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. 31, 2006
Filed:
Dec. 16, 2002
Applicants:
Claus-peter Reisinger, Wixom, MI (US);
Sven Michael Hansen, Leverkusen, DE;
Peter Fischer, Köln, DE;
Inventors:
Claus-Peter Reisinger, Wixom, MI (US);
Sven Michael Hansen, Leverkusen, DE;
Peter Fischer, Köln, DE;
Assignee:
Bayer Aktiengesellschaft, Leverkusen, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C07C 211/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The preparation of quaternary salt phenolate solutions is disclosed. The preparation entails mixing an aqueous hydroxide-containing solution with an organic phase that contains phenol and quaternary salt, distilling off the water and precipitating and filtering off the resulting salt.