventors:
Louis Renbaum, Richmond Hill, GA (US);
Mark S. Solomon, Humble, TX (US);
William D. Tippins, League City, TX (US);
Assignee:
Bayer Polymers LLC, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C08G 1/800 ; H01M 4/88 ; C07C / ; C07C / ;
U.S. Cl.
CPC ...
C08G 1/800 ; H01M 4/88 ; C07C / ; C07C / ;
Abstract
Disclosed herein is a process for preparing a reaction product containing methylene diphenylamine, comprising reacting aniline and formaldehyde in the presence of an acid catalyst wherein the acid level of the resulting reaction mixture is reduced during digestion of the reaction mixture.